Problem in Parameter Automatic Pair of Multisignals Multiparameter Estimation Based on Uniform Circular-Shaped Antenna Array

A problem in an algorithm to estimate frequency and orientation of each arrival signal with uniform circular-shaped antenna array is introduced, and a resolvent of this problem is put forward in the paper. The algorithm quoted in this paper includes two methods: direct method and indirect method. As the precision of each arrival signals parameters estimated by direct method is not satisfied, an indirect method grounded on direct method is put forward to improve the precision mentioned above. But, when several single-frequency signals arriving at the same time, parameters of each signal estimated by indirect method cannot always be paired correctly, this paper explains the reason of that, and a method to solve this problem is introduced, the resolvent makes the indirect method more simple and credible than its preceding form.