Patent US5619212A successfully refreshed from Google Patents.
US5619212A
Expired / Lapsed
US
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System for determining position from suppressed carrier radio waves
Assignee: Western Atlas International Inc
•
Filing: 1995-10-13
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Granted: 1997-04-08
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Expires: 2015-10-13
Abstract
Abstract Method and system for determining position from suppressed carrier signals transmitted by satellites in which a digital representation of the satellite signals is sampled and distributed for simultaneous measurement in synchronous parallel circuits. The phases of suppressed carriers implicit in the signals are combined in a time series of measurements with phase data from a second receiver to determine position.
Inventors
- 👤 Charles C. Counselman, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:45
CPC Classifications
G; G01; G01S; G01S19/00; G01S19/01; G01S19/13; G01S19/35; G01S19/37; G01C; G01C15/00; G01S19/21; G01S19/24; G01S19/29; G01S19/36; G01S19/38; G01S19/39; G01S19/42; G01S19/43; G01S19/44
Claims Analysis
Total Claims: 142
Claim 1
Independent Claim
81 words
A method of determining position information from orbiting satellites, comprising the steps of: forming a digital representation of a composite of overlapping spread spectrum signals received at a first position from a plurality of orbiting satellites; distributing said digital representation to a plurality of parallel circuits operating synchronously in response to a common clock; and observing each of a plurality of satellite specific signals in a different one of said parallel circuits to determine position information related to said first position.
Claim 2
Independent Claim
81 words
A method of determining position information from orbiting satellites, comprising the steps of: forming a digital representation of a composite of overlapping spread spectrum signals received at a first position from a plurality of orbiting satellites; distributing said digital representation to a plurality of parallel circuits operating synchronously in response to a common clock; and observing each of a plurality of satellite specific signals in a different one of said parallel circuits to determine position information related to said first position.
Claim 3
Dependent Claim
48 words
The invention of claim 1, wherein the step of observing each of a plurality of satellite specific signals in a different one of said plurality of parallel circuits further comprises the step of: substantially simultaneously measuring said plurality of satellite specific signals in response to said common clock.
Claim 4
Dependent Claim
69 words
The invention of claims 1 or 2, wherein the step of observing each of a plurality of satellite specific signals in a different one of said plurality of parallel circuits further comprises the steps of: deriving data from spread spectrum signals received at a second position from said plurality of orbiting satellites; and computing said position information from observing said plurality of satellite specific signals and from said data.
Claim 5
Dependent Claim
46 words
The invention of claim 3, wherein the step of observing each of a plurality of satellite specific signals in a different one of said plurality of parallel circuits further comprises the step of: substantially simultaneously observing said plurality of satellite specific signals and deriving said data.
Claim 6
Dependent Claim
40 words
The invention of claim 3, wherein the step of observing each of a plurality of satellite specific signals in a different one of said parallel circuits further comprises the step of: deriving said position information relative to said second position.
Claim 7
Dependent Claim
53 words
The invention of claim 3, wherein the step of observing each of a plurality of satellite specific signals in a different one of said parallel circuits further comprises the step of: deriving phase data related to the phase of a suppressed carrier signal implicit in each of said plurality of satellite specific signals.
Claim 8
Dependent Claim
23 words
The invention of claim 6, wherein the step of deriving phase data further comprises: processing said phase data to determine said position information.
Claim 9
Dependent Claim
23 words
The invention of claim 7, wherein the step of processing said phase data further comprises: resolving integer cycle ambiguity in said phase data.
Claim 10
Dependent Claim
23 words
The invention of claim 7, wherein the step of processing said phase data further comprises: resolving integer cycle ambiguity in said position information.
Claim 11
Dependent Claim
35 words
The invention of claim 6, wherein the step of deriving phase data further comprises: processing said phase data to reduce errors in said position information caused by scattering or reflections of said spread spectrum signals.
Claim 12
Dependent Claim
62 words
The invention of claim 6, wherein the step of observing each of a plurality of satellite specific signals in a different one of said parallel circuits further comprises the step of: measuring said plurality of satellite specific signals at a series of times to form a time series of measurements; and combining said time series of measurements to determine said position information.
