摘要
基于正交频分复用技术的多载频相位编码信号具有良好的抗干扰性能、较高的频谱利用率和易于数字化处理等诸多优点,近年来备受关注。本文提出了一种基于MCPC信号的目标速度估计新方法,其核心思想是利用各子载频的粗距离像进行脉冲多普勒处理,然后通过最小二乘算法得到目标的无模糊速度。仿真分析表明,即便是高速目标情况下,该方法也能够在信噪比不高的情况下有效估计目标速度,同时获得不模糊测速和距离高分辨性能。
The MCPC signal using Orthogonal Frequency-Division Multiplexing （OFDM） structure has carught much attention of researchers recently since it has good anti-jamming capability, high spectrum efficiency and simple digital processing. A new method for target velocity estimation of MCPC signal is presented, the core concept is using Pulse-Doppler processing of subcarriers＇ s coarse range profile, and then the true velocity can be obtained through LS （Lesat-Squared） algorithm. The simulation results show that even for the high-speed target the method can estimate the velocity efficiently while the SNR is not high. It can achieve the true velocity unambiguously as well as high range resolution performance.
出处
《信号处理》
CSCD
北大核心
2010年第5期753-758,共6页
Journal of Signal Processing
