Atmosphere water vapor measurement method based on Beidou satellite

Abstract

The present invention relates to an atmosphere water vapor measurement method based on a Beidou satellite. Signals of the Beidou satellite generate delay phenomena when the signals pass through the atmosphere, the delay can be divided into ionosphere delay, static delay and wet zenith delay. With adopting a dual-frequency receiving technology, the ionosphere delay can be almost completely eliminated, and the static delay can be corrected to the millimeter magnitude, such that the wet zenith delay with the millimeter magnitude is obtained. The wet zenith delay and the total amount of the water vapor have a strict direct proportion relationship, such that the water vapor content of the atmosphere can be accurately inverted by using the following characteristic of the signals of the Beidou satellite: when the signals emitted by the Beidou satellite pass through the atmosphere with the different water contents, the different delay phenomena appear. With the technology of the present invention, the technological monopoly of the developed countries is broken, the application blank of the Beidou satellite in our country is filled, and the high-technology and low-cost precision measurement method is provided for meterorology monitoring and forecasting in our country, such that the Beidou satellite navigation system becomes the important means for accurate weather forecasting in our country, wherein the developed countries adopt GPS to carry out the precise water vapor measurement.

Description

Technical field: [0001] The invention belongs to the technical field of ground-based water vapor measurement in meteorology. Specifically, it uses the relevant parameters output by the Beidou satellite navigation receiver on the ground to accurately calculate the water vapor content of the atmosphere. Its outstanding feature is the use of China's independent satellite navigation system for precise measurement of atmospheric water vapor content. Background technique: [0002] Along with the process of global industrialization, while the economy is developing rapidly, the natural environment is constantly deteriorating. The shortage of water resources caused by global climate change, large-scale drought, rising sea levels, shrinking glaciers, land desertification, fluctuations in food production, the spread of epidemics, and Earthquakes, tsunamis, etc. have become more and more serious threats to economic and social security, and the economic losses they have caused have also...

AI Technical Summary

Problems solved by technology

However, there is still a gap in the precise measurement of atmospheric water vapor content using the Beidou satellite navigation system. This is undoubtedly a major shortcoming in the development of ground application equipment for the Beidou satellite navigation system.

Images