Claim 13
Dependent Claim
49 words
The invention of claim 11, wherein the step of measuring said plurality of satellite specific signals at a series of times further comprises the step of: combining measurements of said plurality of satellite specific signals at each of said series of times to form said time series of measurements.
Claim 14
Dependent Claim
48 words
The invention of claim 11, wherein the step of distributing said digital representation to a plurality of parallel circuits further comprises the steps of: deriving a sample related to said composite of overlapping spread spectrum signals; and applying said sample to each of said plurality of parallel circuits.
Claim 15
Dependent Claim
14 words
The invention of claim 13 wherein said sample is derived from said digital representation.
Claim 16
Dependent Claim
47 words
The invention of claim 6, wherein the step of distributing said digital representation to a plurality of parallel circuits further comprises the steps of: deriving a sample related to said composite of spread spectrum signals; and applying said sample to each of said plurality of parallel circuits.
Claim 17
Dependent Claim
14 words
The invention of claim 15, wherein said sample is derived from said digital representation.
Claim 18
Dependent Claim
62 words
The invention of claim 3, wherein the step of observing each of a plurality of satellite specific signals in a different one of said parallel circuits further comprises the step of: measuring said plurality of satellite specific signals at a series of times to form a time series of measurements; and combining said time series of measurements to determine said position information.
Claim 19
Dependent Claim
49 words
The invention of claim 17, wherein the step of measuring said plurality of satellite specific signals at a series of times further comprises the step of: combining measurements of said plurality of satellite specific signals at each of said series of times to form said time series of measurements.
Claim 20
Dependent Claim
47 words
The invention of claim 17, wherein the step of distributing said digital representation to a plurality of parallel circuits further comprises the steps of: deriving a sample related to said composite of spread spectrum signals; and applying said sample to each of said plurality of parallel circuits.
Claim 21
Dependent Claim
14 words
The invention of claim 19 wherein said sample is derived from said digital representation.
Claim 22
Dependent Claim
45 words
The invention of claim 3, wherein the step of distributing said digital representation to a plurality of parallel circuits further comprises the steps of: deriving a sample related to said spread spectrum signals; and applying said sample to each of said plurality of parallel circuits.
Claim 23
Dependent Claim
14 words
The invention of claim 21 wherein said sample is derived from said digital representation.
Claim 24
Dependent Claim
55 words
The invention of claims 1 or 2, wherein the step of observing each of a plurality of satellite specific signals in a different one of said parallel circuits further comprises the step of: deriving phase data related to the phase of a suppressed carrier signal implicit in each of said plurality of satellite specific signals.
Claim 25
Dependent Claim
23 words
The invention of claim 23, wherein the step of deriving phase data further comprises: processing said phase data to determine said position information.
Claim 26
Dependent Claim
23 words
The invention of claim 24, wherein the step of processing said phase data further comprises: resolving integer cycle ambiguity in said phase data.
Claim 27
Dependent Claim
23 words
The invention of claim 24, wherein the step of processing said phase data further comprises: resolving integer cycle ambiguity in said position information.
Claim 28
Dependent Claim
35 words
The invention of claim 23, wherein the step of deriving phase data further comprises: processing said phase data to reduce errors in said position information caused by scattering or reflections of said spread spectrum signals.
Claim 29
Dependent Claim
59 words
The invention of claim 23, wherein the step of observing each of a plurality of satellite specific signals in a different one of said parallel circuits further comprises: measuring said plurality of satellite specific signals at a series of times to form a time series of measurements; and combining said time series of measurements to determine said position information.
Claim 30
Dependent Claim
46 words
The invention of claim 28, wherein the step of measuring said plurality of satellite specific signals at a series of times further comprises: combining measurements of said plurality of satellite specific signals at each of said series of times to form said time series of measurements.
Claim 31
Dependent Claim
45 words
The invention of claim 28, wherein the step of distributing said digital representation to a plurality of parallel circuits further comprises the steps of: deriving a sample related to said spread spectrum signals; and applying said sample to each of said plurality of parallel circuits.
