US3579239A
Expired / Lapsed
US
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Angularly selective monopulse reception
Assignee: Lockheed Martin Corp
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Filing: 1965-07-13
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Granted: 1971-05-18
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Expires: 1985-07-13
Abstract
Abstract This invention relates to an angularly selective monopulse system for receiving desired pulse signals, having means for determining whether an incident pulse was received from within a desired angular range. If not so received, the pulse is rejected, but if it was so received, it is further processed and the information it provides is utilized for appropriately adjusting the center of the acceptance sector. This information may also be used for the physical steering of the vehicle or missile upon which it may be mounted.
Inventors
- 👤 William O Purcell Jr
- 👤 Walter D Trippe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:26
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/44; G01S13/4454; G01S13/66; G01S13/68; G01S13/685
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
68 words
In a monopulse receiver system: a sum signal channel, a sum and difference signal channel, comparator means for comparing the channel signal amplitudes, signal level control means responsive to the comparator means operative to equalize the channel signals, and signal rejection means operative to prevent response of the signal level control means to signals having a difference between sum and sum and difference levels outside a predetermined range.
Claim 2
Dependent Claim
68 words
In a monopulse receiver system: a sum signal channel, a sum and difference signal channel, comparator means for comparing the channel signal amplitudes, signal level control means responsive to the comparator means operative to equalize the channel signals, and signal rejection means operative to prevent response of the signal level control means to signals having a difference between sum and sum and difference levels outside a predetermined range.
Claim 3
Dependent Claim
25 words
The system of claim 1 wherein: the signal level control means comprises means for varying the sum component of the sum and difference channel signal.
Claim 4
Dependent Claim
40 words
The system of claim 1 wherein: the signal rejection means comprises further means responsive to the difference between the sum signal and a multiple of the absolute value of the difference between the sum and the sum and difference signals.
Claim 5
Dependent Claim
30 words
The system of claim 3 wherein: the comparator means comprises means supplying a signal characterizing the difference between the sum and sum and difference upon operation of the further means.
Claim 6
Dependent Claim
25 words
The system of claim 3 wherein: the comparator means comprises means supplying a signal characteristic of the sum signal upon operation of the further means.
Claim 7
Dependent Claim
96 words
An angularly selective monopulse system for receiving desired recurrent pulse signals comprising: a sum signal channel, a difference signal channel, summing means for combining the difference signal with a controlled fraction of the sum signal to provide a combined signal, means for rejecting said pulse signals when the sum signal is less than a multiple of the absolute value of the difference between the sum and combined signals, and means utilizing said pulse signals when the sum signal is greater than the multiple of the absolute value of the difference between the sum and combined signals.
Claim 8
Dependent Claim
96 words
An angularly selective monopulse system for receiving desired recurrent pulse signals comprising: a sum signal channel, a difference signal channel, summing means for combining the difference signal with a controlled fraction of the sum signal to provide a combined signal, means for rejecting said pulse signals when the sum signal is less than a multiple of the absolute value of the difference between the sum and combined signals, and means utilizing said pulse signals when the sum signal is greater than the multiple of the absolute value of the difference between the sum and combined signals.
Claim 9
Dependent Claim
70 words
The structure of claim 6 further comprising: means integrating signals characterizing the difference between the sum and combined signals when the sum signal is greater than the multiple of absolute value of the difference between the sum and combined signals, and control means for the summing means operating in dependency on the integrand to vary the controlled fraction of the sum signal to maintain angular selectivIty for said desired signals.
Claim 10
Dependent Claim
148 words
An angularly selective monopulse system for receiving desired recurrent pulse signals comprising: a sum signal channel, a difference signal channel, summing means for combining the difference signal with a controlled fraction of the sum signal to provide a combined signal, means for delaying the combined signal, means for sequentially feeding the sum and combined signal to a third channel, means for amplifying the third channel signal, means responsive to the amplified signals to supply a signal characterizing their difference D And a unipotential signal characterizing the absolute value of their difference D , comparator means operative to compare the sum signal to a predetermined multiple of the D signal, and means responsive to the comparator means for rejecting said pulse signals if the sum signal is less than the multiplied D signal to discriminate against pulses received outside an angular range from which the desired signals are incident.
