OBJECT SENSING DEVICE, VEHICLE-MOUNTED RADAR SYSTEM, SURVEILLANCE RADAR SYSTEM, OBJECT SENSING METHOD, AND PROGRAM

摘要

The object sensing system according to the present invention is provided with a transmitter and a receiver. The transmitter is provided with an irradiation unit. The irradiation unit radiates an RF transmission signal, the frequency of which is periodically swept. The receiver is provided with a reception unit, an IF signal generation unit, a position detection unit, and a displacement detection unit. The reception unit receives an RF reception signal which is a reflected wave of the RF transmission signal reflected by at least one object. The IF signal generation unit mixes the RF transmission signal and the RF reception signal and generates an IF signal. The position detection unit detects the position of the object on the basis of the amplitude of a spectrum calculated from the IF signal for each period in which the frequency is swept. The displacement detection unit detects displacement of the object on the basis of the phase of a one-dimensional spectrum calculated from the IF signal for each period, the phase being the phase of the one-dimensional spectrum in the position of the object calculated by the position detection unit.