FY-2卫星的空间环境数据接收及警报系统

介绍了FY—2卫星探测数据的流通过程及接收处理．首先在FY-2卫星及探测器系统中，环境探测数据被收集、调制并发射，再由地基数据接收及解调系统将数据信号放大、解调还原并发送，最后由数据处理及警报系统将数据接收处理、保存显示，并对太阳质子事件、x耀斑进行自动电话报警．该系统是保障航天器安全和提高抗辐照水平的重要手段．

DATA RECEIVING AND ALERTING SYSTEM OF FY-2 SATELLITE

FY-2 satellite is a geosynchronous meteorological satellite which is produced and lunched by China. The satellite carries the spatial particle detector and the solar X-ray detector used for detection of solar proton-event in high energy particle environment. The whole data receiving and alerting system of FY-2 consists of three systems: the earth-based system of data receiving and demodulating, the system of data processing and alerting. At first, environment detection data are collected, modulated and transmitted in the onboard system of FY-2 and detectors. Then data signals are magnified, demodulated and sent into the earth-based system of data receiving and demodulating. At last, data is received, processed, stored, displayed and judged to make alarm automatically by telephone for solar proton-events and X-ray flare in the system of data processing and alerting. It is an important way for guaranteeing space vehicle's safety and enhancing antiradiation's level.