Claim 32
Dependent Claim
14 words
The invention of claim 30 wherein said sample is derived from said digital representation.
Claim 33
Dependent Claim
45 words
The invention of claim 23, wherein the step of distributing said digital representation to a plurality of parallel circuits further comprises the steps of: deriving a sample related to said spread spectrum signals; and applying said sample to each of said plurality of parallel circuits.
Claim 34
Dependent Claim
14 words
The invention of claim 32 wherein said sample is derived from said digital representation.
Claim 35
Dependent Claim
61 words
The invention of claims 1 or 2, wherein the step of observing each of a plurality of satellite specific signals in a different one of said parallel circuits further comprises: measuring said plurality of satellite specific signals at a series of times to form a time series of measurements; and combining said time series of measurements to determine said position information.
Claim 36
Dependent Claim
46 words
The invention of claim 34, wherein the step of measuring said plurality of satellite specific signals at a series of times further comprises: combining measurements of said plurality of satellite specific signals at each of said series of times to form said time series of measurements.
Claim 37
Dependent Claim
45 words
The invention of claim 34, wherein the step of distributing said digital representation to a plurality of parallel circuits further comprises the steps of: deriving a sample related to said spread spectrum signals; and applying said sample to each of said plurality of parallel circuits.
Claim 38
Dependent Claim
14 words
The invention of claim 36 wherein said sample is derived from said digital representation.
Claim 39
Dependent Claim
47 words
The invention of claims 1 or 2, wherein the step of distributing said digital representation to a plurality of parallel circuits further comprises the steps of: deriving a sample related to said spread spectrum signals; and applying said sample to each of said plurality of parallel circuits.
Claim 40
Dependent Claim
14 words
The invention of claim 38 wherein said sample is derived from said digital representation.
Claim 41
Independent Claim
77 words
A system for determining position information comprising: an analog to digital converter responsive to a composite of overlapping spread spectrum signals received at a first position from a plurality of earth orbiting satellites for forming a digital representation of said composite; and a plurality of parallel circuits for determining position information related to said first position from said digital representation, each of said parallel circuits observing a satellite specific signal from a different one of said satellites.
Claim 42
Independent Claim
77 words
A system for determining position information comprising: an analog to digital converter responsive to a composite of overlapping spread spectrum signals received at a first position from a plurality of earth orbiting satellites for forming a digital representation of said composite; and a plurality of parallel circuits for determining position information related to said first position from said digital representation, each of said parallel circuits observing a satellite specific signal from a different one of said satellites.
Claim 43
Dependent Claim
37 words
The invention of claim 40, wherein said plurality of parallel circuits further comprise: a plurality of satellite specific registers for substantially simultaneously measuring each of said satellite specific signals in a different one of said parallel circuits.
Claim 44
Dependent Claim
46 words
The invention of claims 40 or 41, further comprising: a receiver responsive to spread spectrum signals received at a second position from said plurality of satellites; and a computer responsive to said receiver and associated with said plurality of parallel circuits to determine said position information.
Claim 45
Dependent Claim
32 words
The invention of claim 42, wherein said receiver further comprises: receiver circuits for observing the spread spectrum signals at the second position substantially simultaneously with the observing of said satellite specific signals.
Claim 46
Dependent Claim
16 words
The invention of claim 42, wherein said position information is determined relative to said second position.
Claim 47
Dependent Claim
27 words
The invention of claim 42, wherein said plurality of parallel circuits derive phase data related to the phases of suppressed carriers implicit in said satellite specific signals.
Claim 48
Dependent Claim
17 words
The invention of claim 45, wherein said computer processes said phase data to determine said position information.
Claim 49
Dependent Claim
21 words
The invention of claim 46, wherein said computer processes said phase data to resolve integer cycle ambiguity in said phase data.
Claim 50
Dependent Claim
21 words
The invention of claim 46, wherein said computer processes said phase data to resolve integer cycle ambiguity in said position information.
