Abstract Sentinel‐1's continuous observation program over all major plate boundary regions makes it well suited for earthquake studies. However, decorrelation due to large displacement gradients and limited azimuth resolution of the Terrain Observation by Progressive Scan (TOPS) data challenge acquiring measurements in near field many ruptures prevent displacements along‐track direction. Here we propose fully exploit coherent incoherent information TOPS using standard interferometric...

The Sichuan–Tibet Railway (STR), as the second railway connecting Tibet Autonomous Region with rest of China, is recognized a historical challenging project. There are widely distributed geohazards (e.g., landslides, sand-sliding slopes, collapses, ice avalanches, and debris flows) along STR due to significantly undulating terrains, unfavorable geological conditions, intense tectonic movements. Therefore, it necessary identify potential threats for construction regular operation STR....

To meet the growing demand for socioeconomic development, a large amount of groundwater is extracted from confined aquifers worldwide. The North China Plain has experienced considerable depletion and subsidence during past six decades. In this study, we use Sentinel-1A/B SAR images 2015 to 2020 map ground Tianjin–Langfang area. Three subsiding zones centered at Guangyang, Wuqing–Bazhou, Jinghai are identified with maximum rates 98.1, 121.8, 104.7 mm/yr. Seasonal long-term signals separated...

Polysulfone (PSF) medical waste can be effectively repurposed due to its excellent mechanical properties. Due the increasing need for load-bearing bone implants, it is crucial prioritize development of biocompatible polymer-matrix composites. Calcium silicate (CaSi), known osteogenesis and antibacterial properties, widely used in applications. In this study, recycled PSF plastics fiber or nanoparticle forms commercial products were create PSF-based composites filled with three different...

Landslides constitute a major threat to people’s lives and property in mountainous regions such, as the Three Gorges area China. Synthetic Aperture Radar Interferometry (InSAR) with its wide coverage unprecedented displacement measuring capabilities has been widely used landslide monitoring. However, it is difficult apply traditional InSAR techniques investigate landslides having large deformation gradients or moving primarily north-south direction. In this study, we propose time series...

For InSAR topographic mapping, multi-baseline height estimation is known to be an effective way facilitate phase unwrapping by significantly increasing the ambiguity intervals and maintaining good measurement sensitivity, especially in mountainous areas. In this paper, efficient SAR interferometry approach based on maximum likelihood developed for refined mapping algorithm, (ML) used measure details avoid complicated process. order well-adapted terrain conditions, prior probability...

The Surface Water and Ocean Topography (SWOT) mission represents a collaborative effort between physical oceanography hydrology fields, aimed at exchanging detailed topography information characterized by its high precision in vertical measurements extensive spatial detail. This data is generated scientific payload, with the Ka-band radar Interferometer (KaRIn) serving as primary tool. However, smaller incidence angle increases layover regions, introducing noise during observations. Focused...

Over exploitation of groundwater in Changzhou city, China can cause land deformation, which turn proves detrimental to the urban infrastructure. In this study, multi-band synthetic aperture radar (SAR) data sets (C-band Envisat ASAR, L-band ALOS PALSAR, and X-band COSMO-SkyMed) acquired from 2006 2012 were analysed using interferometry (InSAR) time-series method investigate relationship between spatial–temporal distribution deformation exploitation. Annual rate inferred interferograms ranges...

Lunar-based synthetic aperture radar repeat-track interferometry (LB-SAR RTI) is expected to play a significant role in addressing science issues pertaining Earth dynamics because of its large-scale, long-term, and stable observation (EO) ability. The distribution the spatiotemporal baseline effective spatial coverage are great importance mode design data acquisitions plan LB-SAR RTI. Here, we describe geometry present calculation method Using Jet Propulsion Laboratory DE430 ephemeris,...

Phase unwrapping is an imperative step in interferometry processing that has a significant influence on the quality of subsequent products. Many existing phase algorithms have been designed to solve for unwrapped under assumption noisy areas with discontinuities are small or reliable continuity can be recovered there. They attempt restore by using and data measures, such as residues. However, when observing field divided into separate zones continuous due large range noise, those caused...

We address the processing of interferometric TerraSAR-X and TanDEM-X spotlight data. Processing steps necessary to derive interferograms at high spatial resolution from bi- monostatic satellite images will be explained. The image mode is a beam steering technique focusing antenna on specific ground area. This results in linear Doppler shift frequency azimuth direction, which has matched master image. While shifting interpolation kernel during resampling, spectrum slave aligned show how...

The European Space Agency's Sentinel-1 mission, a constellation of two C-band synthetic aperture radar (SAR) satellites, utilizes terrain observation by progressive scan (TOPS) antenna beam steering as its default operation mode to achieve wide-swath coverage and short revisit time. during the TOPS acquisition provides means measure azimuth motion using phase difference between forward backward looking interferograms within regions burst overlap. Hence, there are spectral diversity...

Built-up areas are typical man-made structure in urban environment, and timely accurately acquiring built-up area layers can provide necessary geo-spatial information for planners policymakers. In this paper, a data field-based method is proposed the automated detection of from high-resolution satellite images. This views local corner features buildings as mass points models their spatial interaction distribution by potential function. Due to salient differences between non-built-up areas,...

Persistent Scatterer Interferometry (PS-InSAR) is applied to derive displacement information with millimetric precision. Analyzing stable persistent scatterers from a large stack of SAR images,helps overcome the geometrical and temporal decorrelation, which occur when using differential interferometry. The removal topographic phase an external DEM seems cause problems. In our experiment, we select three different DEMs: ASTER GDEM, derived digitized map, SRTM-3 in order analyze influence...

Zero Doppler centroid imaging is of great significance in synthetic aperture radar interferometry (InSAR). Because the moon's orbit elliptical and its orientation cannot be changed artificially, zero lunar-based (LB-SAR) not steerable will vary with lunar rotation SAR system's position on surface. Therefore, distribution LB-SAR provide an important reference for observation model design LB-SAR/InSAR. In this letter, we propose a calculation method by using Jet Propulsion Laboratory...