干扰条件下卫星通信链路计算模型研究

Calculation Model of Satellite Communication Link under Interference Conditions

卫星通信易受到敌方干扰,在实际应用中必须对干扰条件下的链路性能加以分析。结合以上需求,首先研究上行干扰功率对透明转发器性能的影响,得出不同干扰功率下的转发器增益,又分析下行干扰入射角对天线性能的影响,提出了一种可以计算上、下行干扰条件下链路性能的计算模型,并通过实例验证了该模型的可靠性。链路计算模型可用于评估链路性能,也可以预测抗干扰效果,可为通信抗干扰技术的应用提供参考指标。

Satellite communication is vulnerable to the enemy interference. In practical applications, the link performance under interference conditions must be analyzed. Combining the above requirements, firstly, the impact of uplink interference power on the performance of transparent transponders is explored, and the transponder gain under different interference powers obtained. Then, the influence of the incident angle of the downlink interference on the performance of the antenna is analyzed. A calculation model for calculating the link performance under the conditions of uplink and downlink interference is proposed. The reliability of the model is verified by an example. The link calculation model can be used to evaluate link performance and predict anti-jamming effects, thus providing reference indicators for the application of communication anti- interference technology.