Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Byung-Kyu Choi"'
Autor:
Jin Choi, Jung Hyun Jo, Eun-Jung Choi, Jiwoong Yu, Byung-Kyu Choi,, Myung-Jin Kim, Hong-Suh Yim,, Dong-Goo Roh, Sooyoung Kim, Jang-Hyun Park, Sungki Cho
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 37, Iss 2, Pp 105-115 (2020)
The Korean Institute of Technology Satellite (KITSAT-1) is the first satellite developed by the Satellite Technology Research Center and the University of Surrey. KITSAT-1 is orbiting the Earth’s orbit as space debris with a 1,320 km altitude afte
Externí odkaz:
https://doaj.org/article/f0f3fcb5b903497da64e02dc2533dde7
Publikováno v:
Sensors, Vol 21, Iss 13, p 4493 (2021)
We investigated decaying post-seismic deformation observed on the Korean Peninsula associated with the 2011 Mw 9.0 Tohoku-Oki earthquake using Global Navigation Satellite System (GNSS). The GNSS velocity vectors were estimated in five periods from 20
Externí odkaz:
https://doaj.org/article/43a35ace770d46daafac12c9813efeee
Publikováno v:
Remote Sensing, Vol 12, Iss 20, p 3365 (2020)
The Korean government has a plan to build a new regional satellite navigation system called the Korean Positioning System (KPS). The initial KPS constellation is designed to consist of seven satellites, which include three geostationary Earth orbit (
Externí odkaz:
https://doaj.org/article/ce8fb058edcc447694e078cfe267571e
Publikováno v:
Remote Sensing, Vol 12, Iss 21, p 3510 (2020)
Choi et al. (2019) suggested that ionospheric total electron content (TEC) and receiver differential code bias (rDCB) stability have a strong correlation during a period of two years from 2014 to 2016. This article is a response to Zhong et al. (2020
Externí odkaz:
https://doaj.org/article/7884642793914ef8b87f464b3eddd8cb
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 32, Iss 4, Pp 403-409 (2015)
The Quasi-Zenith Satellite System (QZSS), a dedicated regional Japanese satellite system currently under development, was designed to complement the performance of the Global Positioning System (GPS). The high elevation angle of the QZSS satellite
Externí odkaz:
https://doaj.org/article/dbd12f7eeeb1468fb64ab14a3dff1179
Autor:
Jong-Kyun Chung, Byung-Kyu Choi
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 32, Iss 4, Pp 335-340 (2015)
Using the Total Electron Content (TEC) data from the Global Navigation Service System (GNSS) site in Jeju, operated by the Korea Astronomy and Space Science Institute (geographic location: 33.3° N, 126.5° E; geomagnetic location: 23.6° N) for 200
Externí odkaz:
https://doaj.org/article/285b0a0d05b548a8b9174c114cbe1097
Publikováno v:
Sensors, Vol 20, Iss 15, p 4261 (2020)
We estimate precipitable water vapor (PWV) from data collected by the low-cost Global Navigation Satellite System (GNSS) receiver at a vessel. The dual-frequency GNSS receiver that the vessel ISABU is equipped with that is operated by the Korea Insti
Externí odkaz:
https://doaj.org/article/6d20ad1fb2e445d08b7316f7eedff9a0
Autor:
Kyoung-Min Roh, Byung-Kyu Choi
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 31, Iss 1, Pp 41-50 (2014)
The Earth is not perfectly spherical and its rotational axis is not fixed in space, and these geophysical and kinematic irregularities work as dominant perturbations in satellite orbit propagation. The International Earth Rotation Service (IERS) pr
Externí odkaz:
https://doaj.org/article/625314be51234cd092a478a22f7f497b
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 30, Iss 3, Pp 207-212 (2013)
Ionosphere is one of the largest error sources when the navigational signals produced by Global Positioning System (GPS) satellites are transmitted. Therefore it is very important to estimate total electron contents (TEC) in ionosphere precisely fo
Externí odkaz:
https://doaj.org/article/da12b9f6f51842f29ae926513c7901aa
Autor:
Jakyoung Nah, Jung-Guen Jang, Bi-Ho Jang, In-Woo Han, Jeong-Yeol Han, Kwijong Park, Hyung-Chul Lim, Sung-Yeol Yu, Eunseo Park, Yoon-Kyung Seo, Il-Kwon Moon, Byung-Kyu Choi, Eunjoo Na, Uk-Won Nam
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 30, Iss 1, Pp 49-58 (2013)
ARGO-M is a satellite laser ranging (SLR) system developed by the Korea Astronomy and Space Science Institute with the consideration of mobility and daytime and nighttime satellite observation. The ARGO-M optical system consists of 40 cm receiving
Externí odkaz:
https://doaj.org/article/0481fc892f704d479ee4dbc20a283b9a