摘要
为了模拟航天发射场遥测设备接收遥测信号的多径干扰的影响,分析遥测设备的接收解调性能,设计实现了多径衰落模型,并进行了仿真验证。该模型在FPGA开发板上采用VHDL硬件语言进行实现,可以模拟不同路径、不同功率的遥测信号。使用MATLAB软件和Signal TapⅡ工具对模型的各个功能模块进行了系统级、硬件级的仿真验证。仿真结果表明多径衰落模型硬件设计正确,功能正常,可以模拟航天发射场遥测设备受到多径干扰的影响,满足分析多径干扰下遥测设备的接收解调性能的需求。
In order to simulate the influence of the multipath interference of the telemetry equipment of the space launch site,the multipath fading model is designed and implemented. The model is implemented by VHDL hardware language on the FPGA development board,which can simulate the telemetry signals with different paths and different power.The system level and hardware level simulation was verified by using MATLAB software and Signal Tap II tools. The simulation results show that the hardware design of the multipath fading model is correct and the function is normal.It can simulate the impact of multipath interference on the telemetry equipment,and meet the demand of the demodulation performance of telemetry equipment under multipath interference.
出处
《自动化与仪器仪表》
2016年第12期245-247,共3页
Automation & Instrumentation
