A new algorithm for multiple targets tracking in bistatic radar system

Abstract

This paper presents an algorithm for multiple targets tracking. The bistatic radar system proposed in the paper contains a T/R station and a R station. Generally the T/R station provides data such as azimuth angle and distance of a target while the R station has measurement of azimuth angle and distance sum of the target. After coordinate conversion and target locating the measurement data is converted into 3-D coordinate position of the target. In order to track multi-targets it is important to select data association method. In the paper according to conditions of real-time system we accomplish multiple targets tracking in two stages. In the first stage the locating data of a target is used to do association with every target data stored in last tracking cycle. It is necessary to finish this stage as soon as we get the target's locating data due to the demand of real-time system. However association error sometimes happens in stage one. Therefore we decide to test the association result of stage one. When R station passes the observation field in every cycle, the second tracking stage begins so as to correct the association result of stage one. It has proved that the performance of T/R-R system m multiple targets tracking is greatly improved because of the new tracking algorithm discussed in this paper.