空间移动平台APT系统研制

空间光通信将成为空间移动平台通信一种可行且诱人的通信手段。由于实际空间移动平台信标光捕获系统必须满足精度高、快速、体积小和实时性强等特点,在脱离计算机的情况下,采用TMS320LF2407A与TMS320DM642的双DSP新颖设计,实现了一种新型空间移动平台光通信的信标光扫描、跟踪和捕获控制系统。文中详细论述该系统的主要组成及功能,APT伺服系统的设计和系统的软件流程。运用卡尔曼预测模型,实现了3个像素的跟踪精度。依据APT系统的主要性能参数,该系统具有很好的实用价值。

Design and realization of APT system for the space movement platform

Space optical communication is a viable and attractive approach for movement platform communication in the future.Considering the communication conditions,the beacon optical acquisition and tracking system of space movement platform must have the characteristics of high precision,high speed,small volume and good real-time performance.An Acquisition,Pointing and Tracking(APT) system for space optical communication is designed by using double DSPs(TMS320LF2407A and TMS320DM642).The main composition and function of the system,the design and system software flowchart of APT servo system are described in detail.Based on Kalman prediction theory,the results illustrate that the tracking accuracy is better.According to experimental result,it is beneficial for the system to apply.