Title :
Propagation modeling for precision distance measurements
Author :
Telikepalli, R. ; Tranquilla, J.M.
Author_Institution :
CAL Corp., Ottawa, Ont., Canada
Abstract :
Accuracy in distance measurements plays an important role in radio positioning systems. A propagation model is developed to define velocities of propagation based on energy flow concepts derived from fluid flow analogy. A comparison of this method with the conventional method is presented. This model can be used to increase the precision of distance measurements. The energy propagation is represented by energy flow lines for satellite based radio positioning systems using a quadrifilar helix as a base station receiving antenna in the L-band.
Keywords :
distance measurement; helical antennas; microwave antennas; radio direction-finding; radionavigation; radiowave propagation; receiving antennas; satellite antennas; satellite navigation; L-band; base station receiving antenna; distance measurements; energy flow concepts; fluid flow analogy; precision distance measurements; propagation modeling; propagation velocities; quadrifilar helix; radio positioning systems; satellite based radio positioning systems; Antenna measurements; Antennas and propagation; Distance measurement; Electromagnetic propagation; Fluid flow; Helical antennas; Phase measurement; Position measurement; Time measurement; Velocity measurement;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1996. AP-S. Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-3216-4
DOI :
10.1109/APS.1996.549732
