GWIMS: a FOSS-based water infrastructure management tool

  Management of water infrastructure information in most local government authorities is carried out using manual systems which pose challenges for near real-time management of water infrastructure networks and effective decision-making. This article outlines the development of an affordable web-based tool for managing water infrastructure information in the city of Gweru, Zimbabwe. Zimbabwe is one […]

Location-based services: business insights and basic functions

  Location information provides insight into human behaviour, and is at the heart of delivering services that are relevant and convenient. Those who understand this, use location information and turn it into revenue. LBS not only drive revenue, but are also the magic ingredient which turns science fiction into reality when it comes to the […]

TrigNet, South Africa’s GNSS base station network

  The TrigNet network currently consists of 67 base stations, which have a maximum inter-station spacing distance of 300 km. The data from these base stations is streamed, via dedicated leased lines, to the NGI office in Cape Town where it is processed and made available, free of charge, to national and international users. Future […]

Ground deformation monitoring with satellite radar sensors

  In the last decade, Synthetic Aperture Radar (SAR) data have been widely used to detect and measure ground deformation phenomena. Either ground-based, airborne or satellite-borne, radar sensors paved the way to a variety of applications ranging from landslide analyses to subsidence and sinkhole monitoring. While ground-based radar became one of the main tools for […]