“In the field of satellite remote sensing, experts have proposed a BP neural network method for the digital surface model of Gaofen-7 satellite images, which integrates satellite laser altimetry data. This method effectively improves the problem of low accuracy and quality of DSM elevation generated from satellite stereo images under uncontrolled conditions of gully development on the ground, and provides new ideas for the promotion and application of domestic high-resolution images and high-precision terrain modeling.”