Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2004-04-08
2008-10-21
Malzahn, David H (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
Reexamination Certificate
active
07440988
ABSTRACT:
A dynamic weight generator. The inventive generator includes a first memory for storing a PN code; a second memory for storing a plurality of weights, the second memory being coupled to the first memory whereby data output by the first memory is used to address data stored in the second memory; and a correlator for multiplying an input signal by data output by the second memory. In the illustrative embodiment, the weights are finite impulse response filter correlation coefficients. The correlator includes two multipliers. The first of the multipliers is coupled to a source of an in-phase component of the input signal. The second of the multipliers is coupled to a source of a quadrature component of the input signal. The outputs of the multipliers are summed. In the illustrative application, the input signal is a GPS signal. For this application, the inventive teachings are implemented in a signal processing system adapted to receive a GPS signal and provide in-phase and quadrature signals in response thereto. The signal is filtered with a finite impulse response filter to provided weighted signals. The weighted signals are processed to generate nulling and beamsteering weights for the weighted signals. The weights may be used to equalize the received signals. In a more specific implementation, the received signals are partitioned into space frequency adaptive processing bands and space time adaptive processing is performed within the SFAP bands.
REFERENCES:
patent: 4734701 (1988-03-01), Grobert
patent: 5317322 (1994-05-01), Grobert
patent: 5694416 (1997-12-01), Johnson et al.
patent: 6130643 (2000-10-01), Trippett et al.
patent: 6201843 (2001-03-01), Kingston et al.
patent: 6327298 (2001-12-01), Grobert
patent: 6430216 (2002-08-01), Kober et al.
patent: 6727846 (2004-04-01), Brown
patent: 7092690 (2006-08-01), Zancewicz
patent: 2002/0012387 (2002-01-01), Shakeri et al.
patent: 2002/0071384 (2002-06-01), Hall et al.
patent: 2004/0001554 (2004-01-01), Sun et al.
patent: 0 599 553 (1994-06-01), None
Hatke G. F. ED, Mattthews M.B., “Adaptive array processing for wideband nulling in GPS systems,” Signals, Systems and Computers, 1998. Conference Record Of The thirty-Second ASILOMAR Conference, IEEE, vol. 1.2, Nov. 1, 1998, pp. 1332-1336
Kegu Yang et al, “Sectorized space-time adaptive processing for CDMA systems,” Statistical Signal and Array Processing, 2000. Proceedings of the Tenth IEEE Workshop, IEEE, Aug. 14, 2000, pp. 28-32.
Drs. James Ward and Stephen Kogon, Tutorial 1.2 Space-Time Adaptive Processing for AMTI and GMTI Radar, 2004 IEEE Radar Conference, Innovative Radar Technologies-Expanding System Capabilities, Apr. 26-29, 2004.
James K. Day and Dr. Ravi Adve, Session 8 Space-Time Adaptive Processing II, 2004 IEEE Radar Conference, Innovative Radar Technologies-Expanding System Capabilities, Apr. 26-29, 2004.
Alkov Leonard
Malzahn David H
Raytheon Company
LandOfFree
System and method for dynamic weight processing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for dynamic weight processing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for dynamic weight processing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4009079