Analysis of the Potential Precision of Measurement of Angular Coordinate

Abstract

A comparative analysis of the potential precision of measurements of the angular coordinate of a radar target in discrete and linear scanning of an antenna beam is performed. A formula for determining the variance of an estimate of the angular coordinate based on the likelihood function for two positions of the antenna beam and the Kramer–Rao expression is obtained. An approximation of the form of the antenna directional pattern is proposed. Based on the results of the calculations, it is established that the precision of a measurement of the angular coordinate is higher in discrete scanning than in linear scanning.