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在最近几年中,参考文献[1—11]提出了许多场强预测方法.由于有地形数据库的数据可以利用,这些方法就有可能比较准确地预测不规则地形上的场强。将这些预测的场强值与在Feldberg/Schwarzwald 米波发射机覆盖区内实测的场强值进行比较,使这些方法的预测精度得到了验证。CCIR 建议书370-4的预测法也包括在这一比较之中,该方法只是用统计参数来估计地形影响的。文中简述了各种方法的主要原理并讨论了比较的结果.
In recent years, many field strength prediction methods have been proposed in reference [1-11], and due to the availability of topographic database data, these methods have the potential to predict the field strength on irregular terrain more accurately. Comparing these predicted field strengths with the field strengths measured in the Feldberg / Schwarzwald transmitter coverage area validates the prediction accuracy of these methods. The prediction method of CCIR Recommendation 370-4 is also included in this comparison, which only uses the statistical parameters to estimate the terrain effects. The article briefly describes the main principles of the various methods and discusses the results of the comparison.