摘要
利用高分辨率SAR监测公路与铁路上运动载体成为目前的研究热点。根据SAR成像原理和多普勒效应,推导了雷达影像计算运动载体速度的方法。详细分析了车辆载体的速度与方位向偏移量之间的关系,用TerraSAR-X卫星中国地区的影像数据,获取了多个不同运动方向火车的速度,并进行了精度估算。
Studying on monitoring moving target on the railway by high resolution SAR comes to be popular. Basing on the SAR imaging principle and the Doppler effect, this paper derived the simplified equation of computing the moving-target＇ s velocity by radar image. The relationship between the moving-target＇ s velocity and the offset in azimuth was analyzed. And the speed of trains of different motion direction were calculated with Ter- raSAR-X data in China. Then, the precision of this speed was estimated.
出处
《测绘地理信息》
2013年第5期45-48,共4页
Journal of Geomatics
基金
国家自然科学基金资助项目(41274048)
