美国正在研究用照相机和由卫星反射回的激光束测量地球表面上的长距离,最终可能测得地球大陆漂移的速度。由八个国家参加的国际卫星测地实验的第一个观察阶段将继续进行至7月份。该实验由法国国家空间研究中心主持,包括七个卫星以及遍及世界的30个观察站。据俄亥俄州立大学大地测量系的米勒 The United States is studying the possibility of measuring the long distances on Earth’s surface with cameras and laser beams reflected back by satellites, eventually measuring the speed of Earth’s continental drift. The first observation phase of an international satellite geodesic experiment involving eight countries will continue until July. The experiment, moderated by the French National Space Research Center, includes seven satellites and 30 observation stations throughout the world. According to Miller, Department of Geodesy, Ohio State University