摘要
该文提出了一种新的双基地MIMO雷达目标定位和多普勒频率估计方法。该方法利用矩阵的双正交性构造合理的代价函数,通过迭代求解代价函数和系统化的多阶段分解依次估计每个目标的2维方位角和多普勒频率。仿真结果表明,与基于ESPRIT的方法相比,该文方法能够估计目标的多普勒频率,消除了雷达发射信号不满足理想正交对目标定位精度的影响并且在发射和接收阵列不具备平移不变结构的条件下仍具适用性。
This paper presents a novel method for target localization and Doppler frequency estimation in bistatic MIMO radar. By utilizing the biorthogonality of matrices,a reasonable cost function is constructed. Via iteratively solving the cost function and a systematical multistage decomposition process,the two-dimensional angles and Doppler frequency of each target are estimated in turn. Simulation results demonstrate that compared with the ESPRIT based methods,this new method has the Doppler estimation capability,can eliminate the effect of the transmitted waveforms on target localization and is applicable to sensor arrays without an invariance structure.
出处
《电子与信息学报》
EI
CSCD
北大核心
2010年第9期2167-2171,共5页
Journal of Electronics & Information Technology
基金
国家自然科学基金(60672128)资助课题
关键词
MIMO雷达
双基地
多阶段分解
迭代算法
循环最小化
MIMO radar
Bistatic
Multistage decomposition
Iterative algorithm
Cyclic minimization
