中文摘要：

本文针对罗兰C信号传播过程中的海岸效应进行了计算与分析。采用米林顿方法模拟计算了罗兰C信号在穿越海岸线传播中的强度以及传播时延,并将计算结果与实验数据进行了对比分析。根据计算结果,当罗兰C信号穿越海岸线时,其信号在场强和船舶时延上都有较大变化。通过与实验数据的对比,发现米林顿方法在预测罗兰C信号穿越海岸线的强度方面十分成功,而对时延的预测精度却与测量点的位置密切相关。

英文摘要：

The coastline effect of Loran C signal is researched, the strength and time delay of Loran C signal cross the coastline are calculated with Millington＇s method, and the calculation results are compared with the test data and analyzed. According to the calculation results, the strength and time delay of Loran C signal cross the coastline change significantly. The data comparison tells us that the Millington＇s method does well in forecasting Loran C signal＇s strength but its precision in time delay forecasting is closely related to the test point position.