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Simulation and analysis of rain clutter for PRC_cw radar at x-band

In this paper, it is firstly pointed out that the raining, as an object in the air, will cause the time spread of radar echo signal. For the pseudo-random code continuous wave (PRC_CW) radar, working with transmitting and receiving continuous EM waves, the echo signal at a specified moment will be the superposition of some spread echo signals in a period of time before this specified moment. A superposition algorithm was proposed to calculate the PRC_CW radar signal. Based on the former previous results on the characteristics of rain clutter, the amplitude fluctuation and the spectrum of the echo signal of the PRC_CW radar are investigated with simulation method.