VEHICLE MOUNTED RADAR SYSTEM AND ITS SIGNAL PROCESSING METHOD

WIPO Patent Application WO/2005/066656

A1

Since a simultaneously detectable range is limited to one when a plurality of antennas are switched, a short distance detection range becomes small when a long distance antenna is used and, conversely, maximum detection distance decreases when a short distance antenna is used. When a radar is combined with an image sensor, the image sensor may exhibit a detection performance similar to that of a single radar due to bad weather or light beam conditions (backlight, forward light, and the like). The vehicle mounted radar system comprises a first radar for detecting at least the relative speed to a target or the position of the target by radiating a radio wave forward and receiving the reflected wave, and a second radar having a detection range different from that of the first radar, wherein both radars detect the target constantly. When the target deviates from the detection range of the first radar, information of the target detected immediately before it is transferred from the first radar to the second radar.

BAI JIE (JP)

PCT/JP2003/016969

July 21, 2005

December 26, 2003

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HITACHI LTD (JP)
BAI JIE (JP)

G01S13/931; G01S13/34; (IPC1-7): G01S13/93; G01S13/34

WO2002014898A2

2002-02-21

JPH07325149A	1995-12-12
JPH1027299A	1998-01-27
JPH11353599A	1999-12-24
EP0867972A1	1998-09-30
JP2003315452A	2003-11-06
JP2002131425A	2002-05-09
JP2001242242A	2001-09-07

Inoue, Manabu c/o Hitachi Ltd. (6-1, Marunouchi 1-chom, Chiyoda-ku Tokyo, JP)

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