A5016190971- Synthetic Aperture Radar (SAR) Applications and Techniques
- Landslides and related hazards
- Soil Moisture and Remote Sensing
- Cryospheric studies and observations
- Flood Risk Assessment and Management
- Climate change and permafrost
- Advanced SAR Imaging Techniques
- Methane Hydrates and Related Phenomena
- 3D Surveying and Cultural Heritage
- Arctic and Antarctic ice dynamics
- Structural Health Monitoring Techniques
- Geophysics and Gravity Measurements
- Seismic Waves and Analysis
- Remote Sensing in Agriculture
- Soil erosion and sediment transport
- Planetary Science and Exploration
- Remote-Sensing Image Classification
- Marine and environmental studies
- Atmospheric and Environmental Gas Dynamics
- Remote Sensing and LiDAR Applications
- Precipitation Measurement and Analysis
- Soil Geostatistics and Mapping
- Remote Sensing and Land Use
- Coal Properties and Utilization
- Coastal wetland ecosystem dynamics
Canadian Space Agency
2015-2023
National Research Council Canada
2023
Romanian Space Agency
2015-2022
GeoEcoMar
2022
Advanced Science Research Center
2014
University of Calgary
2011-2014
Natural Resources Canada
2008
Abstract. Rock glaciers, composed of debris and ice, are widely distributed across cold mountain regions worldwide. Although research on rock glaciers is gaining momentum, the distinct behaviour in marginal periglacial environments remains poorly understood. In this study, we combine remote sensing situ methods to gain insights into characteristics transitional Carpathian Mountains. We applied Persistent Scatterer Interferometry (PSInSAR) Sentinel-1 images from 2015 2020 identify areas with...
Synthetic aperture radar (SAR) is more sensitive to the dielectric properties and structure of targets less affected by weather conditions than optical sensors, making it capable detecting changes induced management practices in agricultural fields. In this study, capability C-band SAR data for crop seeding harvest events was explored. The study conducted 2019 growing season Temiskaming Shores, an area Northern Ontario, Canada. Time-series acquired Sentinel-1 constellation with...
A synthetic aperture radar (SAR) data set of the Peace Athabasca Delta, Alberta, was used to evaluate approaches flooded vegetation mapping. primary objective identify how add a layer Emergency Geomatics Service (EGS) SAR-derived flood products. Field were non-flooded and vegetation. combination statistical analyses box plot visual inspection magnitude-only images, polarimetric compact parameters/decompositions, coherence products for mapping This paper provides some background on use SAR...
In this study we used differential InSAR techniques to monitor landslide slide and permafrost activity at a site along the Mackenzie Valley Pipeline Corridor. Our results that motion are about 3 times more on exposed burnt slopes than adjacent areas. The maximum is in September, probability related gradual accumulated increases soil temperatures.
Wetlands are valuable natural resources which provide numerous services to the environment. Many studies have demonstrated potential of various types remote sensing datasets and techniques for wetland mapping change analysis. However, there a relatively low number that investigated application Interferometric Synthetic Aperture Radar (InSAR) coherence products studies, especially over large areas. Therefore, in this study, entire province Alberta, Canada (~661,000 km2) were generated using...
AbstractThis study has applied persistent/permanent scatterers interferometric SAR (PSI) technology to map ground deformation in the Frank Slide area, Alberta, Canada, using RADARSAT-1 data and EarthView InSAR (EV-InSAR) coherent target monitoring (CTM) software developed by Atlantis Scientific Inc. is a rock avalanche that occurred on eastern slope of Turtle Mountain 1903 claimed more than 70 lives. At foot Mountain, surface above Mine was found subside at an average rate about 3.1 mm per...
Wetlands are dynamic environments, the water and vegetation of which can change considerably over time. Thus, it is important to investigate hydroperiod status wetlands using advanced techniques such as remote sensing technology. Wetland analysis has already been investigated optical satellite synthetic aperture radar (SAR) backscattering data. However, interferometric SAR (InSAR) coherence products have rarely used for wetland mapping. this study utilized Sentinel-1 maps produced between...
Ground and infrastructure stability are important for our technologically based civilization. Infrastructure projects take into consideration the risk posed by ground displacement (e.g., seismicity, geological conditions geomorphology). To address this risk, earth scientists civil engineers employ a range of measurement technologies, such as optical/laser leveling, GNSS and, lately, SAR interferometry. Currently there is rich source information provided in various formats that covers most...
