扩频多目标信号动态模拟系统的设计与实现

Design and Realization of System on Multi-target Dynamic Signal Simulation in Direct Sequence Spread Spectrum System[HS)]

摘要:

针对航天测量船在扩频多目标测控任务中缺乏链路动态信号模拟联试手段的实际,通过对扩频多目标测控体制原理进行分析,结合多目标模拟器的使用设计了扩频多目标信号动态联试环境,提出了一种基于STC89C52RC单片机技术的信号动态变化自控系统的设计方案；该系统可较好地根据控制文件设置各目标链路的衰减量,从而模拟飞行目标信号在空间动态地变化,经过数次任务验证,证明该系统可有效提高对跟踪设备的动态性能和扩频基带码间抗干扰性能的检测。

Abstract:

Aiming at the problems of lack the dynamic signal simulation, existed in DS-SS system of TT&C multi-target mission,through the analysis of the principles about multi-target measurement and control missions based on spread spectrum technology, combining the using of multi-target simulator, a testing and commissioning condition is built up and a design of dynamic signal multi-target TT&C system based on STC89C52RC single-chip computer technology is successful developed and applied in an actual. The system can have the better capability to change the attenuator value according to the controlling file and offers a new way to simulate the flight target dynamic signal in space. It is proved that the system effectively improves the checking ability of tracking equipment dynamical performance and base band inter-symbol anti-disturbance performance according to the results of several experimental missions.