Vehicle diplex doppler near-obstacle detection system

Details Vehicle diplex doppler near-obstacle detection system Vehicle diplex doppler near-obstacle detection system

1988-11-01

1990-01-09

Tarcza, Thomas H.

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

Determining distance

With frequency modulation

342 69, 342 84, 342 85, G01S 1338

Patent

active

048931250

ABSTRACT:
A vehicle near-obstacle detector in the form of a diplex Doppler radar system provides range information between a vehicle and an object based on the phase shift between a pair of Doppler signals derived from two transmitted radar signals at slightly different frequencies. A speed dependent error introduced by the time constant of a filter circuit converting duty cycle range information based on the phase shift to an analog signal is compensated by introducing a small time shift in the signal path of one of the Doppler signals to effect a shift in the duty cycle range information.

REFERENCES:
patent: 3750171 (1973-07-01), Faris
patent: 3863253 (1975-01-01), Kiyoto et al.
patent: 3898655 (1975-08-01), Tresselt
patent: 3978481 (1976-08-01), Angwin et al.
patent: 4063237 (1977-12-01), Nier et al.
patent: 4101888 (1978-07-01), Heller et al.
patent: 4143370 (1979-03-01), Yamanaka et al.
patent: 4148028 (1979-04-01), Fujiki
patent: 4203113 (1980-05-01), Baghdady
patent: 4348675 (1982-09-01), Senzaki et al.
patent: 4388622 (1983-06-01), Fletcher, Jr.
patent: 4697184 (1987-09-01), Cheal et al.
patent: 4703429 (1987-10-01), Sakata

Affiliated with

Also associated with

Rating

Vehicle diplex doppler near-obstacle detection system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vehicle diplex doppler near-obstacle detection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vehicle diplex doppler near-obstacle detection system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-147473