摘要
基于Dechirping理论,提出了一种能有效测量大时带积线性调频(LFM)脉冲信号在宽带数字阵列不同通道间相对时延的新方法。该方法利用了FFT算法,不仅系统所需器件简单易行,而且测量精度与实时性较好,并能在一次测量过程中对多个通道进行同时测量。从理论角度分析了这种测量方法的性能与特点,在此基础上确定出系统的各项参数,并提出了进一步简化系统的方案。仿真实验结果验证了所提方法的有效性。
Based on the deehirping theory, a new method is proposed for measuring relative delays in channels of the wideband digital army utilizing wideband LFM pulses. By using the FFT algorithm and some simple components, not only can this measurement method be easier to be implemented for computational efficiency, but also good measurement precision and real-time performance are achieved. At the same time, all relative delays among ehannels am enabled to be acquired in a measurement process. The performances of the proposed method am theoretically analysed and then some system parameters are determined. Finally, a further simplified t system is presented. The simulation results prove the effectiveness and efficiency of the pmposod method.
出处
《电讯技术》
北大核心
2010年第5期28-32,共5页
Telecommunication Engineering
基金
国家自然科学基金重点资助项目(60736045)~~
