基于北斗RDSS的监视数据传输技术研究

为了实现通用航空器的监视数据在空-地之间的有效传输,完成地面监管人员对低空空域航空器的运行监控,文中综合利用ADS-B技术、数据压缩算法及北斗短报文技术,首先对在1090ES数据链上传输的ADS-B消息进行压缩,然后将较大压缩包分包处理以及添加包头控制符,最后基于北斗短报文传输协议格式封装监视数据压缩包后将其调制发出,并且在接收报文端添加接收成功/丢包反馈响应,在发送端添加丢失补发操作,进一步提高北斗短报文数据传输可靠性,尤其在ADS-B地面站接收覆盖不到的区域,对通用航空器的运行监视数据传输提供一个可靠的方案。

Monitoring data transmission technology based on Beidou RDSS

In order to realize the effective transmission of the surveillance data of the general aircraft between the air and the ground,the ground supervisors are monitored for the operation of the aircrafts,ADS-B technology,data compression algorithm and Beidou short message technology are comprehensively utilized.Firstly,the ADS-B message is transmitted on the 1090ES data link,and the ADS-B message is compressed by the LZW data compression algorithm,and then to subcontract processing of larger compression packages and adding a packet header control character.Finally,the monitoring data compression packet is encapsulated and modulated based on the Beidou short message transmission protocol format,as well as the feedback response of receiving success or packet losing is added on the receiving message end,the operation of losing and reissuing is added on the transmission end,these improve the reliability of the data transmission of the Beidou short message.It provides a reliable solution for the operation monitoring data transmission of the general aircraft,especially in the area where the ADS-B ground station can't receive coverage.