MWHTS channel weight function calculation method based on neural network
A technology of weight function and neural network, which is applied to the calculation field of MWHTS channel weight function, can solve the problems of large amount of calculation and low calculation efficiency, and achieve the effect of small amount of calculation, simple and easy operation, and fast calculation speed.
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[0039] The observational altitude angle in the observation data of Fengyun-3D Microwave Humidity and Temperature Sounder (MWHTS) is matched with the atmospheric parameters in the ERA Interim data set of the European Center for Medium-Range Weather Forecasting (ECMWF). Among them, the used atmospheric parameters, geospatial The resolution, profile layering, and matching rules in time and space are as described in Step 1. The time range used is from January 2019 to June 2019, and the geographical range is (25°N—45°N, 160 °E—220°E). 583089 groups of matching data can be obtained. Input the matching data into the radiative transfer model RTTOV to calculate the atmospheric transmittance of each atmospheric layer to the satellite payload MWHTS.
[0040] According to step 2, the weight function profile of each MWHTS channel is calculated by using the atmospheric transmittance and the pressure value of each layer of the atmospheric layer, and the matching data set of atmospheric para...
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