Communications: directive radio wave systems and devices (e.g. – With particular circuit – Digital processing
Reexamination Certificate
2005-03-01
2005-03-01
Tarcza, Thomas H. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Digital processing
C342S017000, C342S019000, C342S192000, C342S196000
Reexamination Certificate
active
06861977
ABSTRACT:
This invention relates to radar signal processing. In particular, this invention concerns signal processing of agile Pulse Repetition Time (PRT) sampled signal transmitted using spread spectrum technique. This invention solves, in particular, the incompatibility between Doppler processing and spread spectrum such providing an improved anti-jamming technique without narrowing the Doppler range. The method for deconvolution comprises combining the pulses with the same carrier in a burst, transforming the obtained signals from time to frequency domain, and deconvolving the obtained spectra. In a first embodiment of this invention, such a deconvolution method is adapted to irregular PRT sampled signal comprises an irregular samples to regular zero-padded samples conversion step between the combination and the transformation steps.
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Prati, C. et al. “Blind deconvolution for Doppler centroid estimation in high frequency SAR”, , IEEE Trans on Geoscience and Remote Sensing, vol: 29 , Issue: 6, Nov. 1991, pp. 934-941.*
IEEE article by Oderland I., et al., Eagle-A High Accuracy 35 GHZ Tracking Radar, May 7, 1990, pp. 461-466.
Alsomiri Isam
Lowe Hauptman & Gilman & Berner LLP
Tarcza Thomas H.
Thales Netherland B.V.
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