US5265121A
Expired / Lapsed
US
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Spread spectrum coherent processor
Assignee: Individual
•
Filing: 1991-11-14
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Granted: 1993-11-23
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Expires: 2011-11-14
Abstract
Abstract A delay device for delaying a received signal as a delayed-received signal, and a correlator for estimating a phase angle between the received signal and the delayed-received signal. A parametric encoder estimates a phase angle between the received signal and a delayed-received signal.
Inventors
- 👤 Clarence H. Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:55
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/69; H04B1/713; H04B1/707; H04B1/709
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
A method for inference detecting a received signal in noise, comprising the steps of: coherently summing a plurality of samples of the received signal; generating a correlation function phase signal, from the summed plurality of samples of the received signal, using a correlator phase detector; phase centroiding, using a signal device, the correlation function phase signal to generate a phase centroid estimate vector; comparing, using a comparator, a scalar value of the phase centroid estimate vector to background noise to detect the received signal.
Claim 2
Independent Claim
84 words
A method for inference detecting a received signal in noise, comprising the steps of: coherently summing a plurality of samples of the received signal; generating a correlation function phase signal, from the summed plurality of samples of the received signal, using a correlator phase detector; phase centroiding, using a signal device, the correlation function phase signal to generate a phase centroid estimate vector; comparing, using a comparator, a scalar value of the phase centroid estimate vector to background noise to detect the received signal.
Claim 3
Dependent Claim
36 words
The method as set forth in claim 1, further including the step of coherently running multiple signal events by vector addition of a plurality of phase centroid estimate vectors of a plurality of independent signal events.
Claim 4
Independent Claim
82 words
An apparatus for inference detecting a received signal in noise, comprising: means for generating from the received signal a plurality of samples of the received signal; a correlation phase detector for generating, from the plurality of samples of the received signal, a correlation function phase signal; a signal device for phase centroiding the correlation function phase signal to generate a phase centroid estimate vector; and a comparator for comparing the phase centroid estimate vector to background noise to detect the received signal.
Claim 5
Independent Claim
82 words
An apparatus for inference detecting a received signal in noise, comprising: means for generating from the received signal a plurality of samples of the received signal; a correlation phase detector for generating, from the plurality of samples of the received signal, a correlation function phase signal; a signal device for phase centroiding the correlation function phase signal to generate a phase centroid estimate vector; and a comparator for comparing the phase centroid estimate vector to background noise to detect the received signal.
Claim 6
Dependent Claim
35 words
The method as set forth in claim 3, further including means for coherently running multiple signal events by vector addition of a plurality of phase centroid estimate vectors of a plurality of independent signal events.
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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) | 1996-11-22 | 1997-05-24 | 1997-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-22 | 2001-05-24 | 2001-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-22 | 2005-05-24 | 2005-11-23 | $7700.00 | Window Closed / Lapsed |