Patent US4449568A successfully refreshed from Google Patents.
Patent US3603989A successfully refreshed from Google Patents.
US3603989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stage radar system
Assignee: United States Department of the Navy
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Filing: 1965-06-07
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Granted: 1971-09-07
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Expires: 1985-06-07
Abstract
Abstract 1. An improved multiple-resolution-element radar system comprising; means for developing multiple-resolution-element data having a first order of resolution; means for developing multiple-resolution-element data having a second order of resolution within said first order multiple-resolution-element data, said second order being of substantially finer resolution than said first order; a sequential signal detector arranged to receive said first order multiple-resolution-element data, said sequential detector being responsive to said received first order data for producing a first output or a second output indicative of the absence or presence of signal in said first order data, respectively; a second detector arranged to receive said second order multiple-resolution-element data, said second detector being operative for resolving the presence of signal within an incremental element of said second order of resolution and producing an output indicative thereof; and means responsive to said first output of said sequential detector or said output of said second detector for causing said system to develop a new sequence of multiple-resolution-element data.
Inventors
- 👤 James W Caspers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:23
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/106; G01S7/00; G01S7/02; G01S7/28; G01S7/285; G01S7/292; G01S7/2923
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
160 words
An improved multiple-resolution-element radar system comprising; means for developing multiple-resolution-element data having a first order of resolution; means for developing multiple-resolution-element data having a second order of resolution within said first orDer multipleresolution-element data, said second order being of substantially finer resolution than said first order; a sequential signal detector arranged to receive said first order multiple-resolution-element data, said sequential detector being responsive to said received first order data for producing a first output or a second output indicative of the absence or presence of signal in said first order data, respectively; a second detector arranged to receive said second order multiple-resolution-element data, said second detector being operative for resolving the presence of signal within an incremental element of said second order of resolution and producing an output indicative thereof; and means responsive to said first output of said sequential detector or said output of said second detector for causing said system to develop a new sequence of multiple-resolutionelement data.
Claim 2
Dependent Claim
160 words
An improved multiple-resolution-element radar system comprising; means for developing multiple-resolution-element data having a first order of resolution; means for developing multiple-resolution-element data having a second order of resolution within said first orDer multipleresolution-element data, said second order being of substantially finer resolution than said first order; a sequential signal detector arranged to receive said first order multiple-resolution-element data, said sequential detector being responsive to said received first order data for producing a first output or a second output indicative of the absence or presence of signal in said first order data, respectively; a second detector arranged to receive said second order multiple-resolution-element data, said second detector being operative for resolving the presence of signal within an incremental element of said second order of resolution and producing an output indicative thereof; and means responsive to said first output of said sequential detector or said output of said second detector for causing said system to develop a new sequence of multiple-resolutionelement data.
Claim 3
Dependent Claim
38 words
An improved multiple-resolution-element radar system as claimed in claim 1 wherein said sequential detector and said second detector are consecutively operative for detecting the presence of signal in said first order and said second order multiple-resolution-element data, respectively.
Claim 4
Dependent Claim
46 words
An improved multiple-resolution-element radar system as claimed in claim 1 wherein said second detector is responsive to the second output of said sequential detector to actuate said second detector for resolving the presence of signal within an incremental element of said second order of resolution data.
Claim 5
Dependent Claim
20 words
An improved multiple-resolution-element radar system as claimed in claim 1 wherein said second detector is of the sequential detector type.
Claim 6
Dependent Claim
21 words
An improved multiple-resolution-element radar system as claimed in claim 1 wherein said second detector is not of the sequential detector type.
Claim 7
Dependent Claim
28 words
An improved multiple-resolution-element radar system as claimed in claim 1 wherein each said first order resolution element is representative of an integral multiple of second order resolution elements.
Claim 8
Dependent Claim
27 words
An improved multiple-resolution-element radar system as claimed in claim 1 wherein said first order and said second order resolution elements comprise coarse and fine range bins, respectively.
Claim 9
Dependent Claim
44 words
An improved multiple-resolution-element radar system as claimed in claim 1 wherein said second detector is operatively responsive for resolving the presence of signal within only those first order of resolution incremental elements where the presence of signal has been detected by said sequential detector.
Claim 10
Dependent Claim
42 words
An improved multiple-resolution-element radar system as claimed in claim 1 wherein said means for developing multiple-resolution-element data having a first order of resolution is operative at a different frequency than said means for developing multiple-resolution-element data having a second order of resolution.
Claim 11
Dependent Claim
25 words
An improved multiple-resolution-element radar system as claimed in claim 1 and including matched filter means for developing said first and second orders of multiple-resolution-element data.
Claim 12
Dependent Claim
28 words
An improved multiple-resolution-element radar system as claimed in claim 1 and including means for encoding separate identification for each of said first and second orders of resolution data.
Claim 13
Dependent Claim
27 words
An improved multiple-resolution-element radar system as claimed in claim 11 and including means for simultaneously receiving and decoding said encoded first and second orders of resolution data.
References Cited (Backward Citations)
US3253277A
Cited
US3167738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |