针对传输函数求解船载投弃式仪器信道分布参数模型误差较大的问题,提出了一种求解其数据传输信道时频响应的方法.时域响应采用时域有限差分(Finite Difference Time Domain,FDTD)法,求得信道上任意位置的时域响应,频域响应采用BLT(Baum-Liu-Tesche)方程结合电磁拓扑理论,对信道的关键节点进行频域分析.最后测试了信道的时频域波形,并与理论仿真结果进行对比,结果表明:在仪器的工作频率内,理论仿真与试验结果一致,为进一步地研究终端电路的设计及传输方案的改进提供了理论基础.
【英文摘要】
When we use the transmission function or the electromagnetic analytic software to analyze the expandable measuring instruments transmission channel distributed parameter model,a certain amount of errors will occur.This paper presents a method to analyze the channel transient and frequency response based on finite difference time domain(FDTD)method and Baum-Liu-Tesche(BLT)equation.For the transient response analysis,an improved FDTD method is presented to analyze transient response in any location of channel...