南京大学学报（自然科学版）2017，Vol.53Issue(3)：434-440,7.DOI:10.13232/j.cnki.jnju.2017.03.008
双基地MIMO雷达多参数联合估计及目标三维定位
Multiple parameter estimation and three-dimensional localizationfor bistatic MIMO radar
摘要
Abstract
Bearing estimation and localization are important aspects in radar signal processing.Multiple-input multiple-output(MIMO)radar exploits multiple antennas to transmit diversity waveforms and exploits multiple antennas to receive the signal reflected from the targets simultaneously,which has wide application prospects.MIMO radar has many advantages,such as waveform diversity,spatial diversity,and polarization diversity,thereby dramatically improve the performances of radar systems over the conventional phased arrays.A novel joint multiple parameter estimation and three-dimensional localization method for bistatic MIMO radar system is proposed.After the eigenvalue decomposition of the array output covariance matrix,rotated factor which contain the receive angle can be obtained by construct selection matrices.Based on the estimation of signal parameter via rotation invariance technique(ESPRIT)like algorithm,the direction of arrival(DOA)can be achieved.Owing to the steering vectors which contain the transmit elevation angle and azimuth are coupled with each other,the phase mode excitation method is used to do decoupling.In addition,we estimate the transmit elevation angle and azimuth by the uniform circular array multiple signal classification(UCA-MUSIC)and uniform circular array ESPRIT(UCA-ESPRIT)algorithm respectively.Compared with UCA-MUSIC algorithm,UCA-ESPRIT provides DOA estimates in closed-form with relatively low computational effort.Finally,based on the estimated angles,the three-dimensional(3-D)coordinates of the targets are calculated.The estimate angles can be paired automatically,and avoid additional pairing procedure.For the targets in the same range cell,the proposed algorithm can identify clearly.Simulation results show that the proposed method has the high accuracy and low complexity.关键词
双基地MIMO雷达/均匀圆阵/目标定位/UCA-ESPRITKey words
bistatic MIMO radar/uniform circular array/localization/UCA-ESPRIT分类
信息技术与安全科学引用本文复制引用
陈浩,王琼..双基地MIMO雷达多参数联合估计及目标三维定位[J].南京大学学报（自然科学版）,2017,53(3):434-440,7.基金项目
毫米波国家重点实验室开放课题(K201514),江苏省普通高校研究生科研创新计划(KYZZ16_0053) （K201514）
