【摘要】 1990年5月,用2台WM—101接收机在北京市布测地铁GPS控制网(10点)。利用PoPS2.02版软件和精密参数处理后,点位中误差为±3.5mm;与5个已知地面点坐标比较,坐标平均差值为⊿x=2.0mm、⊿y=28.0mm;用T2000+DI5检测可通视的5条边,平均差值为3.0mm。更多还原

【Abstract】 In May, 1990, two WM-101 receiver were used to lay down GPS control network(10 points) for Beijing Railway. The mean square error of point is 3.5mm after processing with software PoPS ver. 2.02 and accurate parameters, To compare with 5 points whose ground coodinates areknown dx is 2.0mm, and dy, 28.0mm. The average difference value is 3.0mm when T2000+DI5 is used to check the 5 visible sides.更多还原