Translational Invariant Bistatic SAR Based on Tower Crane: Experiments and Results

Abstract

Compared with monostatic Synthetic Aperture Radar (SAR) systems, bistatic SAR systems own obvious advantages, and have attracted more and more attentions from academe. A number of experiments with various configurations and platforms have verified the application potential of bistatic SAR. However, the bistatic SAR system is far more complicated than monostatic one, which means more non-ideal factors may be encountered during bistatic SAR experiments, such as motion deviation of receiver and transmitter platforms. To keep the motion state of the receiver and transmitter stable and simplify the process of implementing bistatic SAR experiments, we employ a translational invariant bistatic SAR system whose transmitter and receiver are suspended on the arm of a tower crane. In this case the transmitter and the receiver can only move along the arm of the tower crane, which makes it more convenient to control the motion state of receiver and transmitter. With the translational invariant bistatic SAR system based on a tower crane, we conducted real-scene experiments in Lianyungang, Jiangsu Province, China and some meaningful imaging results are obtained.