峰均功率比约束下扩展目标波形优化  

Waveform Design for Extended Target Detection under a Peak to Average Power Ratio Constraint

作　　者：陈茜茜 邓晓波 张广磊 

机构地区：[1]中航工业雷华电子技术研究所,江苏无锡214063

出　　处：《现代雷达》2016年第9期32-36,共5页Modern Radar

摘　　要：针对包络约束条件下扩展目标最优检测波形设计,提出了峰均功率比约束条件下最优检测波形优化方法。首先,建立了扩展目标信号模型;然后,通过将恒定包括约束转换成峰均功率比约束,推导出该约束下扩展目标最优检测波形优化模型;并将该非凸模型转换成易于求解的凸优化模型,由此获得了恒定包络和低起伏包络条件下的最优检测波形;最后,以某典型扩展目标为例,仿真对比了不同约束参数下波形的检测性能,验证了优化所得恒定包络、低起伏包络波形相比于传统Barker码波形具有更好的检测性能。Optimal waveform design for extended taret detection under the constraint of constant modulus is investigated. Firstly, the probability of detection as a function of the waveform is established. Then, considering the optimization of detection waveform for extended target under the constraint of constant modulus is a concave prblem, a method to transform the concave optimization problem to a convex optimization problem by converting the constant modulus constraint to peak to average power ratio （ PAR ） constraint is proposed. Finally, detection performance of the derived waveform is analyzed for a typical extended target model. Simulation results demonstrate that the optimized waveform has better performance than Barker code.

关 键 词：波形优化 扩展目标 峰均功率比 恒定包络 

分 类 号：TN957.51[电子电信—信号与信息处理]