High resolution direction finding method with broad band FFT sensors

摘要

A high resolution beam forming procedure adaptively minimises the required computer power for multiple and single wave input by stepwise analysis of the FFT (Fast Fourier Transform) channel covariance matrix eigenvalue distribution to choose a multiple and a single wave algorithm from different algorithms with very different computer load and power profile. The procedure divides several parallel broadband signals into narrowband FFT (Fast Fourier Transform) channels before calculation of the covariance matrix.