The thesis is based on the subproject of national " 973 " key project , " hxmt spacecraft integral analysis and design " . aiming at the satellite power system , it establishes a simulation software , and uses it on the hxmt power system designing and simulation 本文以国家973专项课题“天体高能辐射的空间观测与研究”的子课题“ hxmt卫星系统方案设计”为应用背景，构造了一个面向卫星电源系统的仿真软件，并对hxmt天文卫星电源系统进行了设计分析和仿真工作。
The thesis is based on simulink technology . receiving the data from stk ( satellite tool kit ) software , it realizes the real - time energy balance simulation of the power system . the system considers the influence by the attitude changing and different load courses , and finishes the modeling for energy working 基于simulink技术，本文应用stk软件工具包所提供的轨道及卫星参数，着重考虑天文卫星运行过程中姿态变化、不同负载的运行等对电源系统的影响，对卫星的具体能量变化进行计算并建模，构建了一个实时仿真电源系统能量平衡的仿真系统。
The simulation program has been implemented to simulate the procedure of hxmt detecting x - ray source . the simulation result has been used to analyze the overlay region in celestial sphere , the variation of photon current intensity and the variation of the angle between sun and orbit , which demonstrate the reason why to select a 550 km height and 43o inclination low earth orbit as hxmt ' s orbit 利用仿真程序，实现了仿真一个正在预研的天文卫星? ?硬x射线调制望远镜hxmt观测x射线源的过程，分析了天球覆盖、 hxmt接收的光子流强度的变化和太阳轨道面夹角的变化，说明了选取高度为550km ，倾角43o的近地圆轨道作为hxmt的运行轨道是合理的选择。
