Tracking multiple manoeuvering targets in a network of passive radars

Abstract

This paper addresses the problem of tracking multiple targets in a net of passive (angle only) 2D- of 3D-radar (azimuth or azimuth and elevation). No decentralised local bearing tracks are built, but measurements are fused on a central level. No signal or signal following information is used. We assume multiple coverage, high probability of detection and consider resolution conflicts of data and false alarms. A basic algorithm used to process asynchronous decentralised bearings is given. An algorithm for a full online tracking system with track initiation and deletion is described. Its central part is the global deghosting algorithm. It inherently works as the global (space/time) data for the track assignment algorithm. Simulation results of a dynamic scenario are given.