基于频谱校正的中国余数定理多普勒频率估计算法  

Doppler Frequency Estimation Method Based on Chinese Remainder Theorem with Spectrum Correction

作　　者：曹成虎 赵永波[1,2] 索之玲 庞晓娇 徐保庆[1] CAO Chenghu;ZHAO Yongbo;SUO Zhiling;PANG Xiaojiao;XU Baoqing(National Laboratory of Radar Signal Processing,Xidian University,Xi’an 710071,China;Collaboration Innovation Center of Information Sensing and Understanding,Xidian University,Xi’an 710071,China)

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,西安710071 [2]西安电子科技大学信息感知技术协同创新中心,西安710071

出　　处：《电子与信息学报》2019年第12期2903-2910,共8页Journal of Electronics & Information Technology

基　　金：高等学校学科创新引智计划(B18039)~~

摘　　要：脉冲多普勒(PD)雷达能够检测目标多普勒频率和有效抑制杂波,该优势使得PD雷达得到了广泛应用。但速度模糊的存在,往往对PD目标检测带来困难。该文紧密结合PD雷达体制的特点,在基于PD雷达参差重频模式下,提出一种基于全相位离散傅里叶变换(DFT)相位差频谱校正的最优余数封闭式鲁棒中国余数定理(CFRCRT)的多普勒频率估计算法。理论分析和仿真实验表明该文算法在测量精度和实时性能上可以满足工程上应用的需求。It makes the Pulse Doppler(PD)radar widely applied that the PD radar has the obvious advantages of detecting the Doppler frequency of the target and suppressing the clutter effectively.However,it is difficult for the PD radar to detect the target due to velocity ambiguity.Combining with the characteristic and staggerperiod model of the PD radar,a Doppler frequency estimation method based on all phase DFT Closed-Form Robust Chinese Remainder Theorem(CFRCRT)with spectrum correction is proposed.Both theoretical analysis and simulation experiment demonstrate that the proposed method can satisfy the engineering demand in measure accuracy and real-time performance.

关 键 词：脉冲多普勒雷达 多普勒频率估计 中国余数定理 频谱校正 

分 类 号：TN958[电子电信—信号与信息处理]