Using the South African GNSS network to monitor country-wide atmospheric water vapour

The South African GNSS network (TrigNet, http://www.trignet.co.za/) counts 64 stations distributed all over the country, with inter-station distances ranging from 80 km to 300 km. The network provides users with data for both real-time and post-processing applications. An example of real-time service is the provision of RTK corrections to augment the positioning precision of the […]

Towards near real-time atmospheric water vapor monitoring in Africa

Water vapour content of the atmosphere lowest layer (up to about 15 km from the ground), which is known as troposphere or neutral atmosphere, affects GNSS satellite signals propagation velocities, causing delays in their observation from ground-based stations. Based on a proper analysis of such data, one can quantify this delay and therefore have an […]