Pulse radar device

A pulse radar device, comprising:

• a continuous wave generation circuit generating a continuous wave of a prescribed high frequency;
• a transmission circuit receiving the continuous wave generated by the continuous wave generation circuit and modulating the continuous wave into a pulse signal;
• a transmitting antenna repeatedly emitting the pulse signal from the transmission circuit into space at a prescribed emission period;
• two or more receiving antennas receiving reflected signals from the pulse signal emitted from the transmitting antenna reflecting off of an object to be measured;
• two or more amplifiers respectively amplifying the received reflected signals that have been received by the two or more receiving antennas so as to output respective amplified signals;
• a signal selection switch receiving the respective amplified signals and switching between said respective amplified signals at a prescribed switching period so as to sequentially select and output the amplified signals originating from one of the receiving antennas at the prescribed switching period;
• a mixer receiving said selected amplified signals sequentially outputted from the signal selection switch, the mixer down-converting said selected amplified signals by using the continuous wave input from the continuous wave generation circuit so as to output a baseband signal;
• a frequency analyzer analyzing the baseband signal from the mixer and outputting information about the object detected from the baseband signal;
• and
• a high pass filter provided after the signal selection switch and before the frequency analyzer, the high pass filter causing DC and other low frequency components that are lower than a prescribed frequency in the baseband signal to be removed before reaching the frequency analyzer.