【作者】 申文杰； 占志晟； 王彦平； 林赟； 李洋； 白泽朝； 徐学永；

【Author】 SHEN Wenjie;ZHAN Zhisheng;WANG Yanping;LIN Yun;LI Yang;BAI Zechao;XU Xueyong;School of Artificial Intelligence and Computer Science, North China University of Technology;North Information Control Research Institute Group Limited;

【机构】 北方工业大学人工智能与计算机学院； 北方信息控制研究院集团有限公司；

【摘要】 地基合成孔径雷达的不断发展,催生了多种模式,针对地基合成孔径雷达发展而来的直线地基合成孔径雷达(LRSAR)与圆弧式合成孔径雷达(Arc SAR)在形变监测中的性能差异进行了对比研究。两个系统采样相同的基本参数,设计完成了三组角反射器形变监测实验。通过采集重轨数据,对其沿距离-方位二维FFT成像,经共轭相乘后提取目标点索引得到目标相位差再计算形变量。实验结果表明,LRSAR系统在零方位角条件下的近距离测量精度更高,在远距离情况下Arc SAR系统表现出更好的误差稳定性,而LRSAR系统在非零方位角下表现出更好的误差稳定性且具有更强的适应能力。该研究可为不同应用场景下的SAR系统选型与优化提供参考依据。更多还原

【Abstract】 With the continuous development of ground-based synthetic aperture radar(SAR), a variety of modes have been spawned, this paper presents a comparative study of the performance differences between linear ground based synthetic aperture radar(LRSAR), which has been developed from ground-based SAR, and arc synthetic aperture radar(ArcSAR) in deformation monitoring. The two systems sample the same basic parameters, and three sets of angle reflector deformation monitoring experiments are designed and completed. By collecting the heavy rail data and imaging along the distance-azimuth two-dimensional FFT, the target point index is extracted after conjugate phase multiplication to get the target phase difference and then calculate the deformation. The experimental results show that the LRSAR system has higher near-range measurement accuracy under zero-azimuth conditions, the ArcSAR system shows better error stability under long-range conditions, and the LRSAR system shows better error stability under non-zero-azimuth conditions with stronger adaptive capability. The research in this paper can provide a reference basis for the selection and optimization of SAR systems under different application scenarios.更多还原