Claim 11
Dependent Claim
148 words
An angularly selective monopulse system for receiving desired recurrent pulse signals comprising: a sum signal channel, a difference signal channel, summing means for combining the difference signal with a controlled fraction of the sum signal to provide a combined signal, means for delaying the combined signal, means for sequentially feeding the sum and combined signal to a third channel, means for amplifying the third channel signal, means responsive to the amplified signals to supply a signal characterizing their difference D And a unipotential signal characterizing the absolute value of their difference D , comparator means operative to compare the sum signal to a predetermined multiple of the D signal, and means responsive to the comparator means for rejecting said pulse signals if the sum signal is less than the multiplied D signal to discriminate against pulses received outside an angular range from which the desired signals are incident.
Claim 12
Dependent Claim
75 words
The system of claim 8 further including: integrator means, means responsive to the comparator means to transmit a signal characterizing the D Signal to the integrator if the sum signal is greater than the multiplied D signal, and means controlling the summing means responsive to the integrator output operative to vary the controlled fraction of the sum pulse signal to equalize the sum and combined pulse signals to maintain angular selectivity for said desired signals.
Claim 13
Dependent Claim
22 words
The system of claim 9 further including: automatic amplifier gain control means responsive to sum signals greater than the multiplied D signal.
Claim 14
Dependent Claim
19 words
The system of claim 9 further including: means for guiding the system operating in dependency on the integrator output.
Claim 15
Dependent Claim
255 words
An angularly selective monopulse system for receiving desired recurrent pulse signals comprising: a sum signal channel, a difference signal channel, summing means for combining the difference signal with a controlled fraction of the sum signal to provide a combined signal, means for delaying the combined signal, means for sequentially feeding the sum and combined signals to a third channel operating in dependency on the amplitude of the sum signal, means for amplifying the third channel signal, means for separately peak detecting two pulse signals, switch means for sequentially switching the amplified signals to the peak detector means, means for separately storing the peak detected voltages, means for sampling the stored voltages operative to supply a signal characterizing their difference D and a unipotential signal characterizing the absolute value of their difference D , comparator means operative to compare the sum signal to a predetermined multiple of the D signal, means responsive to the comparator means for rejecting said pulse signals if the sum signal is less than the multiplied D signal to discriminate against pulses received outside an angular range from which the desired signals are incident, integrator means, means responsive to the comparator means to transmit a signal characterizing the D signal to the integrator if the sum signal is greater than the multiplied D signal, and means controlling the summing means responsive to the integrator output operative to vary the controlled fraction of the sum pulse signal to equalize the sum and combined pulse signal to maintain angular selectivity for said desired signals.
Claim 16
Dependent Claim
255 words
An angularly selective monopulse system for receiving desired recurrent pulse signals comprising: a sum signal channel, a difference signal channel, summing means for combining the difference signal with a controlled fraction of the sum signal to provide a combined signal, means for delaying the combined signal, means for sequentially feeding the sum and combined signals to a third channel operating in dependency on the amplitude of the sum signal, means for amplifying the third channel signal, means for separately peak detecting two pulse signals, switch means for sequentially switching the amplified signals to the peak detector means, means for separately storing the peak detected voltages, means for sampling the stored voltages operative to supply a signal characterizing their difference D and a unipotential signal characterizing the absolute value of their difference D , comparator means operative to compare the sum signal to a predetermined multiple of the D signal, means responsive to the comparator means for rejecting said pulse signals if the sum signal is less than the multiplied D signal to discriminate against pulses received outside an angular range from which the desired signals are incident, integrator means, means responsive to the comparator means to transmit a signal characterizing the D signal to the integrator if the sum signal is greater than the multiplied D signal, and means controlling the summing means responsive to the integrator output operative to vary the controlled fraction of the sum pulse signal to equalize the sum and combined pulse signal to maintain angular selectivity for said desired signals.
