测量航天器的绝对非重力加速度：目标、装置、方法、性能
Measuring the absolute non-gravitational acceleration of a spacecraft: goals, devices, methods, performances
摘要：
太空提供了测试引力的独特机会。通过使用行星际航天器作为测试质量，有可能在太阳系距离尺度上测试广义相对论。这就需要精确计算航天器的轨迹，这一过程依赖于无线电跟踪，并受到航天器非重力加速度不确定性的限制。重力高级包（GAP）旨在测量无偏差的非重力加速度。它由一个静电加速度计和一个旋转平台组成。本文介绍了仪器及其性能，并描述了无偏测量的方法。最后简要介绍了该仪器在轨道重建方面的改进。
英文摘要：
Space provides unique opportunities to test gravitation. By using an interplanetary spacecraft as a test mass, it is possible to test General Relativity at the Solar System distance scale. This requires to compute accurately the trajectory of the spacecraft, a process which relies on radio tracking and is limited by the uncertainty on the spacecraft non-gravitational acceleration. The Gravity Advanced Package (GAP) is designed to measure the non-gravitational acceleration without bias. It is composed of an electrostatic accelerometer supplemented by a rotating stage. This article presents the instrument and its performances, and describes the method to make unbiased measurements. Finally, it addresses briefly the improvement brought by the instrument as far as orbit reconstruction is concerned.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
