Atmosphere water vapor detecting method and system based on plough satellite GPS united chromatographic method

Abstract

The invention relates to an atmosphere water vapor detecting method based on a plough satellite GPS united chromatographic method. The method comprises the following steps that a plough satellite / GPS receiver receives a satellite signal and carries out united resolving, atmosphere total delay is computed; real-time weather measured data are collected, statics delay is computed; a carrier phase observed value received by the plough satellite / GPS receiver is obtained, ionized layer delay is computed; the statics delay and the ionized layer delay are deducted from the atmosphere total delay, wet delay is obtained; water vapor content on satellite signal routes is computed; a horizontal constraint condition and a vertical constraint condition are added according to the water vapor content on a plurality of satellite signal routes, and a four-dimensional atmosphere water vapor model is obtained and displayed. A plough satellite system is introduced, the monopoly position of a GPS can be broken, the atmosphere water vapor detecting method has the advantages of being low in cost, wide in detecting range and high in real-time degree, influence from weather conditions is avoided, maintaining is easy, real-time high-accuracy water vapor horizontal and vertical distribution conditions are provided, and significance for study on the atmosphere science field is achieved.

Description

technical field [0001] The invention relates to an atmospheric water vapor detection method, in particular to an atmospheric water vapor detection method and system based on a Beidou GPS joint tomography method. Background technique [0002] Water vapor is a trace gas in the earth's atmosphere. It accounts for a very small proportion in the atmosphere, only 0.1% to 3%, but it is the most active component in the atmosphere. Compared with other trace gases, water vapor is more important. Weather phenomena are mostly the result of changes in atmospheric water vapor. Water vapor absorbs and releases a large amount of latent heat during the phase transition process, directly affecting the ground and air temperature, and further affecting the vertical stability of the atmosphere and the formation of convective weather systems. The three-dimensional distribution of atmospheric water vapor, vertical transport of water vapor and phase transition are one of the dynamic mechanisms rest...

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Problems solved by technology

[0005] In atmospheric observation, experts tend to pay more attention to the vertical distribution of water vapor than to the horizontal distribution of water vapor. However, the existing Beidou inversion technology can only obtain the horizontal distribution of water vapor due to its late start and publicity of civilian signals.

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