卫星信道模拟器的设计

Design onSatellite Channel Simulator

为了保证地面测控系统的系统指标,尤其是针对综合基带的测速和测距的指标,设计了一套能模拟卫星轨道运行的设备,来对地面测控系统的系统指标进行验证。介绍了卫星信道模拟器的工作原理设计和信号的模拟要求,阐述了信号在空间信道传输时延及衰减表述为接收端多普勒频率以模拟目标的距离和速度的硬件和软件设计,解决了其涉及的关键技术,并提供了测试数据,最后给出了系统应用模型。

To satisfy the system parameter of TT C system, particularly aiming at the precision of velocity and distance measurement of integrated baseband equipment, this paper designs a set of equipment that can simulate satellite orbit movement to verify the system parameter of TT -C system. It describes the operating principle design and signal simulation requirements of satellite channel simulator. It discusses the hardware/software design which explains the channel transmission delay and attenuation of signal precisely as receiving-end Doppler frequency in order to simulate the distance and speed of target. The key technologies are implemented and the test data are provided. Finally, the application model of system is given