%0 Journal Article %@ 1048-5104 %A Groves, PD %A Wang, L %A Ziebart, M %D 2012 %F discovery:1344842 %J GPS World %N 2 %P 14 - 18+27 %T Shadow matching: Improved GNSS accuracy in Urban canyons %U https://discovery.ucl.ac.uk/id/eprint/1344842/ %V 23 %Z Full text made available by kind permission of Editor