Application data processing method of spaceborne microwave radiometer

A technology that uses data and processing methods. It is applied in the direction of using multiple variables to indicate weather conditions, measuring devices, and meteorology. It can solve the problems of inversion software lacking local parameter correction capabilities and user opacity.

Active Publication Date: 2016-10-05
NAT SPACE SCI CENT CAS
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Problems solved by technology

At present, my country's spaceborne microwave radiometer inversion software relies on the existing foreign model or transplants on this model, but the source code of the inversion software for similar foreign equipment is not transparent to users, which leads to the development of my country's spaceborne microwave equipment. The researchers and users lack the local parameter correction ability of the inversion software, which has great limitations on further improving the detection and inversion accuracy

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  • Application data processing method of spaceborne microwave radiometer
  • Application data processing method of spaceborne microwave radiometer
  • Application data processing method of spaceborne microwave radiometer

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Embodiment Construction

[0020] The application data processing method of a spaceborne microwave radiometer according to the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] The application data processing method of a kind of space-borne microwave radiometer of the present invention specifically comprises the following steps:

[0022] Step 1) According to the atmospheric raster data provided by the meteorological forecast center, the weather research and forecast system is driven to modify the model parameters according to the requirements, and generate global or regional profile data and sea / land surface data that meet the requirements of time-space matching;

[0023] Step 2) using the radiation transfer simulation model to establish a signal forward transmission process for the data generated in step 1), and obtain a radiation brightness temperature value input matrix for different antenna parameters of the microwave radiomete...

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Abstract

The present invention provides an application data processing method of a spaceborne microwave radiometer. According to the application processing method, by inputting the global or regional profile data and the radiation brightness-temperature values in a matrix, adopting a wavelet neural network algorithm to train the data, and comparing the outputted atmosphere humiture profile and ground/sea surface parameters with the preset threshold indexes, the back propagation of the atmosphere humiture profile and ground/sea surface parameter errors is implemented; by correcting each layer of weights in an error gradient descent manner, the work of utilizing a data set to correct the inversion parameters locally is realized, the local correction capabilities of the equipment developers and users to the inversion software parameters are improved, and further the detection and inversion precision is improved further.

Description

technical field [0001] The invention relates to the technical field of space-borne microwave radiometers, in particular to an application data processing method of space-borne microwave radiometers. Background technique [0002] The space-borne microwave radiometer can penetrate clouds and rain areas, and realize all-day and all-weather observation of global atmospheric temperature and humidity, water vapor content, ground / sea surface temperature and humidity, rainfall and other meteorological data. At present, the Fengyun series polar orbiting meteorological satellites in my country have been operating in orbit, and the microwave hygrometers carried on them have been in orbit for several years. Through long-term evaluation of the data of the FY-3B star microwave hygrometers, the research shows that the quality of the observation data is very high. Reliable, the impact on model forecasts is comparable to that of similar instruments in Europe or the United States, and the data...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01W1/02
Inventor 何杰颖张升伟
Owner NAT SPACE SCI CENT CAS
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