TY - GEN
T1 - Breaking the 1 meter accuracy bound in commercial GNSS devices
AU - Yozevitch, Roi
AU - Ben Moshe, Boaz
AU - Levy, Harel
PY - 2012
Y1 - 2012
N2 - Commercial GNSS devices tend to perform poorly in urban canyon environments. The buildings' density and height in such environments block the signals from many of the satellites. In this work, we present a novel yet simple approach for tackling this accuracy problem. The novelty of the suggested method lies in analyzing insufficient LOS to satellites and improving the estimated location using few shadow matching methods. Given an estimated location of the GNSS device and given the satellite signal-strength, the algorithm calculates in real-time invalid points inside the ROI (Region Of Interest). This approach reduces the ROI to a fraction of its original size. Using both simulation and field experiment we have shown that the suggested method can improve existing GNSS devices accuracy in urban canyons. Moreover, in urban regions with accurate 3D building map the positioning accuracy might break the 1 meter accuracy bound.
AB - Commercial GNSS devices tend to perform poorly in urban canyon environments. The buildings' density and height in such environments block the signals from many of the satellites. In this work, we present a novel yet simple approach for tackling this accuracy problem. The novelty of the suggested method lies in analyzing insufficient LOS to satellites and improving the estimated location using few shadow matching methods. Given an estimated location of the GNSS device and given the satellite signal-strength, the algorithm calculates in real-time invalid points inside the ROI (Region Of Interest). This approach reduces the ROI to a fraction of its original size. Using both simulation and field experiment we have shown that the suggested method can improve existing GNSS devices accuracy in urban canyons. Moreover, in urban regions with accurate 3D building map the positioning accuracy might break the 1 meter accuracy bound.
UR - https://www.scopus.com/pages/publications/84871960710
U2 - 10.1109/EEEI.2012.6376966
DO - 10.1109/EEEI.2012.6376966
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AN - SCOPUS:84871960710
SN - 9781467346801
T3 - 2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2012
BT - 2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2012
T2 - 2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2012
Y2 - 14 November 2012 through 17 November 2012
ER -