卫星通信数传半物理仿真试验平台的构建与应用

提出了卫星通信数传半物理仿真试验方法,介绍了卫星通信数传半物理仿真系统平台的功能及设计原理.提出的卫星通信数传半物理仿真试验平台通过对仪器设备的控制来模拟卫星通信时不同工况的数传信号,将基于结构相似度的图像评价方法应用于数传质量评估中,实现系统信道数据传输质量的量化分析.在EMC实验室中,系统成功实现了数传链路的仿真试验,试验中的传输数据使用真实的卫星遥感图像,并采用与卫星上相同的数据处理方法,运行相同的星上协议.经试验验证,所提出的卫星通信数传半物理仿真试验方法能够有效建立数传链路各项参数与数据传输质量的模型,对影响数传能力的因素进行地面研究,并为数传故障分析提供依据和试验方法.

Construction and Application of Semi-Physical Simulation Test Platform for Satellite Data Transmission

The method of satellite communication data transmission semi-physical simulation test is proposed,and the function and design principle of the simulation platform are introduced.The proposed simulation platform simulates the satellite communication transmission signals in different conditions by controlling its devices.The quantitative analysis of the data transmission quality is achieved by implementing the image evaluation method based on structure similarity.The semi-physical simulation test is done in EMC laboratory,where the real satellite remote sensing image is used,and the same data processing method and protocol as the ones in satellite are adopted.The test proves that the proposed method can effectively establish the models of transmission link parameters and data transmission quality,and make the groung study on the factors influencing the data transmission capability and provide the basis and test method for data transmission fault analysis.