Title :
A stepped-frequency continuous wave ranger for aiding pedestrian navigation
Author :
Downey, J. ; Paramesh, Jeyanandh ; Stancil, D. ; Mukherjee, Tridib
Author_Institution :
Carnegie Mellon Univ., Pittsburgh, PA, USA
Abstract :
Pedestrian navigation is readily enabled by GPS in outdoor environments. However, there are many locations - indoors, urban canyons and underground - where the GPS signal is unreliable or unavailable. Compact, MEMS inertial navigation, augmented by a Shoe Ranging Sensor (SRS) that measures scalar range between shoes, greatly reduces navigational error over large distances in simulations. Existing sensors have insufficient measurement dynamic range or environmental resiliency. Here, the authors report on an SRS based on stepped-frequency continuous wave radar with RMS ranging accuracy of 0.59 mm and 1 m range. This is an order-of-magnitude more accuracy over recent ultra-wideband rangers.
Keywords :
distance measurement; footwear; inertial navigation; microsensors; pedestrians; radionavigation; aiding pedestrian navigation; shoe ranging sensor; stepped frequency continuous wave ranger; Accuracy; Bandwidth; Distance measurement; Footwear; Global Positioning System; Radar; Voltage-controlled oscillators; Inertial navigation; Radar; SFCW; ranging;
Conference_Titel :
Wireless Sensors and Sensor Networks (WiSNet), 2013 IEEE Topical Conference on
Conference_Location :
Austin, TX
Print_ISBN :
978-1-4673-3104-3
Electronic_ISBN :
978-1-4673-2931-6
DOI :
10.1109/WiSNet.2013.6488623
