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本文针对传统遥感卫星数据记录系统需要人工输入工作计划的现状,以及无人职守工作模式的需求,提出一种智能化记录系统技术的解决方案。本方案主要采Aho-Corasick算法,通过搜索下行数据帧同步字的方法,区分卫星数据与无用信号;通过给定策略实现对记录系统起停的控制;通过给定任务需求策略,自动记录和传输有用卫星数据。本系统基于Aho-Cora-sick算法实现了识别20余颗卫星的能力。设计时采用Aho-Corasick算法作为帧同步字信号的盲搜或引导,一旦“锁定”卫星后则采用查找表的算法,提高了系统处理速度。实现后的记录系统仅需人工配置目标星和工作时间段等信息,之后运行工作可无人职守。
In this paper, aiming at the situation that traditional remote sensing satellite data recording system needs manual input work plan and the need of unattended working mode, a solution of intelligent recording system technology is proposed. This scheme mainly adopts the Aho-Corasick algorithm, which searches for the data of the downlink data frame synchronization word to distinguish the satellite data from the unwanted signal. The control of starting and stopping of the recording system is achieved through a given strategy. Automatic recording and transmission Useful satellite data. The system based on Aho-Cora-sick algorithm to identify the ability to identify more than 20 satellites. The design uses Aho-Corasick algorithm as the blind search or guide of the frame synchronization word signal, and once the “lock” satellite uses the look-up table algorithm to improve the system processing speed. After the realization of the recording system only need to manually configure the target star and working hours and other information, then run the job can be left unattended.