摘要
针对现有LPI辐射源仿真信号逼真性不够、灵活性不高、实时性不强的问题,设计一种基于DSP与FPGA的LPI辐射源信号仿真系统,采用宽带DDS快速产生多种调制形式的LPI辐射源模拟信号并利用程控衰减器控制信号功率实现辐射源信号的动态模拟。介绍系统的硬件实现方案,采用模块化设计保证系统的可靠性,给出软件实现依据的数学模型,包括信号波形模型和PA模型。最后,对方案的可行性进行测试。测试结果表明,该系统能产生满足指标要求的辐射源信号,为舰艇电子侦察设备提供逼真的辐射源信号环境。
Aiming at the problems of low fidelity, low flexibility and poor real-time performance of the existing LPI emitter simulation signal, a LPI emitter signal simulation system based on DSP and FPGA is designed, which quickly generate a variety of LPI emitter simulation signal with DDS and control the signal power dynamically by program-controlled attenuator. Firstly, the hardware implementation scheme of the system is introduced, then the mathematical model of the software implementation is given, including the signal waveform model and PA model, finally the feasibility of the scheme is tested. The test results show that the system can produce emitter simulation signals can meet the requirements of the indicators, and signal fidelity is better than the traditional LPI emitter signal simulation system.
作者
刘冬利
兰慧
LIU Dong-li;LAN Hui(Department of Information Operation,Dalian Naval Academy,Dalian 116018,China)
出处
《舰船科学技术》
北大核心
2020年第11期124-127,共4页
Ship Science and Technology
基金
军内科研课题。
关键词
电子侦察
FPGA
辐射源信号
仿真系统
electronic reconnaissance
FPGA
radar emitter signal
simulation system
