Autodyne Radar Detecting the Motion Direction of Reflecting Objects

Presented in this paper are three versions of technical decision for autodyne radar, which provide the opportunity to measure simultaneously the velocity of objects motion and to detect the direction of their relative movement. The radar includes combined antenna connected to autodyne transmit-receive module with frequency conversion and decoupling wideband transformer, IF signal amplifier, frequency discriminator, amplitude detector, phase comparator and frequency counter. The direction of relative motion can be defined with the aid of phase shift between autodyne amplitude changes and frequency changes in the oscillator being influenced by the reflected reradiated signal