Eastern-European Journal of Enterprise Technologies
Abstract:
The analysis of methods for estimation of the signals direction of arrival based on the analysis of the directional characteristics of the antenna array according to the criterion of maximum and minimum level of the incoming signal is conducted. It is shown that the minimum methods are more accurate in comparison to the maximum methods. Considering the direct functional connection of the amplitude-amplitude-phase distribution of signals over the array elements with the value of signals direction of arrival, the technique allowing estimation of the field distribution vector together with an estimate of the array weight vector, which showed the computational complexity of the procedure, is presented. A number of superresolution techniques have been analyzed. The results of methods modeling with numerical estimates of resolution have shown that the resolution of these methods allows their implementation in the problems of space-time access under strictly limited conditions. The analysis of the signal arrival estimation algorithm using the sum-differential directional pattern with the definition of the direction finding by means of the equisignal zone is conducted. It is shown that this method seems to be one of the most constructive and applicable to the problems of space-time access.
