Engineering topics
Publications and source records attributed to Wilson, B. D..
Topics include: The Measurement (Physical retrievals based on time standards), GPS Retrieval Products, Retrievals and Radiances: CLARREO Mission, GPS RO and AIRS, GPS RO and Microwave, GPS RO and Radiosondes, GPS/GNSS Science, and Conclusions.
We will discuss a new data assimilation model of ionosphere, the Global Assimilative Ionosphere Model (GAIM), capable of integrating measurements from GPS and other sensors with a physics-based ionospheric model, to provide detailed global nowcasts of ionospheric structure, useful for science and applications.
A three-dimensional (3-D) Global Assimilative Ionospheric Model (GAIM) is currently being developed by a joint University of Southern California and Jet Propulsion Laboratory (JPL) team. To estimate the electron density on a global grid, GAIM uses a first-principles ionospheric physics model and the Kalman filter as one of its possible estimation techniques.
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In this paper we report on recent developments we made concerning a WADGPS ionospheric model. The new model is a simple extension of the currently used single- shell ionospheric model.
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The global evolution of two major ionospheric storms, occurring on November 4, 1993 and November 26, 1994, respectively, is studied using measurements of total electron content (TEC) obtained from a worldwide network of ground-based GPS receivers.
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In this paper we describe the system architecture, algorithms, and preliminary results from an operating prototype Wide Area Differential GPS (WADGPS) system spanning the continetal US (CONUS).
A globally distributed network of dual-frequency GPS receivers currently exists and enables the monitoring of ionospheric total electron content (TEC) on global scales.
The Federal Aviation Administration's wide-area augmentation system (WAAS) for GPS positioning requires near real-time calibration of ionospheric vertical delays at a set of Earth-fixed grid points.