The invention discloses a
landslide susceptibility improvement evaluation method based on InSAR and LR-IOE models, and the method comprises the following steps: S1, collecting the geological and geographic data of an evaluation region, extracting evaluation factors, and building a
landslide susceptibility evaluation
index system; S2, obtaining the deformation rate of the
earth surface of the evaluation area in the
radar sight line direction through the SBAS-InSAR technology, screening out reliable deformation points, and converting the deformation rate from the
radar sight line direction to the maximum
gradient direction to serve as a
landslide susceptibility evaluation factor; and S3, constructing an entropy index-
logistic regression coupling model, and performing
landslide susceptibility evaluation. According to the method, the SBAS-InSAR technology is used for collecting deformation information of the long-time-sequence
earth surface, the deformation rate in the maximum
gradient direction serves as a
landslide susceptibility evaluation factor, evaluation and optimization are conducted on the
landslide susceptibility based on the entropy index-
logistic regression coupling model, and the prediction precision of the model on the landslide susceptibility is remarkably improved.