The SWAP EUV Imaging Telescope Part I: Instrument Overview and Pre-Flight Testing     

D. B. Seaton  D. Berghmans  B. Nicula  J.-P. Halain  A. De Groof  T. Thibert  D. S. Bloomfield  C. L. Raftery  P. T. Gallagher  F. Auchère  J.-M. Defise  E. D’Huys  J.-H. Lecat  E. Mazy  P. Rochus  L. Rossi  U. Schühle  V. Slemzin  M. S. Yalim  J. Zender 《Solar physics》2013,286(1):43-65

The Sun Watcher with Active Pixels and Image Processing (SWAP) is an EUV solar telescope onboard ESA’s Project for Onboard Autonomy 2 (PROBA2) mission launched on 2 November 2009. SWAP has a spectral bandpass centered on 17.4 nm and provides images of the low solar corona over a 54×54 arcmin field-of-view with 3.2 arcsec pixels and an imaging cadence of about two minutes. SWAP is designed to monitor all space-weather-relevant events and features in the low solar corona. Given the limited resources of the PROBA2 microsatellite, the SWAP telescope is designed with various innovative technologies, including an off-axis optical design and a CMOS–APS detector. This article provides reference documentation for users of the SWAP image data.  相似文献   

Ionospheric delay gradient model for GBAS in the Asia-Pacific region     

Saito  Susumu  Sunda  Surendra  Lee  Jiyun  Pullen  Sam  Supriadi  Slamet  Yoshihara  Takayuki  Terkildsen  Michael  Lecat  Frédéric 《GPS Solutions》2017,21(4):1937-1947

GPS Solutions - We investigated characteristics of anomalous spatial gradients in ionospheric delay on GNSS signals in the Asia-Pacific (APAC) low-magnetic latitude region in the context of the...  相似文献