Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Chang-Uk Hyun"'
Publikováno v:
Sensors, Vol 23, Iss 13, p 5858 (2023)
Global navigation satellite systems (GNSSs) provide a common positioning method that utilizes satellite signals to determine the spatial location of a receiver. However, there are several error factors in standalone GNSS positioning due to instrument
Externí odkaz:
https://doaj.org/article/7b8aaa39a07a4298a688c10c8e19b946
Autor:
Hyangsun Han, Jae-In Kim, Chang-Uk Hyun, Seung Hee Kim, Jeong-Won Park, Young-Joo Kwon, Sungjae Lee, Sanggyun Lee, Hyun-Cheol Kim
Publikováno v:
GIScience & Remote Sensing, Vol 57, Iss 5, Pp 650-669 (2020)
Surface roughness of sea ice is primary information for understanding sea ice dynamics and air–ice–ocean interactions. Synthetic aperture radar (SAR) is a powerful tool for investigating sea ice surface roughness owing to the high sensitivity of
Externí odkaz:
https://doaj.org/article/f7fad788a86f424081582af1b54820aa
Autor:
Jeong-Won Park, Hyun-Cheol Kim, Anton Korosov, Denis Demchev, Stefano Zecchetto, Seung Hee Kim, Young-Joo Kwon, Hyangsun Han, Chang-Uk Hyun
Publikováno v:
Remote Sensing, Vol 13, Iss 20, p 4038 (2021)
Estimating the sea ice drift field is of importance in both scientific study and activities in the polar ocean. Ice motion is being tracked at large scale (10 km and larger) on a daily basis; however, a higher resolution product is desirable for more
Externí odkaz:
https://doaj.org/article/ad26d07a57ac4b1aacd700d14bc7762f
Publikováno v:
PLoS ONE, Vol 14, Iss 9, p e0222088 (2019)
Unmanned aerial vehicles (UAVs), so-called 'drones', have been widely used to monitor wild animals. Here, we tested a UAV with red, green, and blue (RGB) and thermal cameras to detect free-living birds in a high Arctic region in North Greenland and i
Externí odkaz:
https://doaj.org/article/c81ccaf459ab4d7cb2218e21c0567dce
Publikováno v:
Animals, Vol 10, Iss 12, p 2387 (2020)
In wildlife biology, it is important to conduct efficient observations and quantitative monitoring of wild animals. Conventional wildlife monitoring mainly relies on direct field observations by the naked eyes or through binoculars, on-site image acq
Externí odkaz:
https://doaj.org/article/eae1607adb0345b2b2502215bc0008a4
Autor:
Seung Hee Kim, Hyun-Cheol Kim, Chang-Uk Hyun, Sungjae Lee, Jung-Seok Ha, Joo-Hong Kim, Young-Joo Kwon, Jeong-Won Park, Hyangsun Han, Seong-Yeob Jeong, Duk-jin Kim
Publikováno v:
Remote Sensing, Vol 12, Iss 9, p 1378 (2020)
Backscattering coefficients of Sentinel-1 synthetic aperture radar (SAR) data of drifting multi-year sea ice in the western Beaufort Sea during the transition period between the end of melting and onset of freeze-up are analyzed, in terms of the inci
Externí odkaz:
https://doaj.org/article/6fff372e14194614b7387268b2dd2d24
Publikováno v:
Remote Sensing, Vol 11, Iss 9, p 1055 (2019)
Satellite remote sensing can be used effectively with a wide coverage and repeatability in large-scale Arctic sea-ice analysis. To produce reliable sea-ice information, satellite remote-sensing methods should be established and validated using accura
Externí odkaz:
https://doaj.org/article/9b55b12304984a22a569137ccff09ea9
Publikováno v:
Sensors, Vol 19, Iss 5, p 1251 (2019)
Observing sea ice by very high-resolution (VHR) images not only improves the quality of lower-resolution remote sensing products (e.g., sea ice concentration, distribution of melt ponds and pressure ridges, sea ice surface roughness, etc.) by providi
Externí odkaz:
https://doaj.org/article/05bde104bfd3464e8d0c28eec21e68db
Autor:
Chang-Uk Hyun, Hyun-cheol Kim
Publikováno v:
Remote Sensing, Vol 9, Iss 9, p 930 (2017)
Sea ice motion and deformation have generally been measured using low-resolution passive microwave or mid-resolution radar remote sensing datasets of daily (or few days) intervals to monitor long-term trends over a wide polar area. This feasibility s
Externí odkaz:
https://doaj.org/article/6159d72c0fda4dd59cfec06cb796134b
Publikováno v:
Sensors; Volume 23; Issue 13; Pages: 5858
Global navigation satellite systems (GNSSs) provide a common positioning method that utilizes satellite signals to determine the spatial location of a receiver. However, there are several error factors in standalone GNSS positioning due to instrument
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::3ce22716c8fd9ea174432e764bae3f69