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What parameters affects generation DEM from SAR satellite images?

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The generation of Digital Elevation Models (DEMs) from SAR satellite images is influenced by various parameters. Cross-correlation settings and spatial resolution determination significantly impact DEM accuracy . Additionally, interferometric SAR image noise affects the efficiency of phase unwrapping and, consequently, DEM generation . Coherence values, dependent on baseline, wavelength, and temporal resolution, play a crucial role in the accuracy of the generated DEM . In mountainous areas, the sensitivity of height measurement and reliability of phase unwrapping pose challenges, which can be addressed by utilizing multi-baseline InSAR processing frameworks for improved DEM quality . Furthermore, utilizing multi-aspect SAR imagery for DEM generation through radargrammetry offers a new approach to obtaining height information directly from imaging positions' offsets, enhancing the observation resolution .

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Book Chapter•DOI Satellite Radar Interferometry for DEM Generation Using Sentinel-1A Imagery Chetna Soni, Arpana Chaudhary, Uma Sharma, Chilka Sharma - Show less +3 more 01 Jan 2021 4 Citations	Parameters affecting DEM generation from SAR satellite images include baseline, wavelength, temporal resolution, and coherence. Coherence values above 0.5 correspond to accurate elevation values.
Proceedings Article•DOI InSAR Image Denoising Filter for Accurate DEM Generation M. S. Hamid, Mohammed Safy - Show less +1 more 07 Jul 2020 1 Citations	The optimization of a grey-scale soft morphological filter using genetic algorithm affects DEM generation from SAR satellite images by enhancing phase unwrapping efficiency and reducing noise for accurate results.
Open access•Journal Article•DOI Quality Assessment of DEM Generated from SAR Radargrammetry Based on Cross-Correlation and Spatial Resolution Setting Rahmat Arief, Andie Setiyoko, Andie Setiyoko, Rachmat Maulana, Shadiq Ali, Dodi Sudiana, Aniati Murni Arymurthy - Show less +6 more 01 May 2019 4 Citations	Cross-correlation threshold and spatial resolution setting significantly affect DEM generation accuracy from SAR satellite images, impacting data volume and computational effort.
Journal Article•DOI Cascaded multi-baseline interferometry with bistatic TerraSAR-X/TanDEM-X observations for DEM generation Yuting Dong, Yuting Dong, Lu Zhang, Houjun Jiang, Timo Balz, Mingsheng Liao - Show less +5 more 01 Jan 2021-Isprs Journal of Photogrammetry and Remote Sensing 4 Citations	Parameters affecting DEM generation from SAR satellite images include baseline configurations, phase unwrapping reliability, layover/shadow distortions, and iterative multi-baseline processing for improved accuracy and resolution.

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