Real GPS Data collected in Downtown Ottawa

This file contains real GNSS data collected from a suburban region to a dense urban region in Ottawa. For the interest of the work, only GPS data are collected. The data are collected using two Ublox GNSS units (receivers), namely EVK-M8T and EVK-M8U. EVK-M8T is a timing product that can provide precise timing information for post-processing. EVK-M8U is a product that features dead reckoning mode, making this product reliable even in urban canyons. The data are in the format of UBX, NAV, and OBS. The UBX file is outputed directly by the receiver using u-center (software). The NAV file is converted from the UBX file using RTKLIB, which is an open source program package for GNSS positioning. This file contains data about satellite navigation messages, such as the Keplerian parameters, the ionospheric parameters, etc. The OBS file is also converted from the UBX file using RTKLIB.This file contains the observations about satellite, such as pseudorange, PRN code, etc.