Radio bearing of sources with directional antennas in urban environment

TL;DR

This study evaluates how antenna parameters affect radio source bearing accuracy in urban environments, using simulations based on a multi-elliptical propagation model to improve source localization.

Contribution

It introduces a simulation-based assessment method for bearing errors considering antenna parameters and urban propagation effects, aiding in practical correction techniques.

Findings

Antenna beamwidth influences bearing accuracy in NLOS conditions.

Simulation results show the impact of antenna orientation on angle of arrival.

Method enables improved radio source localization in urban areas.

Abstract

This paper focuses on assessing the limitations in the direction-finding process of radio sources with directional antennas in an urbanized environment, demonstrating how signal source antenna parameters, such as beamwidth and maximum radiation direction affect bearing accuracy in non-line-of-sight (NLOS) conditions. These evaluations are based on simulation studies, which use measurement-tested signal processing procedures. These procedures are based on a multi-elliptical propagation model, the geometry of which is related to the environment by the power delay profile or spectrum. The probability density function of the angle of arrival for different parameters of the transmitting antenna is the simulation result. This characteristic allows assessing the effect of the signal source antenna parameters on bearing error. The obtained results are the basis for practical correction bearing error and these show the possibility of improving the efficiency of the radio source location in the urbanized environment.