Method of preventing interference between radars and radar...

Details Method of preventing interference between radars and radar... Method of preventing interference between radars and radar...

2006-05-03

2008-10-21

Tarcza, Thomas H. (Department: 3662)

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

Plural radar

C342S159000

Reexamination Certificate

active

07439903

ABSTRACT:
A radar system mounted on a vehicle includes a first radar and a second radar, each having a transmitter-receiver and a signal processor. The transmitter-receiver transmits radar waves to detect objects such as another vehicle or other obstacles. An operating cycle period T1, T2and a transmission time X1, X2during which the radar waves are transmitted are set in both radars to satisfy the formula: K·T2+X2+X1≦T1≦(K+1)·T2−X2−X1under a condition that T1>T2, where K is a positive integer. By setting both radars in this manner, interference between two radars is avoided without using additional devices in the radar system, and a high detection accuracy is realized.

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El-Aziz (Circuits and Systems, 1992. Proceedings of the 35th Midwest Symposium on, Aug. 9-12, 1992 pp. 166-169 vol. 1).

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