论文部分内容阅读
针对MUSIC算法在进行信号波达方向(DOA)估计时谱峰搜索运算量大的问题,提出了一种基于FFT多波束算法与MUSIC算法的联合DOA估计方法。该方法采用FFT多波束算法形成多个波束,近似估计信号DOA,获得对应波束指向,再利用MUSIC算法实现对信号DOA的精确估计。这样就只需在该波束指向对应的空域范围内搜索,减小了DOA估计的运算量。
In order to solve the problem of large amount of spectral peak search in DOA estimation of MUSIC algorithm, a joint DOA estimation method based on FFT multi-beam algorithm and MUSIC algorithm is proposed. The method uses FFT multi-beam algorithm to form multiple beams, approximates the signal DOA, obtains the corresponding beam direction, and then uses the MUSIC algorithm to realize the accurate estimation of the signal DOA. In this way, it is only necessary to search within the corresponding airspace range of the beam to reduce the amount of calculation of the DOA estimation.