US3747097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radar target imaging technique
Assignee: United States Department of the Navy
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Filing: 1971-02-24
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Granted: 1973-07-17
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Expires: 1991-02-24
Abstract
Abstract A radar which utilizes high resolution range techniques to obtain an indicator of the target that approaches a visual image presentation having more than one dimension. Specifically, the invention utilizes the radar high resolution range video return to control the input of a CRO, the Y location on the CRO trace being highly resolved range and the X location being bipolar azimuth video. This technique greatly enhances the radar''s ability to avoid scintillation.
Inventors
- 👤 D Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:21
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/10; G01S13/00; G01S13/66
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
155 words
A two-dimensional radar system for use in target tracking which comprises: antenna means functioning to provide, first and second signals, said first signal being indicative of target range and said second signal being indicative of target angular error from said antenna bore sight; display means which provides a fast sweep in time along a first axis; sensitivity means coupled to said second signal operative to control the amplitude of said second signal in response to range information; said second signal being coupled to said display means to cause said fast sweep in time to be deflected in a second axis by an amount proportional to the angular error of said target; said first signal being coupled to said display means to cause a conditional change in said fast sweep which is indicative of said target range; whereby a two-dimensional display is formed such that each part of said target is located in range and angle.
Claim 2
Dependent Claim
155 words
A two-dimensional radar system for use in target tracking which comprises: antenna means functioning to provide, first and second signals, said first signal being indicative of target range and said second signal being indicative of target angular error from said antenna bore sight; display means which provides a fast sweep in time along a first axis; sensitivity means coupled to said second signal operative to control the amplitude of said second signal in response to range information; said second signal being coupled to said display means to cause said fast sweep in time to be deflected in a second axis by an amount proportional to the angular error of said target; said first signal being coupled to said display means to cause a conditional change in said fast sweep which is indicative of said target range; whereby a two-dimensional display is formed such that each part of said target is located in range and angle.
Claim 3
Dependent Claim
16 words
The two-dimensional radar system of claim 1 wherein said display means comprises a cathode ray tube.
Claim 4
Dependent Claim
24 words
The two-dimensional radar system of claim 1 wherein said range information is provided by a range tracker which is coupled to said first signal.
Claim 5
Dependent Claim
149 words
A two-dimensional radar system for use in target tracking which comprises: a monopulse antenna which provides first, second, and third output signals, said first signal being the sum output, said second signal being the azimuth difference output, and said third signal being the elevation difference output; display means for providing a fast sweep along a first axis, said sweep being proportional to target range; said second signal of said antenna being coupled to said display means; said second signal causing said sweep, along said first axis, to be deflected in a second axis to locate the angular position of said taget; said first signal of said antenna being coupled to said display means; said first signal causing said sweep to give an indication of the range position of said target; whereby a two-dimensional display is formed such that each part of said target is located in range and angle.
Claim 6
Dependent Claim
149 words
A two-dimensional radar system for use in target tracking which comprises: a monopulse antenna which provides first, second, and third output signals, said first signal being the sum output, said second signal being the azimuth difference output, and said third signal being the elevation difference output; display means for providing a fast sweep along a first axis, said sweep being proportional to target range; said second signal of said antenna being coupled to said display means; said second signal causing said sweep, along said first axis, to be deflected in a second axis to locate the angular position of said taget; said first signal of said antenna being coupled to said display means; said first signal causing said sweep to give an indication of the range position of said target; whereby a two-dimensional display is formed such that each part of said target is located in range and angle.
Claim 7
Dependent Claim
16 words
The two-dimensional radar system of claim 4 wherein said display means comprises a cathode ray tube.
Claim 8
Dependent Claim
29 words
The two-dimensional radar system of claim 4 wherein sensitivity means coupled to said second signal operates to control the amplitude of said second signal in response to range information.
Claim 9
Dependent Claim
23 words
The two-dimensional radar system of claim 6 wherein said range information is provided by a range tracker which is coupled to first signal.
Claim 10
Dependent Claim
41 words
The two-dimensional radar system of claim 3 wherein said third signal of said antenna is coupled to said display means; said third signal causing said sweep to be deflected in a second axis to locate the angular position of said target.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |