Abstract
An amplitude method for determining the radiation sources coordinates in passive radar isconsidered. An algorithm for calculating the coordinates of radiation sources in the passive modeof radar stations based on the reception of electromagnetic oscillations regularly damped in spaceby antennas in a collinear arrangement is synthesized. The mathematical relationships necessaryto determine the coordinates of the target are obtained by solving the corresponding trianglesformed by the antenna bases and the target. This made it possible to determine the location of theradiation source (target) by the point of intersection of the hyperbolas with the foci at the locationsof the receiving antennas. Analytical expressions are given for determining the coordinatesof targets in Cartesian and polar coordinate systems. The error analysis of the proposed algorithmwas carried out taking into account the method of indirect measurements. The case of uniformdistribution of noise over space, additively related to the signal and uncorrelated with it, is investigated.The formula for the root-mean-square deviation of the target range is obtained. The resultsof calculations of estimates of the absolute errors in determining the location of the radiationsource, which depend on its location on the plane and show that the absolute error in determiningthe location of the radiation source, is minimal near the origin and increases with distance from it,are presented. Synthesized and investigated algorithm, due to the simplicity of the hardware implementation,can be used in passive location systems both independently and in addition to thewidely used differential rangefinder method based on measuring the mutual time delays of thereceived signals.
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