Signal Processing Method in Frequency Switch Keying Radar Sensors

The description of a new method of signal processing in radar sensors of continuous radiation with frequency switching is presented. The proposed method allows you to expand the working area of the sensors in range and speed, as well as provide the ability to determine the direction of movement of the target. The essence of the method is to obtain Doppler signals at different frequencies, generate them, calculate an integer number of periods of the Doppler signal and switch the frequency of the probing radio signal from one frequency to another at the moments when the Doppler signal passes through zero. A description is given of sensors with a homodyne and autodyne transceiver construction. The latter is done on the Ka-band Gunn-diode oscillator.