Claim 51
Dependent Claim
28 words
The invention of claim 45, wherein said computer processes said phase data to reduce errors in said position information from scattering or reflections of said spread spectrum signals.
Claim 52
Dependent Claim
22 words
The invention of claim 45, wherein said computer combines phase data derived at a series of different times to determine position information.
Claim 53
Dependent Claim
32 words
The invention of claim 50, wherein said computer combines phase data from each of said satellite specific signals to form each of said phase data derived at said series of different times.
Claim 54
Dependent Claim
30 words
The invention of claim 50, further comprising: a sampler for applying a sample related to said composite of overlapping spread spectrum signals to each of said plurality of parallel circuits.
Claim 55
Dependent Claim
15 words
The invention of claim 52 wherein said sample is a sample of said digital representation.
Claim 56
Dependent Claim
30 words
The invention of claim 45, further comprising: a sampler for applying a sample related to said composite of overlapping spread spectrum signals to each of said plurality of parallel circuits.
Claim 57
Dependent Claim
15 words
The invention of claim 54 wherein said sample is a sample of said digital representation.
Claim 58
Dependent Claim
26 words
The invention of claim 42, wherein said computer combines observations of said satellite specific signals derived at a series of different times to determine position information.
Claim 59
Dependent Claim
38 words
The invention of claim 56, wherein said computer combines observations of said satellite specific signals from all of said parallel circuits to form each of said observations of satellite specific signals derived at said series of different times.
Claim 60
Dependent Claim
30 words
The invention of claim 56, further comprising: a sampler for applying a sample related to said composite of overlapping spread spectrum signals to each of said plurality of parallel circuits.
Claim 61
Dependent Claim
15 words
The invention of claim 58 wherein said sample is a sample of said digital representation.
Claim 62
Dependent Claim
30 words
The invention of claim 42, further comprising: a sampler for applying a sample related to said composite of overlapping spread spectrum signals to each of said plurality of parallel circuits.
Claim 63
Dependent Claim
15 words
The invention of claim 60 wherein said sample is a sample of said digital representation.
Claim 64
Dependent Claim
29 words
The invention of claims 40 or 41, wherein said plurality of parallel circuits derive phase data related to the phases of suppressed carriers implicit in said satellite specific signals.
Claim 65
Dependent Claim
26 words
The invention of claim 62, further comprising: a computer associated with said plurality of parallel circuits for processing said phase data to determine said position information.
Claim 66
Dependent Claim
21 words
The invention of claim 63, wherein said computer processes said phase data to resolve integer cycle ambiguity in said phase data.
Claim 67
Dependent Claim
21 words
The invention of claim 63, wherein said computer processes said phase data to resolve integer cycle ambiguity in said position information.
Claim 68
Dependent Claim
28 words
The invention of claim 63, wherein said computer processes said phase data to reduce errors in said position information from scattering or reflections of said spread spectrum signals.
Claim 69
Dependent Claim
32 words
The invention of claim 62, further comprising: a computer associated with said plurality of parallel circuits for combining phase data derived at a series of different times to determine said position information.
Claim 70
Dependent Claim
31 words
The invention of claim 67, wherein said computer combines observations of each of said satellite specific signals to form each of said phase data derived at said series of different times.
Claim 71
Dependent Claim
30 words
The invention of claim 67, further comprising: a sampler for applying a sample related to said composite of overlapping spread spectrum signals to each of said plurality of parallel circuits.
Claim 72
Dependent Claim
15 words
The invention of claim 69 wherein said sample is a sample of said digital representation.
Claim 73
Dependent Claim
30 words
The invention of claim 62, further comprising: a sampler for applying a sample related to said composite of overlapping spread spectrum signals to each of said plurality of parallel circuits.
Claim 74
Dependent Claim
15 words
The invention of claim 71 wherein said sample is a sample of said digital representation.
Claim 75
Dependent Claim
36 words
The invention of claims 40 or 41, further comprising: a computer associated with said plurality of parallel circuits for combining observations of satellite specific signals derived at a series of different times to determine position information.
Claim 76
Dependent Claim
37 words
The invention of claim 73, wherein said computer combines observations of satellite specific signals from each of said parallel circuits to form each of said observations of satellite specific signals derived at said series of different times.
Claim 77
Dependent Claim
30 words
The invention of claim 73, further comprising: a sampler for applying a sample related to said composite of overlapping spread spectrum signals to each of said plurality of parallel circuits.
Claim 78
Dependent Claim
15 words
The invention of claim 75 wherein said sample is a sample of said digital representation.
Claim 79
Dependent Claim
32 words
The invention of claims 40 or 41, further comprising: a sampler for applying a sample related to said composite of overlapping spread spectrum signals to each of said plurality of parallel circuits.
Claim 80
Dependent Claim
15 words
The invention of claim 75 wherein said sample is a sample of said digital representation.
Claim 81
Independent Claim
84 words
A system for determining position information from orbiting satellites, comprising: means for forming a digital representation of a composite of overlapping spread spectrum signals received at a first position from a plurality of orbiting satellites; means for distributing said digital representation to a plurality of parallel circuits operating synchronously in response to a common clock; and means for observing each of a plurality of satellite specific signals in a different one of said parallel circuits to determine position information related to said first position.
Claim 82
Independent Claim
84 words
A system for determining position information from orbiting satellites, comprising: means for forming a digital representation of a composite of overlapping spread spectrum signals received at a first position from a plurality of orbiting satellites; means for distributing said digital representation to a plurality of parallel circuits operating synchronously in response to a common clock; and means for observing each of a plurality of satellite specific signals in a different one of said parallel circuits to determine position information related to said first position.
Claim 83
Dependent Claim
47 words
The invention of claim 79, wherein the means for observing each of a plurality of satellite specific signals in a different one of said plurality of parallel circuits further comprises: means for substantially simultaneously measuring said plurality of satellite specific signals in response to said common clock.
Claim 84
Dependent Claim
70 words
The invention of claims 79 or 80, wherein the means for observing each of a plurality of satellite specific signals in a different one of said plurality of parallel circuits further comprises: means for deriving data from spread spectrum signals received at a second position from said plurality of orbiting satellites; and means for computing said position information from observing said plurality of satellite specific signals and from said data.
Claim 85
Dependent Claim
45 words
The invention of claim 81, wherein the means for observing each of a plurality of satellite specific signals in a different one of said plurality of parallel circuits further comprises: means for substantially simultaneously observing said plurality of satellite specific signals and deriving said data.
Claim 86
Dependent Claim
39 words
The invention of claim 81, wherein the means for observing each of a plurality of satellite specific signals in a different one of said parallel circuits further comprises: means for deriving said position information relative to said second position.
Claim 87
Dependent Claim
52 words
The invention of claim 81, wherein the means for observing each of a plurality of satellite specific signals in a different one of said parallel circuits further comprises: means for deriving phase data related to the phase of a suppressed carrier signal implicit in each of said plurality of satellite specific signals.
Claim 88
Dependent Claim
25 words
The invention of claim 84, wherein the means for deriving phase data further comprises: means for processing said phase data to determine said position information.
Claim 89
Dependent Claim
25 words
The invention of claim 85, wherein the means for processing said phase data further comprises: means for resolving integer cycle ambiguity in said phase data.
Claim 90
Dependent Claim
25 words
The invention of claim 85, wherein the means for processing said phase data further comprises: means for resolving integer cycle ambiguity in said position information.
Claim 91
Dependent Claim
38 words
The invention of claim 84, wherein the means for processing said phase data further comprises: means for processing said phase data to reduce errors in said position information caused by scattering or reflections of said spread spectrum signals.
Claim 92
Dependent Claim
63 words
The invention of claim 84, wherein the means for observing each of a plurality of satellite specific signals in a different one of said parallel circuits further comprises: means for measuring said plurality of satellite specific signals at a series of times to form a time series of measurements; and means for combining said time series of measurements to determine said position information.
