Resource Allocation for Multiple Target Tracking in Active and Passive Radar Network

Abstract

A joint beam selection and power allocation (JBSPA) scheme is proposed for multiple target tracking (MTT) in active and passive radar network. The motivation of JBSPA is to exploit not only the degrees of freedom of power for active radars but also the degrees of freedom of receive beams for passive radars, thereby improving the overall tracking accuracy of multiple targets. The predictive Posterior Cramér-Rao lower bound is utilized to evaluate the impact of each allocation strategy on tracking performance, and then the JBSPA scheme is formulated as a mixed integer nonlinear program problem. To solve the formulation efficiently, an alternating direction method of multipliers is developed for an optimum. Numerical results demonstrate that the JBSPA scheme can achieve a significant improvement of the overall MTT accuracy, compared with conventional uniform allocation.