Design Of Test System Of FY-2 (Fengyun-â…¡) Satellite Space Environment Monitor

This thesis describes the test system of FY-2 (Fengyun-â…¡) satellite space environment monitor for purpose, meaning, structure, principles and implementation of the hardware and software parts. Thesis introduce the designed purpose, working principle and characteristics of the space environment monitor. Tests are needed during the whole research and development process of space environment monitor. The test system is the necessary equipment and can support the research, development, testing, debugging, calibration process. It is significant for detection of hardware and software functions, monitoring the working condition in single device and integrated satellite system status, ensuring its working normally. The test system has three major components: hardware, lowercomputer software and PC software. The hardware system consists of several modules such as data acquisition, pulse height analysis, data transmission, master control and power modules. It can analyze the output pulse height of the Sun X-rays, high energy electron, proton, heavy ion, transmit data and simulate satellite platform under the control of lowercomputer software. Data transmission and master control use USB 2.0 and FPGA solutions. The original output of the pulse signal can convert into digital signal, after amplification, peak holding and analog-to-digital convert, witch can be stored and processed by computer directly, using Altera's Cyclone and Cypress's EZ-USB FX2 and other chips. 65536-channel energy spectrum information can be derived from pulse signals with 100kHz characteristic frequency and 0.5?s characteristic width. Due to higher resolution, electromagnetic compatibility is considered during circuit design, to avoid noise interference. PC software has several functions such as counting energy channels, real-time displaying and saving. The operator can easily read and accurate scientific and engineering parameters, and then analyzes the characteristic parameters of space environment monitor. Lowercomputer and PC software can be modified according to the testing requirement. The test system has many advantage such as high speed, high energy channel resolution, high reliability, high extendibility and low cost.