Ultra-linear signal processing for radar and laser radar

Details Ultra-linear signal processing for radar and laser radar Ultra-linear signal processing for radar and laser radar

2007-12-11

2007-12-11

Tarcza, Thomas H. (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C356S005100, C356S005010

Reexamination Certificate

active

11014919

ABSTRACT:
Systems, methods, and computer program products are provided for accurately measuring frequency-and/or-phase-related parameters of a sinusoidal signal that varies non-linearly in frequency or phase. A sinusoidal signal is sampled over a finite period of time at a plurality of sample points. The sampled signals are pre-processed, and a Fourier transform is performed on the pre-processed sampled signals. Phases of the pre-processed sampled signals are extracted from the Fourier transform, and a measurement indicative of frequency of the sinusoidal signal is determined from slope of the phases of the pre-processed sampled signals. Range to a target may be determined using the exemplary signal processing described above on laser radar interference signals.

REFERENCES:
patent: 5030824 (1991-07-01), Babbitt
patent: 5371587 (1994-12-01), de Groot et al.
patent: 6839471 (2005-01-01), Vogt, IV
patent: 2006/0061772 (2006-03-01), Kulawiec et al.

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