Alan Chen

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—With the launch of the Compass-M1 satellite on 14 April 2007, China is set to become the latest entrant into global navigation satellite systems (GNSS). Understanding the interoper-ability and integration of the Chinese Compass with the current GNSS, namely the U.S. Global Positioning System (GPS), the Eu-ropean Galileo, and the Russian GLONASS, requires(More)
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)
This paper describes an algorithm that tracks and localizes a helicopter using a ground-based trinocular camera array. The three cameras are placed independently in an arbitrary arrangement that allows each camera to view the helicopter's flight volume. The helicopter then flies an unplanned path that allows the cameras to self-survey utilizing an algorithm(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)
This paper describes an algorithm that tracks and localizes a helicopter using a ground-based trinocular camera array. Using background differencing and a Kalman filter, the helicopter is found in each of the camera images. The location of the moving helicopter in each image is then used to self-calibrate the relative positions and orientations of each of(More)
Today's cyber-physical (CP) electronic system design includes hardware and software with intelligent sensing and controls. Those CP future applications use high definition images, videos and context information with interactions to the physical world through sensors and actuators. Senior level courses including embedded controls, FPGA design, and server(More)
A Self-surveying Camera Array (SSCA) is a vision-based local-area positioning system consisting of multiple ground-deployed cameras that are capable of self-surveying their extrinsic parameters while tracking and localizing a moving target. This paper presents the self-surveying algorithm being used to track a target helicopter in each camera frame and to(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)
I am interested in the agile control of robot motion. This encompasses both analysis (biomechanics, inverse control) and synthesis (integrated motion planning and optimal control). 2008-Present Research Fellow Studying optimal control and planning methods so as to leverage analytic models along with probabilistic system identification for agile system(More)
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