US4875050A
Expired / Lapsed
US
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Generalized doppler matched binary pulse compressor
Assignee: ITT Gilfillan Inc
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Filing: 1988-02-12
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Granted: 1989-10-17
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Expires: 2008-02-12
Abstract
Abstract A Doppler matched binary pulse compressor having means to initiate operation, means to generate a Doppler matched filter bank, means to compress the pulses from the Doppler matched filter, either linear or soft limited, means to estimate the signal phase in real time and means to select overall optimal filters in real time. The foregoing includes a phase estimator having a quadrant detector and means to scale the quadrature components while preserving the signal phase, means to reduce accuracy computations to 45° or less of the first quadrant, and means to reconstruct the phase to place the signal in the proper quadrant.
Inventors
- 👤 Dev D. Rathi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:09
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/26; G01S13/28; G01S13/284; G01S13/288
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
97 words
A doppler matched binary pulse compressor having means to initiate operation thereof; means to generate a doppler matched filter bank; means to compress the pulses from the doppler matched filter; means to estimate the input signal phase in real time including a phase estimator having a quadrant detector, means to scale the quadrature components while preserving the signal phase, means to reduce accuracy computations to 45° or less of the first quadrant, and means to reconstruct the phase to place the signal in the proper quadrant; and, means to select the overall optimal filter in real time.
Claim 2
Dependent Claim
97 words
A doppler matched binary pulse compressor having means to initiate operation thereof; means to generate a doppler matched filter bank; means to compress the pulses from the doppler matched filter; means to estimate the input signal phase in real time including a phase estimator having a quadrant detector, means to scale the quadrature components while preserving the signal phase, means to reduce accuracy computations to 45° or less of the first quadrant, and means to reconstruct the phase to place the signal in the proper quadrant; and, means to select the overall optimal filter in real time.
Claim 3
Dependent Claim
24 words
The Doppler matched binary pulse compressor of claim 1 in which the means to compress the pulses from the Doppler matched filter is linear.
Claim 4
Dependent Claim
24 words
The Dopple matched binary pulse compressor of claim 1 in which the means to compress the pulses from the Doppler matched filter is soft-limited.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-16 | 1993-04-17 | 1993-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-16 | 1997-04-17 | 1997-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-16 | 2001-04-17 | 2001-10-17 | $7700.00 | Window Closed / Lapsed |