Claim 93
Dependent Claim
48 words
The invention of claim 89, wherein the means for measuring said plurality of satellite specific signals at a series of times further comprises: means for combining measurements of said plurality of satellite specific signals at each of said series of times to form said time series of measurements.
Claim 94
Dependent Claim
43 words
The invention of claim 89, wherein the means for distributing said digital representation to a plurality of parallel circuits further comprises: means for applying a sample related to said composite of overlapping spread spectrum signals to each of said plurality of parallel circuits.
Claim 95
Dependent Claim
14 words
The invention of claim 91 wherein said sample is derived from said digital representation.
Claim 96
Dependent Claim
42 words
The invention of claim 84, wherein the means for distributing said digital representation to a plurality of parallel circuits further comprises: means for applying a sample related to said composite of spread spectrum signals to each of said plurality of parallel circuits.
Claim 97
Dependent Claim
14 words
The invention of claim 93, wherein said sample is derived from said digital representation.
Claim 98
Dependent Claim
63 words
The invention of claim 81, wherein the means for observing each of a plurality of satellite specific signals in a different one of said parallel circuits further comprises: means for measuring said plurality of satellite specific signals at a series of times to form a time series of measurements; and means for combining said time series of measurements to determine said position information.
Claim 99
Dependent Claim
48 words
The invention of claim 95, wherein the means for measuring said plurality of satellite specific signals at a series of times further comprises: means for combining measurements of said plurality of satellite specific signals at each of said series of times to form said time series of measurements.
Claim 100
Dependent Claim
42 words
The invention of claim 95, wherein the means for distributing said digital representation to a plurality of parallel circuits further comprises: means for applying a sample related to said composite of spread spectrum signals to each of said plurality of parallel circuits.
Claim 101
Dependent Claim
14 words
The invention of claim 97 wherein said sample is derived from said digital representation.
Claim 102
Dependent Claim
40 words
The invention of claim 81, wherein the means for distributing said digital representation to a plurality of parallel circuits further comprises: means for applying a sample related to said spread spectrum signals to each of said plurality of parallel circuits.
Claim 103
Dependent Claim
14 words
The invention of claim 99 wherein said sample is derived from said digital representation.
Claim 104
Dependent Claim
54 words
The invention of claims 79 or 80, wherein the means for observing each of a plurality of satellite specific signals in a different one of said parallel circuits further comprises: means for deriving phase data related to the phase of a suppressed carrier signal implicit in each of said plurality of satellite specific signals.
Claim 105
Dependent Claim
25 words
The invention of claim 101, wherein the means for deriving phase data further comprises: means for processing said phase data to determine said position information.
Claim 106
Dependent Claim
25 words
The invention of claim 102, wherein the means for processing said phase data further comprises: means for resolving integer cycle ambiguity in said phase data.
Claim 107
Dependent Claim
25 words
The invention of claim 102, wherein the means for processing said phase data further comprises: means for resolving integer cycle ambiguity in said position information.
Claim 108
Dependent Claim
38 words
The invention of claim 101, wherein the means for processing said phase data further comprises: means for processing said phase data to reduce errors in said position information caused by scattering or reflections of said spread spectrum signals.
Claim 109
Dependent Claim
63 words
The invention of claim 101, wherein the step of observing each of a plurality of satellite specific signals in a different one of said parallel circuits further comprises: means for measuring said plurality of satellite specific signals at a series of times to form a time series of measurements; and means for combining said time series of measurements to determine said position information.
Claim 110
Dependent Claim
48 words
The invention of claim 106, wherein the means for measuring said plurality of satellite specific signals at a series of times further comprises: means for combining measurements of said plurality of satellite specific signals at each of said series of times to form said time series of measurements.
Claim 111
Dependent Claim
43 words
The invention of claim 106, wherein the means for distributing said digital representation to a plurality of parallel circuits further comprises the steps of: means for applying a sample related to said spread spectrum signals to each of said plurality of parallel circuits.
Claim 112
Dependent Claim
14 words
The invention of claim 108 wherein said sample is derived from said digital representation.
