Radar remote sensing-based detection method of soil alkalization

The invention discloses a radar remote sensing-based detection method of soil alkalization, comprising the following steps: computing the polarization parameter based on full polarimetric SAR data, dividing bare areas and vegetation-covered areas and generating images with masks; delimiting test areas and adopting measuring data to establish a dielectric model of moist salt soil; adopting the full polarimetric SAR data to invert a region complex permittivity map and carrying out RD geocoding, data information separation and conversion; based on the dielectric model and the region complex permittivity, adopting the genetic algorithm for inversion to obtain moisture contents of areas and salt contents of areas, and integrating geographic coordinate information and a vegetation cover mask map to generate a moisture content map and a salt content map; adopting the region complex permittivity and the moisture contents of areas to differentiate saline soil from alkali soil. By adopting the technical proposal of the