中文摘要：

基于混沌序列的良好相关性和随机性，提出了一种多输入多输出（MIMO）雷达正交多相码的设计方法．通过不同初值迭代得到混沌序列，经过相应的量化和多相编码得到混沌波形．由于不同混沌波形的自相关旁瓣不相关，因而在使用多脉冲相干累积提高信噪比（SNR）的脉冲体制下，主副瓣比得到提高．最后的仿真结果表明，目标所在多普勒通道的输出具有很好的主副瓣比．

英文摘要：

Based on the good autocorrelation and random property of chaotic sequences, a method was proposedto design a polyphase orthogonal code for multiple-input multiple-output （MIMO） radar. Chaotic waveforms could be generated by quantifying and polyphase-coding chaotic sequences from different initial values. Auto- correlation sidelobes of different chaotic waveforms were uncorrelated, so that the mainlobe-to-sidelobe ratio was improved under the pulse system which increased the signal-to-noise ratio （SNR） by using the pulse coherent integration. Finally, the simulation results showed that the output of the Doppler channel where the target was located had a good mainlobe-to-sidelobe ratio.