针对距离欺骗干扰对雷达探测性能的影响，在波形设计中应尽量满足雷达发射信号的正交特性，即雷达发射波形具有更低的互相关和自相关旁瓣。采用具有良好自相关特性的混沌二相编码正交频分复用(OFDM)雷达信号，提出一种基于混沌粒子群算法的正交混沌二相编码OFDM雷达信号。以自相关和互相关联合最优作为适应值函数，利用混沌粒子群算法优化设计正交编码脉冲串信号。仿真实验结果证明，基于混沌粒子群优化的正交混沌二相编码OFDM雷达信号自相关旁瓣和互相关的最大值为–22.33?dB，具有良好的相关特性，对抗距离欺骗干扰有一定效果。

For the influence of distance deception jamming on radar detection performance, the orthogonal characteristics of radar signals should be satisfied in waveform design, and radar waveforms should have lower cross-correlation and auto-correlation side-lobes. The chaotic binary-phase coded Orthogonal Frequency Division Multiplexing(OFDM) radar signal with good autocorrelation characteristics is adopted, then an orthogonal chaotic binary phase coded OFDM radar signal based on chaotic particle swarm optimization is proposed. The joint optimization of auto-correlation and cross-correlation is used as fitness function，the orthogonal coded pulse sequence signals are designed by using chaotic particle swarm optimization. The simulation results show that the chaotic binary-phase coded OFDM radar based on chaotic particle swarm optimization has a good cross-correlation and auto-correlation side-lobes whose maximum value is -22.33?dB, and it has a certain effect on the anti-distance deception.