Sökning: "interferometric coherence"

Hittade 5 uppsatser innehållade orden interferometric coherence.

1. 1. Interferometric Synthetic Aperture Radar For Track Condition Monitoring. Case Study on Malmbanan

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Trafik och väg

   Författare :Kara Åmerbilly; [2021]
   Nyckelord :InSAR; railway; maintenance; underhåll; järnväg; Technology and Engineering;

   Sammanfattning : There is over 15,000 km of track in the Swedish railroad network. This network is vital for the transport of people and goods across the country. It is important that this network is monitored and maintained to ensure good function and safety. LÄS MER

3. 2. Above-ground biomass estimation in boreal productive forests using Sentinel-1 data

   Master-uppsats, Stockholms universitet/Institutionen för naturgeografi

   Författare :David Roc Roc; [2019]
   Nyckelord :synthetic aperture radar SAR ; backscatter intensity; InSAR; interferometric coherence; LIDAR; above-ground biomass; forestry;

   Sammanfattning : Estimation of biomass has high importance for economic, ecologic and climatic reasons due to the multiple ecosystem services offered by forested landscapes. Measurements that are taken in the field incur personal and economic costs. Nevertheless, biomass surveying based on remote sensing techniques offer efficiency thanks to covering large areas. LÄS MER

4. 3. Modeling of Effective Leaf Area Index

   Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Forest Resource Management

   Författare :Lina Selin; [2018]
   Nyckelord :Sentinel-1; tree species; random forest; linear discriminant;

   Sammanfattning : Mapping of e�ective leaf area index (LAIe) over the Swedish boreal forest test site Krycklan (64°N19°E) was performed using ground-based �eld estimates of LAIe and remote sensing data sources. The LAIe data were collected 2017 and 2018 using the LAI-2200 Plant Canopy Analyzer and its later version LAI-2200C Plant Canopy Analyzer. LÄS MER

5. 4. Differential Interferometry and Multiple-Aperture Interferometry for Retrieving Three-Dimensional Measurements of Glacial Surface Velocity

   Master-uppsats, Stockholms universitet/Institutionen för naturgeografi

   Författare :Luke Webber; [2016]
   Nyckelord :Differential Interferometry; Multiple-Aperture Interferometry; 3D; Glacial Surface Velocity;

   Sammanfattning : The measurement and monitoring of glacial surface velocity is important for many aspects of glaciology, such as determining the mass balance, for characterising the stability or instability of glaciers, or the identification of potential hazards from surging glaciers or Jökulhlaups, a type of glacial outburst flood. Predominately measurements of glacial surface velocity have been produced using either differential interferometry (DInSAR) applied to radar data, or offset-tracking applied to either optical or radar data. LÄS MER

7. 5. Ground-Based Synthetic Aperture Radar Data processing for Deformation Measurement

   Master-uppsats, KTH/Geodesi och satellitpositionering

   Författare :Andreas Jungner; [2009]
   Nyckelord :;

   Sammanfattning : This thesis describes a first hands-on experience working with a Ground-Based Synthetic Aperture Radar (GB-SAR) at the Institute of Geomatics in Castelldefels (Barcelona, Spain), used to exploit radar interferometry usually employed on space borne platforms. We describe the key concepts of a GB-SAR as well as the data processing procedure to obtain deformation measurements. LÄS MER