Date of Award
Master of Science in Electrical Engineering - (M.S.)
Electrical and Computer Engineering
William N. Carr
This thesis presents a detailed derivation of a set of equations needed to locate the three dimensional position of a mobile given the locations of four fixed stations (like a global positioning system (GPS) satellite or a base station in a cell) and the signal time of arrival (TOA) from the mobile to each station. From these derived equations, a synthesizable VHDL model was developed and simulated using IEEE numen*c_std package. All the inputs and outputs were described by 32 bit vectors. From the simulations, it was observed that in the best case the mobile position was off by I meter and in the worst case the position was off by 36 meters. This model was synthesized with cadence tools and the total number of gates produced was 2.7 million.
Potluri, Sreeram, "Hyperbolic position location estimator with TDOAs from four stations" (2001). Theses. 704.