scholarly journals Quantitative monitoring of surface movements on active landslides by multi-temporal, high-resolution X-Band SAR amplitude information: Preliminary results

2016 ◽  
pp. 1511-1516
Author(s):  
M Mulas ◽  
A Corsini ◽  
G Cuozzo ◽  
M Callegari ◽  
B Thiebes ◽  
...  
Keyword(s):  
High Resolution ◽  
Preliminary Results ◽  
Quantitative Monitoring ◽  
X Band ◽  
Multi Temporal

Multi-temporal DInSAR analysis with X-band high resolution SAR data: examples and potential

2010 ◽  
Author(s):  
Fabio Bovenga ◽  
Davide Oscar Nitti ◽  
Alberto Refice ◽  
Raffaele Nutricato ◽  
Maria Teresa Chiaradia
Keyword(s):  
High Resolution ◽  
X Band ◽  
Multi Temporal ◽  
Sar Data

scholarly journals REPEAT-PASS INTERFEROMETRIC AND BACKSCATTER ANALYSIS OF X-BAND PAZ SATELLITE – FIRST RESULTS

2020 ◽  
Vol XLIII-B3-2020 ◽  
pp. 253-258
Author(s):  
S. Abdikan ◽  
C. Bayik ◽  
M. Ustuner ◽  
F. Balik Sanli
Keyword(s):  
High Resolution ◽  
Sand Dunes ◽  
Ground Surface ◽  
Central Anatolia ◽  
X Band ◽  
First Results ◽  
Multi Temporal ◽  
Sar Imagery ◽  
Single Polarization ◽  
New Generation

Abstract. In this paper we present the initial results of PAZ Synthetic Aperture Radar (SAR) imagery for the first time. In the study, the potential of repeat-pass high resolution PAZ images were investigated. To this aim, both linear backscatter and interferometric results were presented. We used multi-temporal X-band (3.1 cm wavelength) new generation single look complex (SLC) data from Spanish PAZ in single polarization data. PAZ is based on TerraSAR-X/TanDEM-X platform to establish a constellation with them to shorten the revisit time and increase data acquisition capacity. We applied two analysis on PAZ data to assess the performance of the satellite images. For the analysis a semi-arid and almost flat region of Central Anatolia was selected. The images are acquired in both ascending and descending orbits. Each pair has 33 days of temporal baselines. Firstly, backscatter analysis was conducted over the region for different land cover classes. Secondly interferometric analysis was applied to determine phase difference and coherence features. As the region has sand dunes, bareland and uncultivated agricultural fields the coherence analysis showed high values, while cultivated fields showed variations of coherence due to different growth of vegetation. Since the region is prone to sinkhole formation the high-resolution PAZ indicated its advantage as determining a sinkhole that has a circle shape. The displacement of ground surface is determined in line of sight direction.

scholarly journals APPLICATIONS OF MEDIUM C-BAND AND HIGH RESOLUTION X-BAND MULTITEMPORAL INTERFEROMETRY IN LANDSLIDE INVESTIGATIONS

2015 ◽  
Vol XL-1-W5 ◽  
pp. 737-743
Author(s):  
J. Wasowski ◽  
F. Bovenga ◽  
R. Nutricato ◽  
D. O. Nitti ◽  
M. T. Chiaradia
Keyword(s):  
High Resolution ◽  
Urban Areas ◽  
Regional Scale ◽  
Cost Effective ◽  
Engineering Structures ◽  
High Resolution Data ◽  
Multi Scale ◽  
Radar Images ◽  
X Band ◽  
Multi Temporal

With the increasing quantity and quality of the imagery available from a growing number of SAR satellites and the improved processing algorithms, multi-temporal interferometry (MTI) is expected to be commonly applied in landslide studies. MTI can now provide long-term (years), regular (weekly-monthly), precise (mm) measurements of ground displacements over large areas (thousands of km2), at medium (~20 m) to high (up to 1-3 m) spatial resolutions, combined with the possibility of multi-scale (regional to local) investigations, using the same series of radar images. We focus on the benefits as well as challenges of multisensor and multi-scale investigations by discussing MTI results regarding two landslide prone regions with distinctly different topographic, climatic and vegetation conditions (mountains in Central Albania and Southern Gansu, China), for which C-band (ERS or ENVISAT) and X-band COSMO-SkyMed (CSK) imagery was available (all in Stripmap descending mode). In both cases X-band MTI outperformed C-band MTI by providing more valuable information for the regional to local scale detection of slope deformations and landslide hazard assessment. This is related to the better spatial-temporal resolutions and more suitable incidence angles (40°-30° versus 23°) of CSK data While the use of medium resolution imagery may be appropriate and more cost-effective in reconnaissance or regional scale investigations, high resolution data could be preferentially exploited when focusing on urbanized landslides or potentially unstable slopes in urban/peri-urban areas, and slopes traversed by lifelines and other engineering structures.

