Integrated real-time correction device for atmosphere convection layer and ionized layer radio wave refraction error

Abstract

The invention discloses an integrated real-time correction system for atmosphere convection layer and ionized layer radio wave refraction errors, which comprises a microwave radiometer, a single-station GPS (Global Positioning System) and an integrated real-time correction unit, wherein the microwave radiometer is used for detecting a convection layer refractivity profile; the single-station GPS is used for detecting an ionized layer electron density profile in real time; and the integrated real-time correction unit is used for calculating radio wave refraction error corrections in real time by adopting a ray tracing method based on the convection layer refractivity profile, the ionized layer electron density profile and the apparent distance and the apparent elevation angle parameter of a detection target, wherein the radio wave refraction error corrections comprise a distance error correction, an elevation angle error correction and a speed error correction. The integrated real-time correction device for atmosphere convection layer and ionized layer radio wave refraction errors overcomes the defect that the parameters of a convection layer and an ionized layer cannot be simultaneously detected by adopting the traditional method, realizes the real-time correction of the radio wave refraction errors of the convection layer and the ionized layer, has the advantages of high accuracy, good real-time performance, unattended operation, strong mobility, low cost, simplicity in operation and the like, and provides a technical support for improving the accuracy of systems for aerial survey, deep-space survey, ballistic trajectory measurement and the like in China.

Description

technical field [0001] The invention relates to the technical field of atmospheric environment detection, in particular to an integrated real-time correction device for the refraction error of radio waves in the troposphere and ionosphere. Background technique [0002] Atmospheric environment mainly includes troposphere and ionosphere. As the information transmission path of information system, atmospheric environment directly affects the working performance of electronic information system. This is because when radio waves propagate in the atmosphere, due to lossy, inhomogeneous and time-varying atmospheric media, the radio waves will undergo phenomena such as absorption, scattering, reflection, refraction, and flickering. The atmospheric refraction effect will cause the propagation time of radio waves Delay and path bending cause certain changes in the speed and direction of signal propagation, resulting in tracking and positioning errors in the distance and angle of radio...

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Problems solved by technology

[0004] In order to solve the problem in the prior art that the refraction errors of the troposphere and the ionosphere cannot be corrected in real time at the same time, the present invention provides an integrated real-time correction method for the refraction errors of the troposphere and ionosphere

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