区域导航对流层延迟误差修正模型研究

Study on Model of Troposphere Delay Error Correction Regional Navigation System

本文研究了电波大气折射理论,分析了传播误差因素,阐述了区域导航信号的传播路径与GNSS卫星导航的不同,论述了对流层延迟对区域导航信号测量精度的影响,设计了满足区域导航系统应用需求的对流层延迟误差修正模型,并通过仿真研究,验证了所设计区域导航对流层延迟误差修正模型的可行性,并给出了该模型在远距离低仰角和近距离高仰角下的误差修正能力。

This paper studies the theory of radio wave atmospheric refraction,analyses the propagation error factors,explains the difference of signal propagation path between the regional navigation system and GNSS satellite navigation,discusses the impact of tropospheric delay on the measurement accuracy of regional navigation signals,and a tropospheric delay error correction model is designed to fit the application requirements of regional navigation systems.Through simulation research,the feasibility of tropospheric delay error correction model designed for regional navigation system is verified,and the error correction capability is given at long distance with low elevation angle and close range with high elevation angle.