# Automated Processing of Declassified KH-9 Hexagon Satellite Images for Global Elevation Change Analysis Since the 1970s

> Research article (Frontiers in Earth Science, 2020) · cited 112× · AI/ML

**Wikidata**: [openalex:W3104774776](https://www.wikidata.org/wiki/openalex:W3104774776)  
**Source**: https://4ort.xyz/entity/automated-processing-of-declassified-kh-9-hexagon-satellite-images-for-global-elevation-change-analysis-since-the-1970s