High precision phase-domain radial velocity estimation for wideband radar systems  

作　　者：QI Wei CUI Zijian YAO Huisheng DENG Zhenmiao 

机构地区：[1]Beijing Institute of Tracking and Telecommunications Technology,Beijing 100094,China [2]School of Information Science and Technology,Xiamen University,Xiamen 210016,China

出　　处：《Journal of Systems Engineering and Electronics》2020年第3期520-526,共7页系统工程与电子技术（英文版）

基　　金：the National Natural Science Foundation of China(61471012).

摘　　要：Radial velocity estimation used in wide-band radar systems is investigated.By analyzing the signal of cross-correlation output of adjacent echoes,it is found that the frequency and phase of the cross-correlation output are related to the target’s radial velocity.Since the precision of the phase estimation is higher than that of the frequency,a phase-based velocity estimator is proposed.However,the ambiguity problem exists in the phase estimators,and thus the estimation of the cross-correlation of adjacent echoes(CCAE)is used to calculate the ambiguity number.The root-mean-square-error(RMSE)of the proposed estimator is derived.Simulation results show that the performance of the proposed method is better than that of the frequency-based estimator.

关 键 词：radial velocity estimation AMBIGUITY wideband radar system 

分 类 号：TN958[电子电信—信号与信息处理]