Simulation results show that the position error of the integrated navigation system is less than 15% (RMS) of goal error over long intervals, and even smaller in the area with evident anomaly gravity.

仿真结果表明：该组合导航系统长时间定位误差小于导航系统目标误差的15% (RMS)，在重力异常显著变化地区其定位误差将更小。

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An anomaly in the orbit of Mercury provided one of the first clues that the laws of gravity as described by Newton were incomplete, which, in turn, led Einstein to general relativity.

ECONOMIST: A space oddity