Deforestation change detection using high-resolution multi-temporal X-Band SAR images and supervised learning classification

2016 ◽  
Author(s):  
Thiago L. M. Barreto ◽  
Rafael A. S. Rosa ◽  
Christian Wimmer ◽  
Joao B. Nogueira ◽  
Jurandy Almeida ◽  
...  
Keyword(s):  
High Resolution ◽  
Change Detection ◽  
Supervised Learning ◽  
Sar Images ◽  
X Band ◽  
Multi Temporal

Signature of Transpressional Tectonics in the Holocene Stratigraphy of Lake Azuei, Haiti: Preliminary Results From a High-Resolution Subbottom Profiling Survey

2018 ◽  
Author(s):  
Marie-Helene Cormier ◽  
Heather Sloan ◽  
Dominique Boisson ◽  
Britta Brown ◽  
Kelly Guerrier ◽  
...  
Keyword(s):  
High Resolution ◽  
The Holocene ◽  
Preliminary Results ◽  
Holocene Stratigraphy ◽  
Subbottom Profiling

Experimental Validation of Conifer and Broad-Leaf Tree Classification Using High Resolution PolSAR Data above X-Band

2019 ◽  
Vol E102.B (7) ◽  
pp. 1345-1350 ◽  
Author(s):  
Yoshio YAMAGUCHI ◽  
Yuto MINETANI ◽  
Maito UMEMURA ◽  
Hiroyoshi YAMADA
Keyword(s):  
High Resolution ◽  
Experimental Validation ◽  
X Band ◽  
Broad Leaf

scholarly journals Cloud Computation Using High-Resolution Images for Improving the SDG Indicator on Open Spaces

2020 ◽  
Vol 12 (7) ◽  
pp. 1144
Author(s):  
Rosa Aguilar ◽  
Monika Kuffer
Keyword(s):  
High Resolution ◽  
Open Space ◽  
Local Planning ◽  
Open Spaces ◽  
High Resolution Imagery ◽  
Coarse Spatial Resolution ◽  
Multi Temporal ◽  
High Resolution Images ◽  
Cloud Computation

Open spaces are essential for promoting quality of life in cities. However, accelerated urban growth, in particular in cities of the global South, is reducing the often already limited amount of open spaces with access to citizens. The importance of open spaces is promoted by SDG indicator 11.7.1; however, data on this indicator are not readily available, neither globally nor at the metropolitan scale in support of local planning, health and environmental policies. Existing global datasets on built-up areas omit many open spaces due to the coarse spatial resolution of input imagery. Our study presents a novel cloud computation-based method to map open spaces by accessing the multi-temporal high-resolution imagery repository of Planet. We illustrate the benefits of our proposed method for mapping the dynamics and spatial patterns of open spaces for the city of Kampala, Uganda, achieving a classification accuracy of up to 88% for classes used by the Global Human Settlement Layer (GHSL). Results show that open spaces in the Kampala metropolitan area are continuously decreasing, resulting in a loss of open space per capita of approximately 125 m2 within eight years.

scholarly journals Morphokinematic properties of the 21 micron source IRAS 22272+5435

2011 ◽  
Vol 7 (S283) ◽  
pp. 458-459
Author(s):  
Jun-ichi Nakashima ◽  
Sun Kwok ◽  
Bosco H. K. Yung ◽  
Yong Zhang ◽  
Nico Koning ◽  
...  
Keyword(s):  
High Resolution ◽  
Angular Size ◽  
Mid Infrared ◽  
Preliminary Results ◽  
Molecular Envelope

AbstractWe obtained a high-resolution CO map of IRAS 22272+5435 in the CO J = 2–1 line using CARMA. The target exhibits a second biggest angular size of the circumstellar molecular envelope among known 21 μm sources. In the preliminary results, we found that the CO properties of IRAS 22272+5435 is clearly different from those of IRAS 07134+1005, which is another well-investigated 21 μm source. For example, elongations seen in the mid-infrared and CO images are extended in mutually perpendicular directions, although in case of IRAS 07134+1005 the CO feature coincides well with the mid-infrared structure.

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