Patent ID: 8547273
Filing Date: 2013-10-01
Classification: G01S

Abstract:
1. A pulse radar apparatus, comprising: a high-frequency transmitting section having an oscillator that generates a carrier wave of a predetermined frequency and configured to generate a pulsed transmission signal by cutting out the carrier wave generated by the oscillator in accordance to two or more transmission control signals; a transmitting antenna configured to input the transmission signal from the high-frequency transmitting section to radiate to the air as radio wave; a receiving antenna configured to receive reflected wave of the radio wave reflected by an object; a high-frequency receiving section configured to input a received signal from the receiving antenna to down-convert to a baseband signal by correlating with the transmission signal in accordance to at least one receiving control signal; and a baseband section including: wherein when the transmission control signals are denoted as X the digital signal processing unit is configured to select sequentially the transmission control signals X to calculate a low-noise signal by subtracting the replica signal from the digital signal output of the A/D converting unit when the control unit outputs the m transmission control signals and the receiving control signal; and to calculate a distance to the object and/or a relative speed of the object and/or an azimuth angle of the object based on the low-noise signal.