Satellite-Based Bistatic Radar in Presence of Jammers

Passive Bistatic radar is an effective and low-cost approach to surveillance in an area of interest. In many bistatic radar configurations, the impact of the Direct Signal Interference (DSI) is minimized by the physical locations of the transmitter and the receiver on the bistatic plane. In the satellite-based bistatic radar, the bistatic baseline is comparable to the distance from the transmitter to the target of interest; as such, the signal from the transmitter no longer dominates at the receiver. A feature that minimizes the computational complexity of the necessary algorithms to suppress DSI. Although the bistatic radar system is passive, it is susceptible to jamming when spotted. Interferers can affect the operation of a bistatic system if not adequately addressed. The existence of jammers in a bistatic environment can have a destructive effect on the surveillance channel. In specific radar modes, like track initiation and track maintenance, the Minimum Variance Distrotionless Response (MVDR) offers many advantages as it seeks to maximize power in the look direction. In this paper, we evaluate the performance of the combination of the MVDR and adaptive nulling in a satellite-based bistatic radar and Normalized Least Mean Square (NLMS) as a DSI canceller in a jamming environment.