US3721979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detection in a multiple-target environment
Assignee: United States Department of the Army
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Filing: 1971-09-10
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Granted: 1973-03-20
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Expires: 1991-09-10
Abstract
Abstract A radar processor is divided into parallel channels for processing of the radar input information. One channel is a regular channel in which signals not having a large return therein are processed. Two other channels have their input therein controlled by a gate means which allows the radar returns only during the time a large signal return is present to be fed into one channel and allowing the remaining returns to enter into the other channel. In the channel in which the large signal return is allowed to be processed, an Nth law device and a zonal filter provide for enhancement of small returns which are included along with the large return. In this way the small returns can also be processed.
Inventors
- 👤 H Gouldthorpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:32
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/28
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
154 words
A processing system having a gate which has an input and outputs (1) and (2); signal information which may contain periodic large valued information and/or periodic small valued information; said input being connected to receive said signal information; said gate is so designed that during the time that large signal returns are present on the input, the signal information is fed to output (1) and during remaining time, the signal information is fed to output (2); first processor connected to the first output of said gate; a second processor connected to the second output of said gate; a small signal enhancing device having an input connected to the output (1) of said gate; filter means; an output of said signal enhancing device being connected through said filter means to said first processor; said signal information is radar returns from a radar receiver; and wherein said small signal enhancing device is a Nth law device.
Claim 2
Dependent Claim
154 words
A processing system having a gate which has an input and outputs (1) and (2); signal information which may contain periodic large valued information and/or periodic small valued information; said input being connected to receive said signal information; said gate is so designed that during the time that large signal returns are present on the input, the signal information is fed to output (1) and during remaining time, the signal information is fed to output (2); first processor connected to the first output of said gate; a second processor connected to the second output of said gate; a small signal enhancing device having an input connected to the output (1) of said gate; filter means; an output of said signal enhancing device being connected through said filter means to said first processor; said signal information is radar returns from a radar receiver; and wherein said small signal enhancing device is a Nth law device.
Claim 3
Dependent Claim
29 words
A claim as set forth in claim 1 further comprising a third processor connected to receive said signal information directly; and wherein said first processor provides post non-linear processing.
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) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |