摘要
该文提出了一种基于平行因子分析的双基地MIMO雷达发射角、接收角及多普勒频率的联合估计算法。推导了SweilingII目标模型下的接收信号表示式,表明它具有三面阵模型特性。分析了该模型分解的唯一性,并从三线性最小二乘迭代得到的矩阵中完成参数估计。该算法充分利用接收端输出的所有信息,且每次迭代具有精确的最小二乘闭式解,消除了多次特征分解的误差积累,因此提高了估计精度。同时能够实现自动配对,降低了运算量。仿真试验验证了理论分析的有效性。
A new algorithm to jointly estimate the DOD-DOA and Doppler frequency of bistatic MIMO radar is proposed based on the parallel factor.The receiver signal expression is derived under SweilingII target model,which shows it has three-way array model characteristics.Therefore,the uniqueness of the low-rank three-way array model decomposition is analysed.And the three parameters are jointly estimated from three matrices that are obtained from the low-rank decomposition.The new algorithm uses all of the received data and eliminates the error propagation of the several eigen decompositions because each iteration possesses a typical least square problem with a unique closed solution.Hence the estimation accuracy is increased.Furthermore,the estimated parameters are automatically paired without the additional pairing method,which the computational complexity of the proposed algorithm is reduced.Finally,simulation results are presented to verify the effectiveness of the proposed method.
出处
《电子与信息学报》
EI
CSCD
北大核心
2010年第8期1843-1848,共6页
Journal of Electronics & Information Technology
关键词
双基地MIMO雷达
收发角度
多普勒频率
平行因子分析
三线性最小二乘
Bistatic MIMO radar
Direction Of Arrival-Direction Of Departure （DOA-DOD）
Doppler frequency
PARAllel FACtor （PARAFAC）
Trilinear Alternating Least Squares （TALS）
