High resolution range profile analysis based on multicarrier phase-coded waveforms of OFDM radar  

作　　者：Kai Huo Bin Deng Yongxiang Liu Weidong Jiang Junjie Mao 

机构地区：[1]Institute of Space Electronic Technology,School of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,P.R.China

出　　处：《Journal of Systems Engineering and Electronics》2011年第3期421-427,共7页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China (60872134;61072117)

摘　　要：Orthogonal frequency division multiplexing（OFDM） radar with multicarrier phase-coded waveforms has been recently introduced to achieve high range resolution.The conventional method for obtaining the high resolution range profile（HRRP） is based on matched filters.A method of synthesizing HRRP based on the fast Fourier transform（FFT） and decoding is proposed.The mathematical expressions of HRRP are derived by assuming an elementary scenario of point-scattering targets.Based on the characteristic of OFDM multicarrier signals,it mainly analyzes the influence on HRRP exerted by several factors,such as velocity compensation errors,the sampling frequency offset,and so on.The conclusions are significant for the design of the OFDM imaging radar.Finally,the simulation results demonstrate the validity of the conclusions.Orthogonal frequency division multiplexing（OFDM） radar with multicarrier phase-coded waveforms has been recently introduced to achieve high range resolution.The conventional method for obtaining the high resolution range profile（HRRP） is based on matched filters.A method of synthesizing HRRP based on the fast Fourier transform（FFT） and decoding is proposed.The mathematical expressions of HRRP are derived by assuming an elementary scenario of point-scattering targets.Based on the characteristic of OFDM multicarrier signals,it mainly analyzes the influence on HRRP exerted by several factors,such as velocity compensation errors,the sampling frequency offset,and so on.The conclusions are significant for the design of the OFDM imaging radar.Finally,the simulation results demonstrate the validity of the conclusions.

关 键 词：orthogonal frequency division multiplexing（OFDM） high resolution range profile（HRRP） MULTICARRIER phase-coded frequency offset. 

分 类 号：TN957.52[电子电信—信号与信息处理] TN911.6[电子电信—信息与通信工程]