Method and system for establishing three-dimensional water vapor grid model

A technology of water vapor and model, applied in the field of GNSS meteorology

Pending Publication Date: 2020-11-03
CHINESE ACAD OF SURVEYING & MAPPING
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Problems solved by technology

[0006] However, there is no model in the prior art that can extract refined water

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  • Method and system for establishing three-dimensional water vapor grid model
  • Method and system for establishing three-dimensional water vapor grid model
  • Method and system for establishing three-dimensional water vapor grid model

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Embodiment Construction

[0089] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0090] The purpose of the present invention is to provide a method and system for establishing a three-dimensional water vapor grid model, so as to finely extract water vapor information and provide a theoretical basis for fine weather forecasting.

[0091] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying ...

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Abstract

According to the method and the system for establishing the three-dimensional water vapor grid model, the GNSS data is utilized to invert the ZWD so as to calculate the PWV, the sounding station datais utilized to calculate the PWV, and the least square variance estimation is utilized to perform data fusion on the two. The method comprises the following steps: acquiring an atmospheric profile byutilizing occultation data and sounding data, extracting meteorological factors in the atmospheric profile, determining time and space references of depth fusion on the basis of GNSS/sounding/occultation inversion water vapor, and establishing a grid water vapor model based on multi-source data. According to the technical scheme, the limitation that the whole troposphere serves as a research object is broken through, the established layered water vapor model can conduct refined extraction on water vapor data, a theoretical basis is provided for refined weather forecast, and certain practical significance is achieved.

Description

technical field [0001] The invention relates to the field of GNSS meteorology, in particular to a method and system for establishing a three-dimensional water vapor grid model. Background technique [0002] Temperature and water vapor are two important indicators for global change monitoring. Global warming is a prominent manifestation of global change. Under the global climate background characterized by it, extreme weather and climate events occur frequently, which can easily cause heavy rain disasters, floods and serious soil erosion, resulting in casualties and major economic losses. loss. Improving the accuracy of water vapor monitoring technology has certain social and economic value. [0003] GNSS (Global Navigation Satellite System, GNSS) inversion of water vapor deepens the application mode of GNSS technology, promotes cross-disciplinary integration, and is in line with the national satellite navigation medium and long-term development plan. BeiDou Navigation Sat...

Claims

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Application Information

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IPC IPC(8): G06F30/20G01W1/10G06F113/08
CPCG01W1/10G06F30/20G06F2113/08
Inventor 许长辉党亚民谷守周任政兆
Owner CHINESE ACAD OF SURVEYING & MAPPING
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