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1090ES广播式自动相关监视(ADS-B)是国际民航组织(ICAO)推荐的一种监视模式。给出了ADS-B对目标飞机位置进行简洁位置报告(CPR)编解码的算法机理,仿真实现了报文收发的过程,并对收发的数据偏差进行了统计。同时,本文还通过建立接收模型,模拟仿真了二次雷达(SSR)A/C模式和S模式干扰信号以及本机接收距离对成功接收ADS-B报文的影响。研究结果表明,CPR算法对目标飞机位置编解码具有很高的有效性和准确性,减少同频干扰数以及缩短目标飞机和本机之间的距离,都能有效提高成功接收报文的概率。
1090ES Radio Automatic Related Monitoring (ADS-B) is a recommended monitoring mode by the International Civil Aviation Organization (ICAO). The arithmetic mechanism of ADS-B for concise position report (CPR) coding and decoding of the target aircraft position is given. The process of message sending and receiving is simulated and the data deviation of the received and sent data is calculated. At the same time, this paper also simulates the influence of secondary radar (SSR) A / C mode, S-mode interference signal and local receiving distance on the successful reception of ADS-B packets by establishing the receiving model. The results show that the CPR algorithm is highly efficient and accurate for the target aircraft position codec. The reduction of the number of co-channel interferences and the shortening of the distance between the target aircraft and the local plane can effectively improve the probability of successfully receiving the message.