Method and system for farmland irrigation district area remote sensing extraction

• Main Authors: ZHAI YONGGUANG, WANG SHUDONG, ZHANG BAOZHONG, WU TAIXIA, ZHENG YAOMIN, CHEN HE, WEI ZHENG, LIU SHUFU
• Format: Patent
• Language: Chinese; English
• Published: 07.12.2018
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The present invention provides a method for farmland irrigation district area remote sensing extraction. The method comprises the steps of: for each key sub area in a farmland, monitoring soil water content and canopy water content of crops at each sampling point in the key sub areas through adoption of a method of a high hyperspectral remote sensing and microwave remote sensing, and obtaining critical points of an irrigation district in all the sampling points; and taking corresponding coordinates of each critical point in a thermal infrared-normalized differential vegetation index feature space as critical point coordinates, and calculating the area of the irrigation district according to the coordinates of the critical points. The method and the system perform remote sensing images to collect data to calculate the normalized differential vegetation index, the soil water content and the canopy water content of the crops to obtain the critical points of the irrigation district in thefarmland and search the c