投弃式仪器数据传输信道时频响应求解方法

发布时间：2018-01-30 08:26

本文关键词： 投弃式仪器信道分布参数时域有限差分法 BLT方程时频响应　出处：《电波科学学报》2016年05期 　论文类型：期刊论文

【摘要】：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.
[Abstract]:In order to solve the problem of large error of channel distribution parameter model of shipboard throwing instrument, the transmission function can solve the problem. A method to solve the time-frequency response of its data transmission channel is presented. The time-domain response is finite Difference Time Domain. FDTD method is used to obtain the time-domain response at any position on the channel. The frequency-domain response is based on the BLT-Baum-Liu-Tesche-based equation combined with the electromagnetic topology theory. Finally, the time-frequency waveform of the channel is tested and compared with the theoretical simulation results. The results show that the theoretical simulation results are consistent with the experimental results in the operating frequency of the instrument. It provides a theoretical basis for further research on the design of terminal circuit and the improvement of transmission scheme.
【作者单位】：天津大学电子信息与工程学院;国家海洋技术中心;
【基金】：国家自然科学基金(41206031)
【分类号】：P716
【正文快照】： 引言船载投弃式仪器是一种对海水的环境参量进行测量的仪器,在海洋探测中应用广泛,一般由水上接收机和水下探头组成.它的工作方式简化为图1所示,探头由发射装置发射入水,入水后探头中的传感器开始测量海洋环境参量,测量数据以数字信号形式通过传输线同步传到船上.图1投弃式仪

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