We then use the 3D city model to detect NLOS satellites, and consequently refine the double-difference measurement vector. We create a covariance matrix for the GPS double-difference measurement ...

Akraus then converted the screenshots into vector graphics so they ... is a really nifty looking miniature city. When you look closely it's very clearly 3D printed from a rough model, but at ...

According to Ecopia, potential applications of its 3D vector maps of Canadian cities span government ... Ecopia plans to offer each mapped city a two-year license to the data to support climate ...