Claim 113
Dependent Claim
43 words
The invention of claim 101, wherein the means for distributing said digital representation to a plurality of parallel circuits further comprises the steps of: means for applying a sample related to said spread spectrum signals to each of said plurality of parallel circuits.
Claim 114
Dependent Claim
14 words
The invention of claim 110 wherein said sample is derived from said digital representation.
Claim 115
Dependent Claim
65 words
The invention of claims 79 or 80, wherein the means for observing each of a plurality of satellite specific signals in a different one of said parallel circuits further comprises: means for measuring said plurality of satellite specific signals at a series of times to form a time series of measurements; and means for combining said time series of measurements to determine said position information.
Claim 116
Dependent Claim
48 words
The invention of claim 112, wherein the means for measuring said plurality of satellite specific signals at a series of times further comprises: means for combining measurements of said plurality of satellite specific signals at each of said series of times to form said time series of measurements.
Claim 117
Dependent Claim
43 words
The invention of claim 113, wherein the means for distributing said digital representation to a plurality of parallel circuits further comprises the steps of: means for applying a sample related to said spread spectrum signals to each of said plurality of parallel circuits.
Claim 118
Dependent Claim
14 words
The invention of claim 114 wherein said sample is derived from said digital representation.
Claim 119
Dependent Claim
45 words
The invention of claims 79 or 80, wherein the means for distributing said digital representation to a plurality of parallel circuits further comprises the steps of: means for applying a sample related to said spread spectrum signals to each of said plurality of parallel circuits.
Claim 120
Dependent Claim
14 words
The invention of claim 116 wherein said sample is derived from said digital representation.
Claim 121
Independent Claim
108 words
A method of determining receiver position information from a composite of spread spectrum signals received from a plurality of orbiting satellites, comprising the steps of: forming a digital representation of the composite of spread spectrum signals at a first receiver; applying said digital representation substantially simultaneously to a plurality of logic circuits operating synchronously in response to a common clock; substantially simultaneously measuring the signal received from each of said plurality of satellites in a separate one of said plurality of separate logic circuits to derive measurements of said signals with respect to a common reference signal; and determining receiver position information from a combination of said measurements.
Claim 122
Independent Claim
108 words
A method of determining receiver position information from a composite of spread spectrum signals received from a plurality of orbiting satellites, comprising the steps of: forming a digital representation of the composite of spread spectrum signals at a first receiver; applying said digital representation substantially simultaneously to a plurality of logic circuits operating synchronously in response to a common clock; substantially simultaneously measuring the signal received from each of said plurality of satellites in a separate one of said plurality of separate logic circuits to derive measurements of said signals with respect to a common reference signal; and determining receiver position information from a combination of said measurements.
Claim 123
Dependent Claim
19 words
The invention of claim 118, further comprising the step of: deriving said common reference signal from said common clock.
Claim 124
Dependent Claim
55 words
The invention of claim 118, wherein the step of substantially simultaneously measuring the signal received from each of said plurality of satellites further comprises the step of: deriving carrier phase data representing the phase of a suppressed carrier signal implicit in the signal received from each satellite in each of said plurality of logic circuits.
Claim 125
Dependent Claim
29 words
The invention of claim 120, wherein the step of determining receiver position information further comprises the step of: combining said carrier phase data to determine receiver position information therefrom.
Claim 126
Dependent Claim
55 words
The invention of claim 121, wherein the carrier phase data represent the phase of each said suppressed carrier relative to the common reference signal at a series of common times, and the step of combining said carrier phase data further comprises the step of: combining said carrier phase data from said series of common times.
Claim 127
Dependent Claim
23 words
The invention of claim 122, wherein said series of common times span an interval sufficient to reduce uncertainty in said receiver position information.
Claim 128
Dependent Claim
23 words
The invention of claim 122, wherein said series of common times span an interval sufficient to resolve ambiguity in said receiver position information.
Claim 129
Dependent Claim
61 words
The invention of claim 118, further comprising the step of: deriving measurements of signals received from the satellites at a second receiver; and wherein said step of determining receiver position information from a combination of said measurements further comprises the step of: combining measurements of signals received from the satellites at the first and second receivers to determine relative position information.
