摘要
二相编码信号是一种常用的雷达脉冲压缩信号,其相位编码是具有良好的自相关特性的二元伪随机序列。针对目前常用的伪随机编码的缺点,分析了混沌序列作为二相编码序列的可行性和优越性,并给出了混沌二相编码信号的生成方案。仿真实验证明,混沌二相编码信号具有良好的自相关特性和大时宽带宽积,是一种理想的雷达脉冲压缩信号。最后,提出了用Lyapunov指数作为准则优选混沌编码序列。
The Binary-phase Coded Signal（BPCS） is a kind of common radar pulse compression signal, whose phase-coding is binary pseudo stochastic sequence with nicer autocorrelation features. Aiming at the disadvantages of the common pseudo stochastic sequences, the paper analyzed the feasibility and advantages of Chaotic Binary-phase Coded Signal（ CBPCS）, and proposed a scheme that generates CBPCS. The simulation experiment showed that CBPCS possesses nicer autocorrelation features and big product of time-width and bandwidth, and it is an ideal radar pulse-compression signal. At last,the paper pointed out that the Lyapunov exponent can be a rule to select the optimum chaotic coding sequences.
出处
《无线电工程》
2007年第3期28-30,共3页
Radio Engineering
