The Global Positioning System (GPS) is a U.S. military system made possible by 24 satellites in precise orbits circling the earth's surface twice daily (Garmin Corporation@, 1998; Connolly, 1998). GPS technology has been in widespread use in the civilian sector for most of the last decade. Nevertheless, it is not often considered for lake mapping because it is not as precise as traditional surv...

In November 2003, the City of Hamilton, Ontario, Canada equipped five solid waste collection trucks with Trimble Telvisant CrossCheck® GPRS 1900 Mobile data recorders. Three of the trucks are garbage packers, the fourth truck is a side-loading recycling truck, and the fifth vehicle is a 60/40-split co-collection truck equipped with a cart lifter. These trucks operated in a variety of situations...

In order to confirm the prediction of the General Theory of Relativity that space and time are relative and that matter warps a dynamic space-time continuum that surrounds it, Einstein suggested two optical tests: one being the gravitational deflection of starlight, and the second being the gravitational red shift. The tests confirmed the predictions of the General Theory of Relativity. The obs...

Fault slip rate estimates along the Altyn Tagh and Kunlun strike-slip faults in northern Tibet vary considerably between short-term geodetic and long-term geologic studies. Here we reanalyze and model all global positioning system (GPS) data from northern Tibet to determine if these differences might be explained by previously unmodeled transient processes associated with the earthquake cycle, ...

We have examined the ionospheric plasma irregularities that were recorded by using three ground-based receivers of the global positioning system (GPS) located at Brazilian longitudes during the period of a complete solar cycle, 1995–2005. The statistic results show that ionospheric irregularities are very easy to occur in December solstice months but rare to occur in June solstice months. Besid...

In this contribution we give a brief review of the theory of integer estimation as it has been developed for use with the Global Positioning System (GPS). First we consider the GPS observation equations (GPS and Integers). These observation equations are not of the usual type, since some of the parameters are known to be integer. This implies that an extention of ’classical’ adjustment theory i...

Accurate navigation on the moon, Mars, or any other astronomical body is essential to scientific investigation. The research presented in this paper covers the constellation design of a Lunar Global Positioning System (GPS) using the CubeSat platform. Since CubeSats have significantly smaller dimensions than most current satellites, their associated cost is much less to place into orbit. This c...

We propose to develop “SuomiNet”, a universitybased, real-time, national Global Positioning System (GPS) network for atmospheric research and education. The proposed network, named to honor meteorological satellite pioneer Verner Suomi, will exploit the recently-shown ability of ground-based GPS receivers to make thousands of accurate upper and lower atmospheric measurements per day. SuomiNet’s...

Master of Electrical Engineering Program Cornell University Design Project Report Project Title: Ionospheric irregularities as observed from the GPS reference station in Singapore, March 2002 Author: Pongabha Abhakara Abstract: In regions near the geomagnetic equator, the phenomenon of ionospheric irregularities that causes scintillations in Global Positioning System (GPS) signals occurs freque...