Method and apparatus for digital compensation of VCO nonlinearit

Details Method and apparatus for digital compensation of VCO nonlinearit Method and apparatus for digital compensation of VCO nonlinearit

1996-06-06

1998-02-17

Eldred, J. Woodrow

Communications: directive radio wave systems and devices (e.g.,

Return signal controls radar system

Receiver

342132, 367 38, G01S 1300

Patent

active

057195803

ABSTRACT:
An apparatus for correcting for nonlinearities in modulation systems includes a transmitter (24, 28, 48, 50, 52) for transmitting a time varying modulated radar signal (56). A receiver (58, 62) receives an echo signal (60) resulting from reflection of the transmitted modulated signal (56). A mixer (48) compares the transmitted signal against the echo signal and providing a comparison signal indicative of the comparison. The comparison signal is sampled by an A/D converter (74). The A/D convertor (74) provides a sampled comparison signal to a controller/DSP (22). Controller/DSP (22) resamples the sampled comparison signal at selected resample times and effectively varies the selected resample times to correct for nonlinearities in the comparison signal resulting from nonlinearities of the transmitted time varying modulated signal.

REFERENCES:
patent: 3975731 (1976-08-01), Latham et al.
patent: 3979748 (1976-09-01), Gelleknik
patent: 4404562 (1983-09-01), Kretschmer, Jr. et al.
patent: 4620788 (1986-11-01), Giger
patent: 4626853 (1986-12-01), Lee et al.
patent: 4912472 (1990-03-01), Reits
patent: 4937583 (1990-06-01), Poinsard
patent: 5036324 (1991-07-01), Lampler et al.
patent: 5105294 (1992-04-01), Degura et al.
patent: 5165051 (1992-11-01), Kumar
patent: 5189428 (1993-02-01), Bouvet et al.
patent: 5357331 (1994-10-01), Flockencier
patent: 5376938 (1994-12-01), Martinez et al.

Affiliated with

Also associated with

Rating

Method and apparatus for digital compensation of VCO nonlinearit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for digital compensation of VCO nonlinearit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for digital compensation of VCO nonlinearit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1787485