Claim 17
Dependent Claim
263 words
An angularly selective monopulse system for receiving desired recurrent pulse signals comprising: a sum signal channel, a difference signal channel, means for phase shifting the difference signal, summing means for combining the phase shifted signal with a controlled fraction of the sum signal to provide a combined signal, meaNs for delaying the combined signal, means for sequentially feeding the sum and combined signals to a third channel operating in dependency on the amplitude of the sum signal, means for amplifying the third channel signal, means for separately peak detecting two pulse signals, switch means for sequentially switching the amplified signals to the peak detector means, means for separately storing the peak detected voltages, means for sampling the stored voltages operative to supply a signal characterizing their difference D and a unipotential signal characterizing the absolute value of their difference D , comparator means operative to compare the sum signal to a predetermined multiple of the D signal, means responsive to the comparator means for rejecting said pulse signals if the sum signal is less than the multiplied D signal to discriminate against pulses received outside an angular range from which the desired signals are incident, integrator means, means responsive to the comparator means to transmit a signal characterizing the D signal to the integrator if the sum signal is greater than the multiplied D signal, and means controlling the summing means responsive to the integrator output operative to vary the controlled fraction of the sum pulse signal to equalize the sum and combined pulse signals to maintain angular selectivity for said desired signals.
Claim 18
Dependent Claim
263 words
An angularly selective monopulse system for receiving desired recurrent pulse signals comprising: a sum signal channel, a difference signal channel, means for phase shifting the difference signal, summing means for combining the phase shifted signal with a controlled fraction of the sum signal to provide a combined signal, meaNs for delaying the combined signal, means for sequentially feeding the sum and combined signals to a third channel operating in dependency on the amplitude of the sum signal, means for amplifying the third channel signal, means for separately peak detecting two pulse signals, switch means for sequentially switching the amplified signals to the peak detector means, means for separately storing the peak detected voltages, means for sampling the stored voltages operative to supply a signal characterizing their difference D and a unipotential signal characterizing the absolute value of their difference D , comparator means operative to compare the sum signal to a predetermined multiple of the D signal, means responsive to the comparator means for rejecting said pulse signals if the sum signal is less than the multiplied D signal to discriminate against pulses received outside an angular range from which the desired signals are incident, integrator means, means responsive to the comparator means to transmit a signal characterizing the D signal to the integrator if the sum signal is greater than the multiplied D signal, and means controlling the summing means responsive to the integrator output operative to vary the controlled fraction of the sum pulse signal to equalize the sum and combined pulse signals to maintain angular selectivity for said desired signals.
Claim 19
Independent Claim
93 words
The method of angularly selecting desired received pulse signals in a monopulse system comprising: receiving recurrent pulse signals, segregating the sum and difference signals, adding a controlled fraction of the sum to the difference signal to form a combined signal, rejecting said pulse signals if the sum signal is less than a multiple of the absolute value of the difference between the sum and combined signals, and utilizing said pulse signals if the sum signal is greater than the multiple of the absolute value of the difference between the sum and combined signals.
Claim 20
Independent Claim
93 words
The method of angularly selecting desired received pulse signals in a monopulse system comprising: receiving recurrent pulse signals, segregating the sum and difference signals, adding a controlled fraction of the sum to the difference signal to form a combined signal, rejecting said pulse signals if the sum signal is less than a multiple of the absolute value of the difference between the sum and combined signals, and utilizing said pulse signals if the sum signal is greater than the multiple of the absolute value of the difference between the sum and combined signals.
Claim 21
Dependent Claim
62 words
The method of claim 14 further comprising: integrating signals characterizing the difference between the sum and combined signals when the sum signal is greater than the multiple of the absolute value of the difference between the sum and combined signals, and varying the controlled fraction of the sum signal in dependency on the integrand to maintain angular selectivity for said desired signals.
Claim 22
Dependent Claim
21 words
The method of claim 15 further comprising: gating only the leading edge of the received pulses before forming the combined signal.
Claim 23
Dependent Claim
15 words
The method of claim 15 further comprising: guiding the system in dependency on the integrand.
