Contents I. Introduction
The problem under consideration is identification of the angles of plain waves using antenna array by means of passive location. During last decades there were published a number of papers on this subject. The main problem is still the detection of waves having similar directional angles, different magnitude and the same spectral band in the presence of heavy noise and during short time for observations. Under such conditions the simple method of synphase summation fails to solve the problem. It is necessary to use the methods for superresolution. The core of them are methods for detection of signals on a single supporting frequency. As opposite to the synphase summation method these are based on the tuning of parameters depending on given data. Therefore sometimes they are called adaptive methods of passive location.
