星载电场仪传感器设计与空间应用研究

Sensor design and space application research of spaceborne electric field instrument

详细介绍了星载空间电场探测仪球形传感器的物理设计原理,在此基础上对传感器球壳结构、球壳表面涂层结构、短杆结构等部分的工程设计进行了计算推导,并给出了各部分结构的设计参数。通过对传感器在力、热各试验工况下的性能比对测试表明,该传感器设计方案可行,结构设计可靠,满足空间飞行任务需求。卫星入轨后,空间电场探测仪球形传感器通过伸杆展开到位,并在轨对空间电场分布及变化进行了多次连续测量,分辨率在低频范围达到了1μV/m,灵敏度指标达到了0.1μV/mHz^(-1/2),动态范围为120 dB。

In this paper,the physical design principle of spherical sensor of space-borne electric field detector is introduced in detail.On this basis,the engineering design of spherical shell structure,spherical shell surface coating structure,short rod structure and so on are calculated and deduced,and the design parameters of each part are given.By comparing the performance of the sensor under various test conditions of force and heat,the results show that the design scheme of the sensor is feasible,the structure design is reliable and meets the requirements of space mission.The spherical sensor of the space electric field detector is in place through the extension rod after the satellite enters the orbit.The spatial electric field distribution and change are measured continuously many times in orbit.The resolution is 1μV/m,the sensitivity index is 0.1μV/mHz^(-1/2),and the dynamic range is 120 dB in the low frequency range.