A method of clutter-eliminating based on In-SAR imaging measurement

Abstract

A method is presented for eliminating the clutter such as background, multipath clutter and so on. As we know, target’s altitude can be obtained based on In-SAR imaging theory with two receiving-antennas at different height. According to the altitudes difference between the target and the background, the echo signal can be decomposed into two parts, one is from the measured target area, and the other one is from the background area. Therefore, a system of linear equation in two unknowns comes into being based on the two receiving-antennas’ echo signals, and the clutter from the background can be eliminated by solving the equation efficiently. Both theoretical simulation and experimental results validate the correctness and feasibility of the technology.