US3623089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for integrating successive radar video signals in a computer
Assignee: United States Department of the Navy
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Filing: 1969-10-08
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Granted: 1971-11-23
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Expires: 1989-10-08
Abstract
Abstract To improve the signal-to-noise ratio in a radar receiver, a succession of video signals from a fixed source at a given range and azimuth are repeatedly received, each raw signal being sampled and converted to a binary coded number or word of say seven bits, and fed into the first of a series of seven-stage shift registers. Each seven-bit word is shifted into the next register as new information is fed into the first register, the word in the last register being discarded. After each new word is inserted the contents of each register is converted back to its analog value, all analog values being then added together and applied to the display cathode-ray tube.
Inventors
- 👤 Lewis H Bossert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:25
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/28; G01S7/2806
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
110 words
The method of deriving reoccurring wanted signals from a background of random noise, said method comprising: repeatedly receiving said reoccurring raw signals, sampling at spaced time intervals the instantaneous amplitude of a predetermined segment of the signal plus noise voltage, converting each sampled voltage to a coded digital number, storing the bits of each coded number in a series of storage banks, shifting each digital number from the first storage bank to the next and hence successively through each of said series, converting the digital content at each bank after each shift to the analog equivalent, adding together the analog numbers after each shift, and displaying the resultant summed voltage.
Claim 2
Independent Claim
110 words
The method of deriving reoccurring wanted signals from a background of random noise, said method comprising: repeatedly receiving said reoccurring raw signals, sampling at spaced time intervals the instantaneous amplitude of a predetermined segment of the signal plus noise voltage, converting each sampled voltage to a coded digital number, storing the bits of each coded number in a series of storage banks, shifting each digital number from the first storage bank to the next and hence successively through each of said series, converting the digital content at each bank after each shift to the analog equivalent, adding together the analog numbers after each shift, and displaying the resultant summed voltage.
Claim 3
Dependent Claim
50 words
The method defined in claim 1 of deriving reoccurring signals further comprising the step of: locally generating and transmitting reoccurring radar-type pulses, locally generating successive storage address voltages, and directing said coded digital numbers to different storage addresses in response to successive trigger pulses from said locally generated radar-type pulses.
Claim 4
Independent Claim
132 words
A system for enhancing the signal-to-noise ratio of reoccurring radar signals comprising: means for sampling the received signal at predetermined intervals throughout a predetermined segment of the received signal; means for converting the amplitude of each sample to a multiple bit encoded binary number; magnetic storage means; means for feeding the groups of binary bits of each encoded number of the samples into one portion of said storage means; means for shifting the groups of bits progressively to new locations along said storage means; means for cyclically summing the numerical value of the numbers of a segment of said storage means, and displaying the summed values; and a shift register coupled between adjacent locations along said storage means each register having sufficient stages to accommodate each bit of the encoded binary numbers.
Claim 5
Independent Claim
132 words
A system for enhancing the signal-to-noise ratio of reoccurring radar signals comprising: means for sampling the received signal at predetermined intervals throughout a predetermined segment of the received signal; means for converting the amplitude of each sample to a multiple bit encoded binary number; magnetic storage means; means for feeding the groups of binary bits of each encoded number of the samples into one portion of said storage means; means for shifting the groups of bits progressively to new locations along said storage means; means for cyclically summing the numerical value of the numbers of a segment of said storage means, and displaying the summed values; and a shift register coupled between adjacent locations along said storage means each register having sufficient stages to accommodate each bit of the encoded binary numbers.
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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |