Saline-alkali soil characteristic detection method based on passive microwave mixed pixel decomposition technology
A technology of mixed pixel decomposition and passive microwave, which is applied in the direction of material analysis, measuring device, and material analysis using microwave means, which can solve the problems of not combining optical and microwave remote sensing, and unable to meet the application requirements of saline-alkali land
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[0089] The research area is located in the west of Jilin Province, which belongs to the southwest of Songnen Plain. The latitude and longitude range of the area: 121°38′-126°11′E, 43°59′-46°18′N, the area includes eight areas including Daan City, Zhenlai County, Tongyu County, with an area of about 4.7 million km 2 . Although salinized land is distributed throughout the region, the area and degree of development vary from place to place. The present invention uses MWRI passive microwave remote sensing data and MODIS 8-day synthetic surface reflectance data product, combined with the proposed saline-alkali land passive microwave mixed pixel decomposition method, to realize the detection of saline-alkali land characteristics in western Jilin Province, China in August 2011.
[0090] Specifically include the following steps:
[0091](1) Classification of ground objects in the observation area:
[0092] Download the 8-day synthetic surface reflectance data MOD09A1 of the medi...
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