实值化的修正传播算子测向算法

Estimation algorithm for real-valued direction of arrival based on modified propagator method

针对修正传播算子测向算法运算量大的问题,提出了实值化的修正传播算子算法。本算法利用酉变换将修正的传播算子变换成实矩阵,通过实值化的谱峰搜索取得了降低运算量的效果,并且保持了与修正传播算子算法一致的测向性能。最后,通过仿真比较了实值化的修正传播算子算法、修正传播算子算法、传播算子算法及多重信号分类算法的性能,验证了本算法在运算量和测向性能方面的优越性。

The real-valued modified propagator method was proposed to solve the large computational load problem of modified propagator direction of arrival estimation method. This proposed method employed the unitary transformation to rearrange the propagator to be real matrix, which decreased the computational load through the real-valued spectrum peak scanning. And it remained the same estimation performance with modified propagator method. At last, the simulation results confirm that the proposed algorithm can achieve superior estimation precision with lower computational load, compared with modified propagator method, propagator method and multiple signal classification method.