箭载双臂式电场仪的原理与设计  

The Theory and Design of the Rocket-borne Two Booms Electric Field Instrument

作　　者：满峰[1] 刘波[2] 姜秀杰[2] 罗福山[2] 于世强[2] 

机构地区：[1]中国科学院西安光学精密机械研究所,西安710119 [2]中国科学院空间科学与应用研究中心,北京100190

出　　处：《光子学报》2010年第6期982-987,共6页Acta Photonica Sinica

基　　金：国家高技术研究发展计划(863计划)项目

摘　　要：在介绍双臂式电场仪探测原理的基础上,给出了子午工程探空火箭搭载的双臂式电场仪的具体设计.为了降低探针的不对称和不一致性,采用了铝制球形探针设计,使用石墨涂层以减少表面不均匀性,并采用独特的外形设计来消除支撑臂阴影影响;在信号处理部分,为了能提高系统动态范围,采用了分频段处理的方法.最后,结合整体系统设计的需要提出了几点误差考虑,并给出了系统性能测试结果.所设计的电场仪带宽0～5MHz,直流探测范围为0.1mV/m～±1V/m,交流探测范围为10μV/m～50mV/m,可以实现对电场强度为0～±1V/m的空间电场进行二维测量.Based on the analysis of detection theory of two booms electric field instrument, the detailed design of the electric field instrument boarded on sounding rocket which is used in Meridian Project is presented. In order to reduce asymmetries and inconsistencies of the probe, aluminous spherical probe is adopted. The graphite coating is chosen to reduce the surface non-uniformity, and the particular shape design is used to eliminate the shadow effect of the boom. In order to improve the system dynamic range, four frequency ranges is selected, providing a set of analog signals subsequently directed to the data digitization and processing unit. Finally, several error considerations and the test results of system performance are presented. The bandwidth of this electric field instrument is 0-5MHz. The DC detection range is 0. 1mV/m-± 1V/m and the AC detection range is 10μV/m- 50mV/m. The two dimensional spatial electric field with intensity of 0-±1V/m can be measured.

关 键 词：电场仪 探空火箭 空间电场 电场测量 

分 类 号：O242.21[理学—计算数学]