摘要
本文设计了一种新的多载波线性调频(LFM)雷达波形,使得相邻载波间采用了极性相反的调频率来保证子载波间良好的正交性。基于这种多载波雷达波形,分析了静止目标和运动目标的回波处理方法以及其中的一些关键问题。最后,利用各子载波与多普勒频移间的特殊关系,提出了基于子载波初次估计和最小熵值法二次估计的联合速度估计方法。通过理论分析和仿真实验证明该方法运算量少,灵活简单,具有一定的稳健性。
In the paper, the proposed muhicarrier radar waveform which alternates the direction of frequency sweep be- tween successive LFM signals has excellent orthogonality. Then the processing of the muhicarrier waveform echo when the target is still or moving are detailed discussed as well as some key problem. Based on the preliminary velocity estimation by the especial relationship between subcarrier and Doppler shift and the minimum entropy estimation, the combining velocity compensation method is advanced. The simulation results and performance analysis show that method has fewer computation load and the stability.
出处
《信号处理》
CSCD
北大核心
2014年第1期22-29,共8页
Journal of Signal Processing
基金
国家自然科学基金(61271451)
空装研究生创新基金(KJ2010199)
院科研创新研究基金(X11ZD202)资助
