Patent ID: 6859168
Filing Date: 2005-02-22
Classification: G01S

Abstract:
1. A radar apparatus which radiates a transmit signal from a transmitter section, and which receives said transmit signal reflected from an object by switching between a plurality of antennas, wherein said plurality of antennas are divided into a plurality of groups, and at least one of the plurality of antennas contained in each of said groups is a common antenna, and wherein said radar apparatus comprises: a selector switch section having a plurality of selector switches each for sequentially and selectively switching output terminals of said plurality of antennas and said common antenna contained in a corresponding one of said groups for connection to an input terminal; a plurality of channels each having an A/D converter and a downconverting section for downconverting a received signal that has been input from each of said antennas to said input terminal via a corresponding one of said plurality of selector switches; and a digital signal processing section for receiving an output from said A/D converter of each of said channels, and for applying prescribed processing to detect the distance to or the relative velocity of said object.