Differential Interferometric Synthetic Aperture Radar (DInSAR) techniques have been recognised as an ideal tool for many ground deformation monitoring applications. However, the spatially and temporally variable delay of the radar signal propagating through the atmosphere is a major limitation to accuracy. The dominant factor to be considered is the tropospheric heterogeneity, which can lead to...

[1] What happens in the crust as a result of geodetically observed secular motions? In this paper we find out by distorting a finite element model of California using GPS-derived displacements. A complex model was constructed using spatially varying crustal thickness, geothermal gradient, topography, and creeping faults. GPS velocity observations were interpolated and extrapolated across the mo...

GPS satellite simulator test facilities are used to checkout the software and hardware of GPS receivers and their augmentation systems. In general, they include satellite signal simulators, differential augmentation simulators and interface emulators. All testing is run in real time and requires considerable hardware and human assets. Initially, the dynamic scenario to be simulated must be desi...

The UNSW-designed GPS volcano monitoring system installed on Gunung Papandayan seeks to characterise the ground deformation within the volcanic edifice. Hourly baseline solutions produce a time series of data designed to detect any ground motion. Differential tropospheric effects between GPS receivers separated by a large change in height (in this case up to 1400m) impact on the quality of this...

(PSERC). PSERC is a multi-university Center conducting research on challenges facing a restructuring electric power industry and educating the next generation of power engineers. of Entergy-New Orleans. In early stages of the project, Mr. Lance Priez of Entergy supplied needed information. The many useful suggestions of all the industrial advisors are acknowledged. Dale Bradshaw of the Tennesse...