基于地面参数预测的电波折射修正软件设计

受大气折射效应的影响,电波传播路径发生弯曲,传播速度小于光速,给无线电定位系统带来了一定的误差,因此需利用电波折射误差计算软件进行修正.首先通过对常用大气折射误差修正方法的分析,结合实际应用需求,选取了基于地面参数预测的电波折射修正模型.然后进行折射软件修正算法设计,给出了流程图及主要功能实现方法.最后通过模拟数据对该软件修正效果进行检验.结果表明,该软件能够准确、快速显示大气引起的电波折射误差,且能够将误差控制在1%以内.

Software Design for Refraction Correction of Radio Wave Based on Estimation of Geoclimatic Parameters

Propagation path of radio wave curves due to the effect of atmospheric refraction,thus its velocity is less than light and a certain error is seen in the system of radio wave positioning.Therefore,software for refraction correction of radio wave is needed.Model for refraction correction of radio wave based on estimation of geoclimatic parameters is discussed first following the analysis of several methods of atmospheric refraction correction that are in common use and in the demands of practice application.Then the design of algorithm of refraction correction software is given with the flow chart and the methods for realizing its main functions.Finally,a correction experiment is carried out based on tentative data to verify the efficiency of the software.The result shows that the software responses accurately and rapidly to the refraction of radio wave and the error is confined to 1%.