Satellite remote sensing method and system for monitoring water body entering sea drain outlet

• Main Author: GUO HUAIHAI
• Format: Patent
• Language: Chinese; English
• Published: 31.08.2021
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

The invention discloses a satellite remote sensing method and system for monitoring a water body entering a sea drain outlet, and the method comprises the steps: selecting a research region, after the region is selected, downloading satellite remote sensing data, and carrying out the data preprocessing, thereby obtaining Rayleigh correction reflectivity Rrc data; masking the construction land on the shore, and obtaining construction land pixels and non-construction land pixels; identifying mud flat pixels and non-mud flat pixels from the obtained non-construction land pixels; and on the basis of a chromaticity method, performing discharge port water body pixel identification on the non-mudflat pixels, and obtaining discharge port water body pixels. According to the method, on the basis of spectral features and color features of the polluted water at the sea discharge outlet, a model for extracting the polluted water at the sea discharge outlet of a decision tree based on NDWI and a chromaticity method is esta