Title :
A vehicle location system (VLS) solution approach
Author :
Chadwick, J. Brooks ; Bricker, J.L.
Author_Institution :
Hughes Aircraft Co., Fullerton, CA, USA
Abstract :
The Hughes vehicle location system (VLS), which locates and tracks one or more asynchronous aperiodic transmitters in either two or three dimensions, is described. It uses a dynamic receiver time-of-arrival (TOA) source selection, a direct hyperbolic position location solution, and an observation noise filter. For tracking a transmitter in two dimensions in an overdetermined system, hyperbolic geometric-dilution-of-precision (GDOP) is used to select an optimum subset of TOA triplets and to form a weighted position estimate. Particular emphasis is placed on the 2-D direct solution approach. The effect of observation noise on position estimation error in 2-D for an overdetermined system is demonstrated, and the derivation of the 2-D direct solution approach is presented
Keywords :
aircraft instrumentation; computerised navigation; computerised signal processing; digital simulation; position measurement; tracking systems; 2-D direct solution; Hughes vehicle location system; asynchronous aperiodic transmitters; computerised navigation; direct hyperbolic position location; dynamic receiver time of arrival source; hyperbolic geometric-dilution-of-precision; noise; observation noise filter; position estimation error; tracking; weighted position estimate; Apertures; Clocks; Estimation error; H infinity control; Protection; Protective relaying; Relays; Transmitters; Vehicles; Working environment noise;
Conference_Titel :
Position Location and Navigation Symposium, 1990. Record. The 1990's - A Decade of Excellence in the Navigation Sciences. IEEE PLANS '90., IEEE
Conference_Location :
Las Vegas, NV
DOI :
10.1109/PLANS.1990.66166
