Alan K Chen

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Her current research interests include Galileo signal and code structures, GNSS receiver architectures, and GPS modernization. which develops satellite navigation systems based on the Global Positioning System (GPS). He has been involved in the development of WAAS and LAAS for the FAA. Per has received the Kepler, Thurlow and Burka Awards from the ION for(More)
OBJECTIVE To compile current legislation of indoor tanning throughout the world and compare them with existing legislation found in 2003. DESIGN Cross-sectional study. SETTING International. PARTICIPANTS All nations with legislation regarding access to indoor tanning found through web-based Internet search. MAIN OUTCOME MEASURES Number of nations(More)
at Boulder and holds a visiting professor appointment at Luleå University of Technology and a consulting professor appointment with Stanford University. which develops satellite navigation systems based on the Global Positioning System (GPS). He has been involved in the development of WAAS and LAAS for the FAA. Per has received the Kepler, Thurlow and Burka(More)
InsideGNSS 37 O n April 14, 2007 (local time), China launched the Compass M-1 satellite. This satellite represents the first of a new global navigation satellite system (GNSS) that is planned to have a total of 35 satellites. Unlike prior Chinese navigation satellites, Compass M-1 broadcasts in L-band, using signal structures similar to other GNSS systems(More)
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