Energy direction finding method taking into account the curvature of the Earth and interference

Abstract

This paper presents a method using a two-position system to determine the spatial coordinates of a moving radiation source from one bearing measurement and relative energy measurements of the received signal taking into account the effect of its reflection from the Earth surface. The passive location problem is solved for low elevation angles taking into account the curvature of the Earth and using a polynomial model of source motion. An algorithm for the parametric identification of this model using a measurement sample of increasing size in a regularized formulation is developed, and the accuracy characteristics of the method are analyzed.