Patent ID: 8305258
Filing Date: 2012-11-06
Classification: G01S

Abstract:
1. A radar device, which is mounted in a vehicle, for detecting a position, in the up-down direction, of an object present around the vehicle, the radar device comprising: a receive antenna having a plurality of element antennas which are disposed in the left-right direction such that at least some of the plurality of element antennas are shifted in the up-down direction from the others; a first position detector for detecting the position of the object in the up-down direction, based on a phase difference between respective reception signals received by the plurality of element antennas; and a first position corrector for correcting the position in the up-down direction, based on a history, within a previously set predetermined time period, of variation of the position in the up-down direction which is obtained by the first position detector, and obtaining a first corrected position, which is a position in the up-down direction after the correction, the variation being caused by reflected waves, which are generated by a radar wave being reflected by the object, arriving at the receive antenna through a plurality of paths including a road surface reflection path and a synthesized wave of the reflected waves which arrived through the plurality of paths being received at the receive antenna.