US3701153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radar testing in a clutter environment
Assignee: United States Department of the Navy
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Filing: 1971-02-04
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Granted: 1972-10-24
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Expires: 1991-02-04
Abstract
Abstract An analyzer receives an input signal from a candidate radar and distinguishes by means of timed pulses between a signal in clutter and an adjacent clutter signal. A histogram is formed of each of the signals which shows the amplitude of the received signals as a function of the frequency of the amplitude signals. The data of this histogram is then stored for further evaluation on the performance of the candidate radar.
Inventors
- 👤 Richard P Gagliardi
- 👤 Allen F Beans
- 👤 Alfred M Eddowes
- 👤 Herbert Greenblatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:24
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/40
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
157 words
A radar signal processing system comprising: multiplexing means adapted to receive radar video signals and a d.c. calibrated signal for providing a multiplexed output signal of the video and d.c. signals; first sampling means operatively connected to receive the multiplexed output signal and trigger timing signals for taking a first sample of the multiplexed output signal at first predetermined intervals and boxcarring the first sample signals; second sampling means operatively connected to receive the multiplexed output signal and to receive trigger timing signals for taking a second sample of the multiplexed output signal at second predetermined intervals at the same rate but at differing time increments than the first predetermined intervals and boxcarring the second sample signals; and analyzing means operatively connected to said first and second sampling means for receiving the first and second boxcarred signals for providing information on the number of boxcarred signals within predetermined amplitude bins for a predetermined fixed number of samples.
Claim 2
Dependent Claim
157 words
A radar signal processing system comprising: multiplexing means adapted to receive radar video signals and a d.c. calibrated signal for providing a multiplexed output signal of the video and d.c. signals; first sampling means operatively connected to receive the multiplexed output signal and trigger timing signals for taking a first sample of the multiplexed output signal at first predetermined intervals and boxcarring the first sample signals; second sampling means operatively connected to receive the multiplexed output signal and to receive trigger timing signals for taking a second sample of the multiplexed output signal at second predetermined intervals at the same rate but at differing time increments than the first predetermined intervals and boxcarring the second sample signals; and analyzing means operatively connected to said first and second sampling means for receiving the first and second boxcarred signals for providing information on the number of boxcarred signals within predetermined amplitude bins for a predetermined fixed number of samples.
Claim 3
Dependent Claim
133 words
A radar signal processing system according to claim 1 wherein said analyzing means further comprises: first pulse height analyzing means operatively connected to said first sampling means for receiving the first boxcarred signals and providing information on the number of boxcarred signals within predetermined amplitude bins for a predetermined fixed number of samples; second pulse height analyzing means operatively connected to said second sampling means for receiving the second boxcarred signals and providing information on the number of boxcarred signals within predetermined amplitude bins for a predetermined fixed number of samples; and counter means operatively connected to receive the trigger timing signals and for providing output signals determinative of the number of predetermined fixed number of samples operated upon by said first pulse height analyzing means and said second pulse height analyzing means.
Claim 4
Dependent Claim
55 words
A radar signal processing system according to claim 2 further comprising: a visual readout indicator selectively connected to one of said first pulse height analyzing means and said second pulse height analyzing means for providing visual indication of the number of boxcarred signals received by said selected pulse height analyzer within a preselected amplitude bin.
Claim 5
Dependent Claim
59 words
A radar signal processing system according to claim 3 further comprising: integrator resolving means operatively connected to a selected one of said first pulse height analyzing means and said second pulse height analyzing means for providing information on the number of boxcarred signals received by the selected pulse height analyzing means of a magnitude less than a preselected amplitude.
Claim 6
Dependent Claim
52 words
A radar signal processing system according to claim 4 further comprising: recording means operatively connected to a selected one of said first pulse height analyzer and said second pulse height analyzer for providing a permanent record of the number of boxcarred signals within predetermined amplitude bins in the selected pulse height analyzer.
Claim 7
Dependent Claim
59 words
A radar signal processing system according to claim 5 further comprising: viewing means operatively connected to receive the video signal from said multiplexer and signals from said first and second sampling means determinative of the time of said first predetermined interval and said second predetermined interval for providing a visual output showing the portion of said video signal sampled.
Claim 8
Dependent Claim
45 words
A radar signal processing system according to claim 6 further comprising: mixing means interposed between said first and second sampling means and said viewing means for mixing the signals from said first and second sampling means and providing a single output to said viewing means.
Claim 9
Dependent Claim
27 words
A radar signal processing system according to claim 7 wherein said viewing means further comprises: a cathode ray tube oscilloscope with a dual trace vertical amplifier unit.
Claim 10
Dependent Claim
22 words
A radar signal processing system according to claim 8 further comprising: delay means interposed between said multiplexer means and said viewing means.
References Cited (Backward Citations)
US3430235A
Cited
US3618089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |