• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Computational Electromagnetics Society journal >A Study on the Propagation Characteristics of AIS Signals in the Evaporation Duct Environment
【24h】

A Study on the Propagation Characteristics of AIS Signals in the Evaporation Duct Environment

机译：蒸发管环境中AIS信号的传播特性研究

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The propagation characteristics of signal of the Automatic Identification System (AIS) in the evaporation duct environment over the sea surface are investigated by using the parabolic equation method. The parabolic equation method has excellent stability and accuracy in solving the computational problem of electromagnetic wave propagation under different atmospheric conditions and it is probably the most suitable for the purpose of analyzing AIS signals. The propagation of AIS signals in air is determined by the variation of the refractivity with height. For AIS transmission, ducting propagation may be the most important propagation mechanism. The propagation loss of AIS signals in the evaporation duct is calculated and compared with that for the case of the standard atmosphere. In order to demonstrate the effect of evaporation duct on the propagation of AIS signals more intuitively, propagation loss versus range for three typical AIS links and the receiver height versus propagation loss under different atmospheric conditions are analyzed in details. The simulation results show that the evaporation duct has little influence on the AIS system.
机译：利用抛物线方程法研究了自动识别系统（AIS）信号在海面蒸发管环境中的传播特性。抛物线方程法在解决不同大气条件下电磁波传播的计算问题时具有出色的稳定性和准确性，可能最适合用于分析AIS信号。 AIS信号在空气中的传播取决于折射率随高度的变化。对于AIS传输，管道传播可能是最重要的传播机制。计算出AIS信号在蒸发管中的传播损耗，并将其与标准大气情况下的传播损耗进行比较。为了更直观地说明蒸发导管对AIS信号传播的影响，详细分析了三种典型AIS链路的传播损耗与范围的关系，以及在不同大气条件下接收机高度与传播损耗的关系。仿真结果表明，蒸发管对AIS系统影响很小。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号