Bistatic Radar Using Space Based Illuminators
Webert Montlouis, PhD
Direct Signal Interference (DSI) suppression is a necessary step in any passive bistatic radar system. The ground-based bistatic radar suffers significantly from the direct signal interference because of the short baseline distance between the transmitter and the receiver. But, many other bistatic radar geometries minimize the impact of this physical constraint. Each configuration has its degree of difficulties and requires less or more complicated suppression algorithms for a successful implementation. In some configurations, the difference in power level between the target signal versus the direct path is not as large, therefore it is possible to use less complicated DSI techniques to pull the target signal from interference plus noise. One such bistatic geometry uses the satellite-based bistatic radar concept to perform surveillance in an area of interest close to the ground. In this presentation, we will discuss the performance of a DVB-S signal using a class of iterative algorithms Normalized Least Mean Squares (NLMS), Wiener, Recursive Least Squares (RLS), and Fast Block Least Mean Squares (FBLMS) to suppress the direct signal using a satellite-based transmitter and a ground-based receiver to perform surveillance.
Dr. Webert Montlouis is with Johns Hopkins University, Baltimore MD. He is a faculty in the ECE department and a Chief Scientist at the Applied Physics Lab.
Date and time:
Saturday, October 3, 2020
12:45 PM—2:30 PM