A sea area performance evaluation method and system based on geospatial analysis technology

Abstract

The application provides a sea area efficiency evaluation method and system based on geospatial analysis technology, which comprises the following steps: acquiring multi-source evaluation indexes of each unit, calculating first-order statistical moments, calculating spatial Gini coefficients and local information entropy of each index domain, correcting a preset resolution coefficient by using the local information entropy when the Gini coefficient exceeds a threshold, calculating deviation sequences of each unit index value and neighborhood first-order statistical moments, setting an asymmetric processing function according to the local information entropy, amplifying the absolute value of a negative deviation by using an exponential function, and compressing the value of a positive deviation by using a logarithmic function, wherein the local information entropy is positively correlated with the base number of the function, calculating an initial efficiency value based on the processed deviation sequences and the corrected resolution coefficient by using a comprehensive grey correlation degree, calculating a local Moran index based on the initial efficiency value to determine a spatial clustering type, correcting the resolution coefficient twice according to the spatial clustering type, recalculating the comprehensive grey correlation degree, and obtaining a sea area efficiency evaluation result.