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在建立甚高频空地数据链信道访问状态模型的基础上，利用连续时间的马尔可夫链模型和ＣＳＭＡ矩阵分析方法，分析了空地数据包试图发送率、信道传输检测时间对数据链性能的影响，对不同用户访问规律、不同的数据包发送用户数下的信道吞吐量和报文数据延时等性能指标进行数值模拟，结果表明，用户数目、重传率及信道检测时间对数据链性能有显著影响。
On the basis of establishing the channel access state model of VHF data link, this paper analyzes the impact of the transmission rate of empty data packet and the channel transmission detection time on the data link performance by using Markov chain model and CSMA matrix analysis method. , The performance of different users’ access rules, different throughputs of data packets sent by users and delay of message data are simulated. The results show that the number of users, the retransmission rate and the channel detection time have some impact on the data link performance Significantly affected.