电子学报2018，Vol.46Issue(6)：1496-1502,7.DOI:10.3969/j.issn.0372-2112.2018.06.032
基于频率轴反转的机动目标距离徙动补偿方法
Range Migration Compensation Method for Maneuvering Target Based on Frequency Axis Reversal
摘要
Abstract
The integration and detection performance for the maneuvering targets may slide down due to the defo-cusing effects of the range migration and the Doppler frequency migration in the long integration time. To address these is-sues,we propose a fast non-searching method based on frequency axis reversal and generalized autocorrelation function. In this algorithm,the frequency axis reversal transform is applied to correct the range migration in the range frequency do-main. Then the received signal becomes cubic phase signal and both generalized autocorrelation function and generalized scaled Fourier transform ( GSCFT) are applied to finish the signal reduction and the estimation of the moving target. Final-ly,estimated parameters are employed to dechirp the echo and the target is well focused in the range-Doppler domain. Compared with the existing methods such as Keystone,GRFT ( Generalized Radon Fourier Transform) ,RLVD ( Radon-Lv’s Distribution) and RFRFT (Radon Fractional Fourier Transform),the presented algorithm can fast eliminate the range migration and obtain the motion parameters without any searching procedure and can achieve a good balance be-tween the computational cost and the detection ability. Several simulation experiments are provided to demonstrate the ef-fectiveness of the proposed algorithm.关键词
机动目标检测/运动参数估计/立方相位信号/频率轴反转变换Key words
maneuvering target detection/motion parameters estimation/cubic phase signal/frequency axis reversal trans-form分类
信息技术与安全科学引用本文复制引用
贺雄鹏,廖桂生,许京伟,魏嘉琪..基于频率轴反转的机动目标距离徙动补偿方法[J].电子学报,2018,46(6):1496-1502,7.基金项目
国家自然科学基金(No.61231017,No.61601339) （No.61231017,No.61601339）
中国博士后科学基金(No.2016M590925) （No.2016M590925）
