一种空空扩频通信FPGA全数字仿真设计方法

An air-to-air spread spectrum communication FPGA full digital simulation design method

摘要:

空空通信机是飞船和目标飞行器交会对接过程中的关键通信链路。空空通信FPGA作为空空通信机的核心部分,由接收信道和发射信道组成,分别完成数据的接收和发射功能_[1]。为保证空空扩频通信FPGA的正确性、健壮性,提高测试的覆盖性和完整性,提出了一种适用于空空扩频通信FPGA的全数字仿真验证方法,给出了中频信号生成模型和解扩接收模型的实现方案,并给出最终仿真结果。仿真结果表明,该仿真验证方法通过对FPGA的闭环性测试,自动完成激励和信号的采集、记录、比对,能有效提高仿真覆盖率,更真实地反映FPGA的工作细节,帮助设计师尽早发现FPGA设计问题,有效提高验证的质量。

Abstract:

The air-to-air communication machine is the key communication link in the rendezvous and docking of spacecraft and target aircraft. As the core of the air-to-air communication machine, the FPGA is composed of receiving channel and transmitting channel _[1].In order to ensure the correctness of the spread spectrum communication FPGA, robustness, and improve test coverage and integrity, this paper puts forward a applicable to empty the spread spectrum communication FPGA digital simulation method, gives the intermediate frequency signal generated model implementation scheme of settlement expansion receiving model, and finally the simulation results is given. Simulation results show that the simulation method based on FPGA in the closed loop test, completion incentives and signal acquisition, recording, comparison, simulation can effectively increase the coverage, more truly reflect the FPGA work details, help the designer found the FPGA design problem as soon as possible, improve the quality of the verification.