Results 21 to 30 of about 437 (189)

A Development of Reflector for CAL/VAL of SAR Satellite [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2009
The payload can be classified as a passive and active type. Generally radar satellite to acquire specific information through various radar images will use the SAR (Synthetic Aperture Radar) as active type payload.
Jung-Hoon Keum, Sung-Woong Ra
doaj   +1 more source

Dataset for Water Body Detection Using Satellite SAR Images [PDF]

open access: yesGeo Data, 2021
Satellite synthetic aperture radar (SAR) generates valid image information in all-weather. Thus, it can be effectively used for near real-time monitoring and damage analysis of flood areas which always involve overcast skies.
SeungJae Lee, Han Oh
doaj   +1 more source

Monitorización de infraestructuras críticas expuestas a riesgos naturales y antrópicos mediante interferometría radar de satélite [PDF]

open access: yes, 2021
[EN] Synthetic Aperture Radar Interferometry (InSAR) is a remote sensing technique very effective for the measure of smalldisplacements of the Earth’s surface over large areas at a very low cost as compared with conventional geodetictechniques.
Bakon, Matus   +12 more
core   +1 more source

Comparison of KOMPSAT-5 and Sentinel-1 Radar Data for Soil Moisture Estimations Using a New Semi-Empirical Model

open access: yesRemote Sensing, 2022
X-band KOMPSAT-5 provides a good perspective for soil moisture retrieval at high-spatial resolution over arid and semi-arid areas. In this paper, an intercomparison of KOMPSAT-5 and C-band Sentinel-1 radar data in soil moisture retrieval was conducted ...
Liangliang Tao   +3 more
doaj   +1 more source

Overview of the MOSAiC expedition: Snow and sea ice [PDF]

open access: yes, 2022
Year-round observations of the physical snow and ice properties and processes that govern the ice pack evolution and its interaction with the atmosphere and the ocean were conducted during the Multidisciplinary drifting Observatory for the Study of ...
Divine, Dmitry   +9 more
core   +4 more sources

On Small Satellites for Oceanography: A Survey [PDF]

open access: yes, 2015
The recent explosive growth of small satellite operations driven primarily from an academic or pedagogical need, has demonstrated the viability of commercial-off-the-shelf technologies in space. They have also leveraged and shown the need for development
Agelet, Fernando Aguado   +5 more
core   +3 more sources

Precise Orbit Determination of LEO Satellite Using Dual-Frequency GPS Data [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2009
KOrea Multi-purpose SATellite (KOMPSAT)-5 will be launched at 550km altitude in 2010. Accurate satellite position (20 cm) and velocity (0.03 cm/s) are required to treat highly precise Synthetic Aperture Radar (SAR) image processing.
Yoola Hwang   +3 more
doaj   +1 more source

Selection of the key earth observation sensors and platforms focusing on applications for Polar Regions in the scope of Copernicus system 2020-2030 [PDF]

open access: yes, 2019
An optimal payload selection conducted in the frame of the H2020 ONION project (id 687490) is presented based on the ability to cover the observation needs of the Copernicus system in the time period 2020–2030.
Camps Carmona, Adriano José   +6 more
core   +2 more sources

GPS-Based Orbit Determination for KOMPSAT-5 Satellite [PDF]

open access: yesETRI Journal, 2011
Korea Multi-Purpose Satellite-5 (KOMPSAT-5) is the first satellite in Korea that provides 1 m resolution synthetic aperture radar (SAR) images. Precise orbit determination (POD) using a dual-frequency IGOR receiver data is performed to conduct high-resolution SAR images.
openaire   +1 more source

Applicable Tracking Data Arcs for NORAD TLE Orbit Determination of the KOMPSAT-1 Satellite Using GPS Navigation Solutions [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2005
NORAD Two Line Element (TLE) is very useful to simplify the ground station antenna pointing and mission operations. When a satellite operations facility has the capability to determine NORAD type TLE which is independent of NORAD, it is important to ...
Byoung-Sun Lee
doaj   +1 more source

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