基于Simulink的联合战术信息分发系统仿真

JTIDS signal simulation based on Simulink

摘要:

通过研究联合战术信息分发系统(JTIDS)采用的主要技术，利用Simulink仿真软件，实现了对信源的差错控制编码；以32位的循环码移位键控(CCSK)码字S0为基础建立扩频空间，完成软扩频；最后通过VCO模块实现了51个频点的随机跳变，完成了JTIDS数据链路的仿真，并在白噪声信道和干扰环境中分析了该系统的抗干扰性能，为下一步对其进行有效干扰奠定基础。

Abstract:

By studying the key technologies of Joint Tactical Information Distribution System(JTIDS)，and utilizing Simulink software，this study realized the source error control coding. By using 32 bit Cyclic Code Shift Keying(CCSK) code-word S0 to establish spread spectrum space, the tamed spread spectrum was completed. The random transformation of 51 frequency points was achieved with VCO module and the link simulation of JTIDS was prosecuted. The anti-jamming performance of this system was analyzed in the Additive White Gaussian Noise(AWGN) channel and jamming environment，which laid the foundation for the study of effective jamming to this system.