Information Analysis in Passive Radar Networks for Target Tracking

In this paper, the amount of information that can be extracted from a passive radar network is analyzed based on Fisher information. The study aims to present a measure of performance for target tracking with respect to varying sensor numbers and geometry. Adequate number and geometry of receivers for different locations of "illuminators of opportunity" have been proposed to achieve an estimated target state with predetermined level of error. Additionally, tracking zones where tracking error can be sustained below a predetermined level have been established. Obtained results could prove useful while designing a passive radar network based on tracking accuracy requirements.