Patent US5019710A successfully refreshed from Google Patents.
US4067009A
Expired / Lapsed
US
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Beam focused synthetic aperture
Assignee: Individual
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Filing: 1975-08-01
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Granted: 1978-01-03
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Expires: 1995-08-01
Abstract
Abstract A beam focused synthetic aperture having a lens or antenna for receiving radiation in a receiving beam from an object of interest, a detector for receiving radiation from the lens or antenna, and an output and display circuit for using and viewing the detector output, with delay means internal or external to the lens or antenna and between the object and detector and for producing the matched spatial filtering of signals from objects crossing the receiving beam, and with the detector producing a pulse for each object crossing the receiving beam.
Inventors
- 👤 James Nickolas Constant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:52
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/44; G01S13/4409; G01S13/88; G01S13/89; G01S13/90; G01S13/9004; G01S13/9005
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
78 words
In a synthetic aperture having first means for forming a beam for receiving radiation from a target, a detector for a radiation beam from said first means, and an output and display for using and viewing detected signals from the detector, the improvement comprising: a delay means inserted between the target and the detector, said delay means including a spatial matched filter for said radiation from said target moving through the field of view of said radiation beam.
Claim 2
Dependent Claim
78 words
In a synthetic aperture having first means for forming a beam for receiving radiation from a target, a detector for a radiation beam from said first means, and an output and display for using and viewing detected signals from the detector, the improvement comprising: a delay means inserted between the target and the detector, said delay means including a spatial matched filter for said radiation from said target moving through the field of view of said radiation beam.
Claim 3
Dependent Claim
21 words
A synthetic aperture as defined in claim 1 including a transmitter for directing radiation to said target in said receiving beam.
Claim 4
Dependent Claim
18 words
A synthetic aperture as defined in claim 1 including a local oscillator for heterodyning signals in said detector.
Claim 5
Dependent Claim
17 words
A synthetic aperture as defined in claim 1 including a beamsplitter-recombiner in combination with said delay means.
Claim 6
Dependent Claim
58 words
A synthetic aperture as defined in claim 4 wherein said beamsplitter-recombiner includes means for splitting incoming radiation from said target into at least two beams along different paths, and means for recombining the outgoing radiation into a single beam, with the paths of different length providing a differential time delay in one separated beam relative to the other.
Claim 7
Dependent Claim
53 words
A synthetic aperture as defined in claim 4 wherein said beamsplitter-recombiner includes a beamsplitter and beam combiner with said beamsplitter directing an incoming beam along a first and along a second path to at least one mirror for reflection to said recombiner for recombining to form an outgoing beam along the first path.
Claim 8
Dependent Claim
50 words
The system of claim 4 wherein the beamsplitter includes at least one mirror and means for directing an incoming beam along a first path and along a second path to at least one mirror for reflection to the recombiner for recombining to form an outgoing beam along the first path.
Claim 9
Dependent Claim
39 words
A synthetic aperture as defined in claim 1 wherein said delay means includes a delay unit which provides said spatial matched filter and a beamsplitter-recombiner means which provides a cosine modulation of a beam passing through said delay means.
Claim 10
Dependent Claim
44 words
A synthetic aperture as defined in claim 1 in a system for identifying objects with a coded label, wherein said target crossing said receiving beam is a label attached to an object, and with a plurality of labels with a label for each object.
Claim 11
Dependent Claim
14 words
A system as defined in claim 9 wherein said label is a harmonic means.
Claim 12
Dependent Claim
18 words
A system as defined in claim 9 wherein the code of said coded label is a binary code.
Claim 13
Dependent Claim
62 words
A system as defined in claim 9 with each of said labels having a plurality of code element locations with code elements disposed at selected locations, with the presence and absence of code elements at code element locations comprising a code for the object, and with a code element comprising a zone having a radiation characteristic different from that of the background.
Claim 14
Dependent Claim
51 words
A system as defined in claim 12 wherein the spacing of code element locations of a label for a system operating at a particular wavelength and frequency is substantially proportional to the size of said lens or antenna along the path of relative motion of said synthetic aperture and label. pg,52
Claim 15
Dependent Claim
46 words
A system as defined in claim 12 wherein the spacing of code element locations of a label is substantially a linear dependence of the antenna size along the path of relative motion of said synthetic aperture and label and is substantially independent of wavelength and range.
Claim 16
Dependent Claim
14 words
A system as defined in claim 9 wherein said label is a non-harmonic means.
Claim 17
Dependent Claim
18 words
A system as defined in claim 9 wherein the code of said coded labels is a bar code.
Claim 18
Dependent Claim
18 words
A synthetic aperture as defined in claim 1 wherein said radiation from a target is an electromagnetic radiation.
Claim 19
Dependent Claim
21 words
A system as defined in claim 1 wherein said delay means is inserted in a location internal to said first means.
Claim 20
Dependent Claim
21 words
A system as defined in claim 1 wherein said delay means is inserted in a location external to said first means.
Claim 21
Dependent Claim
15 words
The system of claim 1 wherein said spatial matched filter is a non-dispersive delay line.
Claim 22
Dependent Claim
18 words
A synthetic aperture as defined in claim 1 wherein said radiation from a target is an acoustic radiation.
Claim 23
Dependent Claim
15 words
The system of claim 1 wherein said spatial matched filter is a dispersive delay line.
Claim 24
Independent Claim
50 words
A method of generating a synthetic aperture, comprising the steps of: generating an electromagnetic receiving beam; receiving unsynchronized spatial signals from targets crossing said receiving beam; synchronizing said unsynchronized signals in a spatial matched filter prior to their being detected; and detecting said synchronized spatial signals as impulsive electrical currents.
Claim 25
Independent Claim
50 words
A method of generating a synthetic aperture, comprising the steps of: generating an electromagnetic receiving beam; receiving unsynchronized spatial signals from targets crossing said receiving beam; synchronizing said unsynchronized signals in a spatial matched filter prior to their being detected; and detecting said synchronized spatial signals as impulsive electrical currents.
Claim 26
Dependent Claim
25 words
A method as defined in claim 23 including the step of: generating a transmitting beam for illuminating targets for reflecting signals to said receiving beam.
Claim 27
Dependent Claim
22 words
A method as defined in claim 23 including the step of: generating a local oscillator signal for heterodyning signals in said detector.
Claim 28
Dependent Claim
19 words
A method as defined in claim 23 including the step of: controlling the frequency-time characteristic of said matched filter.
Claim 29
Dependent Claim
30 words
A method as defined in claim 23 including the steps of: providing labels in the form of coded targets; and attaching labels to objects for identifying objects with a code.
Claim 30
Dependent Claim
14 words
A method as defined in claim 23 including the step of cosine modulating signals.
Claim 31
Dependent Claim
19 words
The method of claim 23 including the step of cosine modulating said unsynchronized signals prior to their being detected.
Claim 32
Dependent Claim
26 words
The method of claim 1 including the step of varying one of the frequency-time characteristics of said matched filter and differential time delay of said beamsplitter-recombiner.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |