Patent ID: 9618607
Date: 2017-04-11
CPC Classifications: G01S

Claim:
1. A radar apparatus capable of extracting peak signals obtained from a difference frequency between a transmitting signal of which a frequency is changed in a predetermined period, and a receiving signal obtained by receiving a reflection wave of a transmission wave based on the transmitting signal at a target, during a first period in which the frequency of the transmitting signal ascends, and a second period in which the frequency of the transmitting signal descends, and deriving information about the target based on the extracted peak signals, the radar apparatus comprising: a pairing unit configured to pair a peak signal extracted in the first period and a peak signal extracted in the second period; and a judging unit configured to judge whether or not the target is an overhead object based on the number of paired data of stationary objects existing within a predetermined range from the radar apparatus and being arranged at a substantially regular interval in a traveling direction of a vehicle on which the radar apparatus is mounted, among the paired data obtained by pairing the peak signals in the pairing unit, wherein if the target has been judged as the overhead object for a number of times within a predetermined time and the number of times exceeds a predetermined number, the judging unit subsequently executes a relaxed judging process based on a threshold that is lower than a predetermined threshold for determining an overhead object.