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Method for Retrieving Land Surface Temperature from Passive Microwave Remote Sensing Data AMSR-E

A technology of surface temperature and remote sensing data, which is applied to the re-radiation of electromagnetic waves, radio wave measurement systems, and the use of re-radiation to achieve the effects of reducing unknowns, overcoming surface temperature, and high precision

Inactive Publication Date: 2012-02-15
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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Problems solved by technology

[0020] The purpose of the present invention is to provide a method for retrieving land surface temperature from passive microwave remote sensing data AMSR-E, to overcome the shortcomings of existing algorithms for reversing land surface temperature for AMSR-E data

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  • Method for Retrieving Land Surface Temperature from Passive Microwave Remote Sensing Data AMSR-E
  • Method for Retrieving Land Surface Temperature from Passive Microwave Remote Sensing Data AMSR-E
  • Method for Retrieving Land Surface Temperature from Passive Microwave Remote Sensing Data AMSR-E

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Embodiment Construction

[0055] The present invention leverages MODIS land surface temperature data and uses a neural network to invert land surface temperature from AMSR-E data. Since the MODIS temperature product is relatively high, and the two sensors are on one star, the MODIS surface temperature product can be regarded as the surface measured data corresponding to the AMSR-E data.

[0056] The method for retrieving the surface temperature from the passive microwave remote sensing data AMSR-E of the present invention is:

[0057] The first step is to establish the database of radiance temperature and corresponding MODIS surface temperature products on the 10.7, 18.7, 23.8, 36.5 and 89GHz V / H dual-polarization stars of the AMSR-E sensor on the earth observation satellite Aqua:

[0058] 1-1) Select the research area or monitoring area, and register with the US Earth Observation Data Center ( http: / / delenn.gsfc.nasa.gov / ~imswww / pub / imswelcome / index.html ), download the MOD11_L2 LST_1KM and AMSR_E_L...

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Abstract

The invention relates to a method by utilizing passive microwave remote sensing data AMSR-E to invert surface temperature. The method comprises three steps of: step 1, collecting MODIS (moderate-resolution imaging spectroradiometer) surface temperature product which is provided by an American Earth Observation Data Center and used as AMSR-E surface temperature data by latitude and longitude control, and establishing a training and testing database; step 2, utilizing a neutral network to perform repetitive training and testing; and step 3, performing inversion calculation on AMSR-E actual image data, and actual surface verification and application analysis. The product obtained by the method has high precision, and overcomes the effect of clouds and partial raining on thermal infrared.

Description

technical field [0001] The invention relates to a method for inverting surface temperature from passive microwave remote sensing data AMSR-E, which can be applied to remote sensing departments such as meteorology, environmental monitoring, land management, agricultural monitoring, and national defense and military affairs. Background technique [0002] At present, the main passive microwave remote sensing data are SMM, SSM, and AMSR. The parameter characteristics of the three sensors are shown in Table 1. [0003] Table 1: Comparison of main instrument parameters of SMMR, SSM and AMSR-E [0004] parameter SMMR (Nimbus7) SSM / I (DMSP) AMSR-E Frequency (GHz) 6.6，10.7， 18，21，37 19.3，22.3， 37，85.5 6.9，10.7，18.7， 23.8，36.5，89 Height (KM) 955 860 705 Angle of incidence (°) 50.3 53.1 55 Mow Width(KM) 780 1400 1445 Launch date (year) 1978 1987 2002 [0...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/95
CPCY02A90/10
Inventor 毛克彪唐华俊周清波陈佑启缪建明任天志
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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