EBPSK编码调制的二次监视雷达测速性能分析

发布时间：2018-05-17 12:45

本文选题：二次监视雷达 + 扩展二元相移键控　；参考：《东南大学学报(自然科学版)》2014年04期

【摘要】：为了解决二次监视雷达(SSR)接收到目标应答信号时受到异步干扰的问题,在SSR对目标的应答信号的脉冲宽度内,引入扩展二元相移键控(EBPSK)对载波进行相位编码调制.理论分析了SSR系统中速度与频偏的关系,通过研究EBPSK相位调制脉冲的波形特点,提出了将EBPSK相位编码脉冲信号作为SSR系统应答信号的方案,从而有效利用异步干扰提升双基站SSR系统的目标测速精度.理论分析与仿真实验结果表明,在目标测速精度方面,EBPSK相位编码的双基站SSR系统明显优于EBPSK相位编码以及纯正弦调制脉冲的单基站SSR系统.因此,验证了EBPSK相位编码脉冲信号在双基站雷达系统中的有效性和可行性.
[Abstract]:In order to solve the problem of asynchronous interference when the secondary surveillance radar (SSRs) receives the target response signal, the extended binary phase shift keying (EBPSK) is introduced to modulate the carrier phase code within the pulse width of the SSR response signal to the target. The relationship between velocity and frequency offset in SSR system is analyzed theoretically. By studying the waveform characteristics of EBPSK phase modulation pulse, the scheme of using EBPSK phase coded pulse signal as the response signal of SSR system is proposed. Therefore, asynchronous interference is used to improve the accuracy of target velocity measurement in dual base station SSR system. The theoretical analysis and simulation results show that the dual-base station SSR system with EBPSK phase coding is superior to the single base station SSR system with EBPSK phase coding and pure sinusoidal modulation pulse in terms of target velocity measurement accuracy. Therefore, the validity and feasibility of EBPSK phase coded pulse signal in dual base station radar system are verified.
【作者单位】：东南大学信息科学与工程学院;北京跟踪与通信技术研究所;
【基金】：国家自然科学基金资助项目(61271204) “十二五”国家科技支撑计划资助项目(2012BAH15B00)
【分类号】：TN957.51

【相似文献】