静电加速度计测量的偏置抑制的实验验证
Experimental demonstration of bias rejection from electrostatic accelerometer measurements
摘要：
为了在太阳系中进行引力实验，需要提高行星际航天器的轨道恢复能力。在航天器上增加一个加速度计是实现这一目标的重要一步，因为该仪器测量航天器的非重力加速度。它必须能够在低频率下进行无偏测量，以提供额外的感兴趣的观测。由于静电加速度计存在偏差，Onera提出了技术升级方案。它包括向静电加速度计添加旋转平台，该旋转平台允许调制感兴趣的信号并在后处理后无偏置地检索它。利用这一原理，已经开发了测量方法和后处理方法。本文的目的是通过实验验证这些方法。为此，使用水平控制摆将已知信号施加到安装在旋转平台上的加速度计。实验数据的处理证明了无偏加速度测量的能力。此外，后处理后获得的无偏加速度的实验精度对应于理论预测的精度。
英文摘要：
In order to test gravitation in the Solar System, it is necessary to improve the orbit restitution of interplanetary spacecrafts. The addition of an accelerometer on board is a major step toward this goal because this instrument measures the non-gravitational acceleration of the spacecraft. It must be able to perform measurements at low frequencies with no bias to provide an additional observable of interest. Since electrostatic accelerometers suffer a bias, a technological upgrade has been proposed by Onera. It consists in adding to an electrostatic accelerometer a rotating platform which allows modulating the signal of interest and retrieving it without bias after post-processing. Using this principle, a measurement method and a post-processing method have been developed. The objective of this article is to validate these methods experimentally. To do so, a horizontally controlled pendulum was used to apply a known signal to an accelerometer mounted on a rotating platform. The processing of the experimental data demonstrates the ability to make acceleration measurements with no bias. In addition, the experimental precision on the unbiased acceleration obtained after post-processing corresponds to the precision predicted theoretically.
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。
