A New Waveform Design for Phase-Coded Quasi-CW Radar System

In this paper, we analyze the echo eclipse problem of phase-coded quasi-continuous wave (quasi-CW) radar using the echo eclipse ratio function and main lobe to side lobe ratio. And then we propose a waveform design method based on long short codes and synchronous alternation of carrier frequency. This method can not only solve the severe eclipse problem of short range target and simultaneously detect the whole range, but also increase the signal complexity and decrease the probability of interception. The simulation results show that the performance of phase coded quasi-CW radar can be effectively improved using the proposed waveform design method.