With GPS-based satellite tracking observation, comprehensive orbit solution and Satellite Laser Ranging( SLR), the precision of earthquake electromagnetism satellite orbiting can reach to centimeter grade.

• 地震电磁卫星拟采用星载GPS和综合轨道求解方法进行精密定轨,并辅之以人卫激光测距,其定轨的精度可达厘米级。