“海洋二号”卫星主动段、自由飞行段力学环境测量与分析

力学环境测量系统首次搭载于“海洋二号”遥感卫星并开展了卫星在轨动力学环境的测量。文章主要介绍了利用该测量系统对主动段和自由飞行段卫星关键设备和关键部位动力学环境的测量情况，包括主动段卫星振动响应及其结构传递，自由飞行段卫星活动部件工作引起的微振动以及传递到光学敏感器上的微振动响应等；根据测量结果进行了力学响应分析。由于是首次开展在轨动力学环境的测量，所以获得的结果非常宝贵，对于完善、修正卫星分析模型具有重要的价值，可为卫星地面力学试验条件的确定提供参考依据。

In-situ measurement and analysis of mechanical environment on HY-2 satellite

The mechanical environment measurement system,loaded on HY-2 satellite firstly,is to obtain the mechanical environment of the spacecraft during launch flight and in orbit.The mechanical environment parameters of the key equipment and the key parts of the spacecraft can be used to analyze the mechanical response of the whole launching process for the spacecraft and the vibration energy passing in the spacecraft structure.In this paper,the mechanical environment measurement system is introduced,and the measurement results are discussed.These results can serve as the references to improve the simulation model and the ground mechanical experiment.