Anti-Clutter Waveform Design of Airborne Radar Short-Time Pulse Train Signal.

Short-time pulse train signal has narrow pulse width and high peak power, which enables it with great potential for airborne radar target detection. Clutter interference always exists in complex detection environment, thus the design of the anti-clutter emission waveform decides the accuracy of target detection. In this paper, a secondary optimization method based on maximum signal-clutter-to-noise ratio (SCNR) criterion and minimum squared error criterion is proposed for short-time pulse train signal form. Firstly, a maximum SCNR model solved by the Lagrange multiplier method is constructed based on prior information. Secondly, according to the short-time train signal form, the time-domain form of the optimal transmission signal is obtained by minimizing the weighted square error of the optimal spectrum and the train spectrum and the integrated side lobe of the train signal. Finally, simulation results show that the designed waveform is capable of anti-clutter interference and can effectively improve the SCNR in the clutter environment.