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首页> 外文会议>International astronautical congress >Prediction of the Microvibration from Ground Test and Its In-orbit Evaluation of the Geostationary Meteorological Satellite 'Himawari-8'
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Prediction of the Microvibration from Ground Test and Its In-orbit Evaluation of the Geostationary Meteorological Satellite 'Himawari-8'

机译：地面测试对微振动的预测及其对地静止气象卫星“ Himawari-8”的在轨评估

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The geostationary meteorological satellite, Himawari-8, was launched in October 2014. The Advanced Himawari Imager (AHI) is installed on the satellite and is the most advanced imager up to date. The observation frequency and resolution of the AHI are much higher than these of its predecessor, the Himawari-7. Specifically, the image resolution of the AHI is twice as high. In order for the Himawari-8 to achieve high image resolution, high pointing accuracy is required. One of the greatest obstacles to achieve high pointing accuracy is microvibration, which is induced by the dozens of the disturbance sources inside the satellite; examples include reaction wheels, mechanical gyros, and coolers. In order to satisfy the requirement, an evaluation of the influence of microvibration before launch is necessary. Similar to other high precise observation satellites, the microvibration test for the Himawari-8, was conducted in the final development phase. In the ground test, the microvibration of the AHI mounting surface, was measured by the accelerometers and angular rate sensor with the disturbance sources individually actuated. The in-orbit vibration level of the optical bench was estimated based on the data. After launch, the microvibration was measured by the same sensors in orbit and the validity of the ground test estimation was evaluated by a comparison of both datasets. This paper presents the overview of the Himawari-8 and -9, the method used for the microvibration test, and the comparison of the results of the microvibration estimations based on the ground test and the measurement data in orbit. In addition, the results of the comparison between the design standards of the ESA and JAXA, the microvibration level of Himawari-8, are described.
机译：地球静止气象卫星Himawari-8于2014年10月发射。卫星上安装了先进的Himawari成像仪（AHI），是迄今为止最先进的成像仪。 AHI的观测频率和分辨率远高于其前身Himawari-7。具体而言，AHI的图像分辨率是其两倍。为了使Himawari-8获得高图像分辨率，需要高指向精度。实现高指向精度的最大障碍之一是微振动，它是由卫星内部的数十种干扰源引起的。示例包括反作用轮，机械陀螺仪和冷却器。为了满足该要求，有必要在发射前对微振动的影响进行评估。与其他高精度观测卫星类似，在最终开发阶段对Himawari-8进行了微振动测试。在地面测试中，AHI安装表面的微振动是通过加速度计和角速率传感器测量的，其中干扰源是单独驱动的。根据这些数据估算了光具座的在轨振动水平。发射后，通过轨道上的相同传感器测量微振动，并通过比较两个数据集评估地面测试估计的有效性。本文介绍了Himawari-8和-9的概况，用于微振动测试的方法，以及基于地面测试和在轨测量数据的微振动估计结果的比较。此外，还介绍了ESA和JAXA的设计标准（即Himawari-8的微振动水平）之间的比较结果。

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