This work focuses on monitoring the ground motion and infrastructure stability in an urban environment, namely city of Bucharest. Bucharest is a fast developing with average construction rate 8-20% new buildings respect to existing ones. Consequently, civil engineering industry faced challenges related need having taller deeper underground levels, network subway lines more bridges large diameter piles' foundations. All these works have important impact upon upper stability. The PSI...
A specific double-bounce radar backscattering mechanism observed in C-band Radarsat-2 data is used to measure water level changes areas of wetland and inundated vegetation. The backscattered SAR signal from the - vegetation double bounce usually much stronger than dry surfaces. This because smooth reflects most along a preferential direction towards canopy, as opposed ground which scatters multiple direction. As an effect, amplitude one related interferometric phase maintains coherence time,...
In this study we used differential InSAR techniques to monitor current post slide activity at several landslides along transportation and energy corridors. The landslide materials vary from rock debris, glacial till permafrost alluvium. Our results show that motion is triggered by spring melt heavy rainfall events. the northern Mackenzie Valley pipeline corridor seasonal related during warm summer months.
Monitoring land surface deformation is one of the most reliable approaches that can be used to study, manage and forecast several geohazards (such as subsidence, landslide, sinkholes, etc.) linked either natural or anthropogenic driving forces. The importance such tools becomes more visible in urban environments where hazards would have aggravated consequences. Within this framework, a combined in-situ remote sensing monitoring approach, support physically based assessment deformations...
The region of interest is located approximately in the downstream part Mackenzie River, Canada. Our study focuses on guidelines to process RADARSAT-1 interferometric C-band data a permafrost environment and monitor activity landslide motion over 18 month period. From method (D-InSAR) ~100 interferograms, main conclusions are (1) high resolution Digital Elevation Models (DEM) shorter satellite revisit time intervals essential ensure InSAR processing accuracy for small deformations associated...
The inundation extent is derived using brightness temperature data acquired by the L-band Soil Moisture Active Passive (SMAP) satellite, to support boreal carbon studies. Exploiting capabilities penetrate clouds and vegetation SMAP's 3-day revisit, product may complement high-spatial resolution optical products in high latitudes. quality of assessed comparing with following sets: 3-m maps Radarsat synthetic aperture radar (SAR) northern Canada multi-sensor climatology over Siberia. Initial...
The Coherent Targets Monitoring technique is providing superior ground deformation mapping compared with standard interferometry based on one pair of Master/Slave scenes. This because using a larger data set it possible to estimate and correct for additional phase error sources. Also the point targets detected as coherent are generally characterized by stronger signal that provides more accurate information than clutter present in rest scene. paper reviews previous work SAR noise estimation...
A specific double-bounce radar backscattering mechanism is used to measure water level changes in areas of wetland or inundated vegetation. The backscattered SAR signal from the water-vegetation double bounce usually much stronger than dry surfaces. As an effect, amplitude vegetation one related and interferometric phase maintains coherence time, making possible accurate measurements changes.
Mining is an important activity contributing to the economic development with long lasting environmental impacts. A major disaster took place in 2001 Ocnele Mari salt mining area located central-south part of Romania when artificial lake brine was poured rural areas, devastating homes and polluting Olt River. Towards a sustainable harmonious area, Romanian Authorities decided ecology rehabilitate it. This ongoing project focused on land degradation monitoring from disasters until now. High...
Abstract. The Canada Centre for Remote Sensing (CCRS) has over 40 years of experience with airborne and spaceborne sensors is now starting to use small Unmanned Aerial Systems (sUAS) validate products from large coverage area create new methodologies very high resolution products. Wetlands have several functions including water storage retention which can reduce flooding provide continuous flow hydroelectric generation irrigation agriculture. Synthetic Aperture Radar well suited as a tool...
Kepler Space Inc. is creating a wide area Canadian Ground Motion Service (C-GMS), initially based on time series (every 6/12 days, between 2015 and 2022) of Sentinel-1 (S-1) satellite radar data modified Persistent Scatterers Interferometry (PSInSAR) approach to detect map ground motion over time, with mm/year accuracy areas (up 700 km swaths). The information available through C-GMS follows the general format European Service, but additional layers depicting seasonal motion, coherent...
Inspection of temporal deformation profiles from the Luțca bridge collapse, in Romania, showed that before disaster, some PSI exhibits a pattern subsidence/uplift followed by loss coherence. In this work, it is proposed new methodology for detecting such profiles, based on removal seasonal component and piecewise linear modeling profiles. The not limited to aforementioned types method validated an area including bridge.