MIMO radar signal design based on continuous chaos

The orthogonality of the radar waveform is the key to achieve MIMO radar. The existing MIMO radar waveform design method is almost design complex, large amount of calculation, it is difficult to produce in large quantities. In order to solve this problem, this paper applies pseudo randomness, sensitivity to initial conditions, easy to produce and other characteristics of continuous chaotic signal(CCFMS), the proposed MIMO radar signal is based on continuous chaotic FM signal. First, CCFMS ambiguity function is deduced, then the distance and Doppler resolution performance of the signal is analyzed. On this basis, the cross correlation is analyzed, and the influence of the different continuous chaos system on the signal performance is compared. The theoretical analysis and simulation results show that the signal has approximately "thumbtack type" ambiguity function, excellent quasi-orthogonal and low interception capabilities, and the signal is easy to generate.