Claim 130
Dependent Claim
47 words
The invention of claim 118, wherein the step of forming a digital representation further comprises the steps of: sampling said composite of spread spectrum signals synchronously in response to said common clock to derive a series of samples to be applied to said plurality of logic circuits.
Claim 131
Dependent Claim
57 words
The invention of claim 118, wherein the step of applying said digital representation substantially simultaneously to a plurality of logic circuits further comprises the steps of: sampling said digital representation synchronously in response to said common clock to derive a series of samples; and thereafter applying said series of samples synchronously to said plurality of logic circuits.
Claim 132
Independent Claim
113 words
A system for determining receiver position information from a composite of spread spectrum signals received from a plurality of orbiting satellites, comprising: means for forming a digital representation of the composite of spread spectrum signals at a first receiver; means for applying said digital representation substantially simultaneously to a plurality of logic circuits operating synchronously in response to a common clock; means for substantially simultaneously measuring the signal received from each of said plurality of satellites in a separate one of said plurality of separate logic circuits to derive measurements of said signals with respect to a common reference signal; and means for determining receiver position information from a combination of said measurements.
Claim 133
Independent Claim
113 words
A system for determining receiver position information from a composite of spread spectrum signals received from a plurality of orbiting satellites, comprising: means for forming a digital representation of the composite of spread spectrum signals at a first receiver; means for applying said digital representation substantially simultaneously to a plurality of logic circuits operating synchronously in response to a common clock; means for substantially simultaneously measuring the signal received from each of said plurality of satellites in a separate one of said plurality of separate logic circuits to derive measurements of said signals with respect to a common reference signal; and means for determining receiver position information from a combination of said measurements.
Claim 134
Dependent Claim
18 words
The invention of claim 128, further comprising: means for deriving said common reference signal from said common clock.
Claim 135
Dependent Claim
54 words
The invention of claim 128, wherein the means for substantially simultaneously measuring the signal received from each of said plurality of satellites further comprises: means for deriving carrier phase data representing the phase of a suppressed carrier signal implicit in the signal received from each satellite in each of said plurality of logic circuits.
Claim 136
Dependent Claim
28 words
The invention of claim 130, wherein the means for determining receiver position information further comprises: means for combining said carrier phase data to determine receiver position information therefrom.
Claim 137
Dependent Claim
54 words
The invention of claim 131, wherein the carrier phase data represent the phase of each said suppressed carrier relative to the common reference signal at a series of common times, and the means for combining said carrier phase data further comprises: means for combining said carrier phase data from said series of common times.
Claim 138
Dependent Claim
23 words
The invention of claim 132, wherein said series of common times span an interval sufficient to reduce uncertainty in said receiver position information.
Claim 139
Dependent Claim
23 words
The invention of claim 132, wherein said series of common times span an interval sufficient to resolve ambiguity in said receiver position information.
Claim 140
Dependent Claim
59 words
The invention of claim 128, further comprising: means for deriving measurements of signals received from the satellites at a second receiver; and wherein said means for determining receiver position information from a combination of said measurements further comprises: means for combining measurements of signals received from the satellites at the first and second receivers to determine relative position information.
Claim 141
Dependent Claim
46 words
The invention of claim 128, wherein the means for forming a digital representation further comprises: means for sampling said composite of spread spectrum signals synchronously in response to said common clock to derive a series of samples to be applied to said plurality of logic circuits.
Claim 142
Dependent Claim
58 words
The invention of claim 128, wherein the means for applying said digital representation substantially simultaneously to a plurality of logic circuits further comprises: means for sampling said digital representation synchronously in response to said common clock to derive a series of samples; and thereafter means for applying said series of samples synchronously to said plurality of logic circuits.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-04-07 | 2000-10-07 | 2001-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-07 | 2004-10-07 | 2005-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-07 | 2008-10-07 | 2009-04-08 | $7700.00 | Window Closed / Lapsed |