Patent ID: 6839019
Filing Date: 2005-01-04
Classification: G01S

Abstract:
1. A pulse radar device, comprising: a modulation signal generation portion for generating a modulation signal; an oscillation means for oscillating a carrier wave which has been frequency-modulated on the basis of the modulation signal; a distributor for distributing the carrier wave generated by the oscillation means; a pulse modulation means for modulating the carrier wave distributed by the distributor to a pulse wave; a transmission means for transmitting the pulse wave modulated by the pulse modulation means as an electromagnetic wave; a reception means for receiving a reflection wave obtained by reflecting the electromagnetic wave transmitted from the transmission means by a target substance; a demodulation means for demodulating a reception signal received by the reception means on the basis of the carrier wave distributed by the distributor; a limiting means for limiting an amplitude of a leakage signal which appears in a pulse signal demodulated by the demodulation means; a capacitor for removing a d.c. component from the pulse signal; an amplification means for amplifying the pulse signal which passed through the capacitor; an A/D converter for quantizing the pulse signal that has been amplified by the amplification means; and a CPU for calculating a distance and a relative speed to the target substance on the basis of the pulse signal that has been quantized by the A/D converter.