Claim 24
Independent Claim
187 words
The method of angularly selecting desired received pulse signals in a monopulse system comprising: receiving recurrent pulse signals, segregating the sum and difference signals, adding a fraction of the sum to the difference signal to form a combined signal, delaying the combined signal, sequentially combining the sum and combined signals, amplifying the sequentially combined signals, sequentially individually peak detecting the amplified sum and combined signals, separately storing the peak signals detected, comparing the sum and combined stored peak detected signals to derive signals characteristic of their difference D and the absolute value of their difference D , comparing the sum signal with a predetermined multiple of the D signal, rejecting said pulse signals if the sum signal is less than the multiplied D signal to angularly discriminate against undesired pulse signals, transmitting a D characterized signal for integration if the sum signal is greater than the multiplied D signal, integrating said last transmitted D signals, and varying the added fraction of the sum pulse signal in dependency on the integrand to equalize the sum and coMbined pulse signals to maintain angular selectivity for said desired pulse signals.
Claim 25
Independent Claim
187 words
The method of angularly selecting desired received pulse signals in a monopulse system comprising: receiving recurrent pulse signals, segregating the sum and difference signals, adding a fraction of the sum to the difference signal to form a combined signal, delaying the combined signal, sequentially combining the sum and combined signals, amplifying the sequentially combined signals, sequentially individually peak detecting the amplified sum and combined signals, separately storing the peak signals detected, comparing the sum and combined stored peak detected signals to derive signals characteristic of their difference D and the absolute value of their difference D , comparing the sum signal with a predetermined multiple of the D signal, rejecting said pulse signals if the sum signal is less than the multiplied D signal to angularly discriminate against undesired pulse signals, transmitting a D characterized signal for integration if the sum signal is greater than the multiplied D signal, integrating said last transmitted D signals, and varying the added fraction of the sum pulse signal in dependency on the integrand to equalize the sum and coMbined pulse signals to maintain angular selectivity for said desired pulse signals.
Claim 26
Independent Claim
202 words
The method of angularly selecting desired received pulse signals in a monopulse system comprising: receiving recurrent pulse signals, segregating the sum and difference signals, adding a fraction of the sum to the difference signal to form a combined signal, delaying the combined signal, amplitude gating the sum signal, sequentially combining the sum and combined signals only when the sum signal is within a preselected amplitude range, amplifying the sequentially combined signals, sequentially individually peak detecting the amplified sum and combined signals, separately storing the peak signals detected, comparing the sum and combined stored peak detected signals to derive signals characteristic of their difference D and the absolute value of their difference D , comparing the sum signal with a predetermined multiple of the D signal, rejecting said pulse signals if the sum is less than the multiplied D signal to angularly discriminate against undesired pulse signals, transmitting a D characterized signal for integration if the sum signal is greater than the multiplied D signal, integrating said last transmitted D signals, and varying the added fraction of the sum pulse signal in dependency on the integrand to equalize the sum and combined pulse signals to maintain angular selectivity for said desired pulse signals.
Claim 27
Independent Claim
202 words
The method of angularly selecting desired received pulse signals in a monopulse system comprising: receiving recurrent pulse signals, segregating the sum and difference signals, adding a fraction of the sum to the difference signal to form a combined signal, delaying the combined signal, amplitude gating the sum signal, sequentially combining the sum and combined signals only when the sum signal is within a preselected amplitude range, amplifying the sequentially combined signals, sequentially individually peak detecting the amplified sum and combined signals, separately storing the peak signals detected, comparing the sum and combined stored peak detected signals to derive signals characteristic of their difference D and the absolute value of their difference D , comparing the sum signal with a predetermined multiple of the D signal, rejecting said pulse signals if the sum is less than the multiplied D signal to angularly discriminate against undesired pulse signals, transmitting a D characterized signal for integration if the sum signal is greater than the multiplied D signal, integrating said last transmitted D signals, and varying the added fraction of the sum pulse signal in dependency on the integrand to equalize the sum and combined pulse signals to maintain angular selectivity for said desired pulse signals.
Claim 28
Dependent Claim
24 words
The method of claim 19 further comprising: automatically controlling the amplification gain in dependency on sum pulse amplitudes greater than the multiplied D signal.
References Cited (Backward Citations)
US3153234A
Cited
US3167761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |