知识与财富的链接
航空测控数据链无线传输中,受到各种因素的影响,会出现突发性的链路质量下降甚至链路中断,导致经此链路传输的数据丢失。针对这种数据传输失效问题,对各类自动请求重传(ARQ)技术的工作方式及特点进行了分析比较,给出了一种适用于航空测控数据链的选择重传ARQ(SR-ARQ)解决方案,据此进行了仿真研究。仿真结果表明:SR-ARQ可以有效解决因链路短时中断导致的数据传输失效问题,同时保证数据传输的时序特性。并在工程应用中取得了预期效果。
Due to influence of various factors in TT＆C of UAV, there will be unexpected link quality or link interruption, resulting in lost data of the link transmission. In order to solve this problem, various types of Automatic Repeat Request （AILQ） technology and its characters are analyzed and compared in this paper. Finally a solving method of SR-ARQ, be fit for TT＆C of UAV was proposed. According to above, the simulation research is firLished. The simulation results indicate that StL-AtLQ can be effective solution to data transmission failures caused by link short interruptions, and the timing characteristics of data can be guaranteed as the same time. Expected results are obtained in the engineering application.
