北斗短报文通信信道性能测试与统计分析

Channel Performance Testing and Analysis of BeiDou Short-Message Communication

北斗短报文通信在各行业的应用急需其信道性能参数。然而,目前关于民用北斗短报文通信信道性能的测试和统计分析很少,尤其缺少大数据量的测试。文章分析了测试样本量对统计结果的影响,提出了统计北斗短报文传输成功率和传输延时所需最小样本量的计算方法,进行了较长时间的信道测试,获取了满足信道性能统计要求的大量实测数据。统计分析结果表明,北斗短报文通信单数据包的传输成功率为95.5%,平均传输延时为3.8s。取得的北斗短报文信道性能测试数据弥补了北斗民用信道性能测试的不足,统计分析的结果可在相关基于北斗短报文通信的系统设计时作为指标推算的参考依据。

Channel performance parameters of Beidou short-message communication （BDSMC） are urgently needed. There are few analysis results of civilian channel performance, especially lack of test data for huge data. The impact of sample size on statistical results is analyzed, and the calculation methods of minimum sample size for transmission success rate and transmission delay in BDSMC are presented. A long time channel test is conducted and a great deal of test data that meets statistical requirements is obtained. The statistics results show that the transmission success rate of single packet is 95. 5% and the average transmission delay is 3.8 s. Test samples obtained make up for the lack of civilian Beidou channel test data. The results can be used as a reference in the BDSMC-based system design.