Positioning is the accurate determination of the location of an object in space, relative to a framework or datum. In geographic / hydrographic information positioning is always present to determine the location of whatever we are measuring.
Depending on the type of application the framework can be global or local. When used globally techniques such as GNSS are used and the framework is defined by geodetical coordinate reference systems. Local positioning can be done on a jobsite such as in construction and engineering with total station but in for indoor navigation.
Deformation monitoring of glaciers is of great value to scientists with an interest in climate change. Due to the slow movements of glaciers, a semi-permanent deformation system is the best method to ...
Nepal is prone to earthquakes and throughout the centuries the country’s capital city, Kathmandu, has been regularly struck by earthquakes which appear to have similar epicentres and behaviour. The ...
In 1998 the Government of India Department of Science & Technology (DST) launched a National GPS Programme for Earthquake Hazard Assessment. The recent major earthquakes in the South East Asian region...
Lying in one of the most tectonically active zones in the Alpine-Himalayan belt, Iran frequently suffers from heavy and disastrous earthquakes. To monitor surface displacement and measure velocity and...
Diverse environmental effects, climatic changes and human alterations of the ecosystems are deeply changing Earth’s surface processes and creating environmental challenges that researchers are strug...
As we head towards Brexit in 2019, satellites may be in the headlines for less than positive reasons at the moment. However, what’s clear is the universal acceptance of the value, and critical need ...
Currently there are four global navigation satellite systems (GNSSs) available: GPS, Glonass, BeiDou and Galileo. The satellites of these systems are used for positioning, and the accuracy is greatly ...
Have you ever wondered about the GPS signal-tracking capabilities ‘L1P, L2E'? One of our readers asked our specialist for an explanation, and this is what he replied. We received the following quest...
With spoofing attacks on the rise, survey-grade GNSS receivers need to be protected by interference mitigation technology utilizing the latest security techniques to ensure reliable positioning. The s...
It is likely to be 2012 before the Galileo system itself is fully operational on a stand-alone basis, says this month’s interviewee Owen Goodman, and Galileo will never be a commercially viable serv...
Precision agriculture has considerably benefited from the use of unmanned aerial vehicles, often combined with active ranging sensors like Lidar to gather information from underneath the crops, but ex...
Digitalisation and new technologies with the ability to revolutionise the geospatial industry are creating a new playing field for mapping and surveying professionals. This evolving landscape is also ...
Mobile mapping systems usually rely on GNSS observations to maintain high positioning accuracy. Meanwhile, it is often necessary to use these systems to map areas where GNSS observations are not avail...
The demand for 3D maps of cities and road networks is steadily increasing and mobile mapping systems are often the preferred acquisition method for capturing such scenes. Manual processing of point cl...
Read this interview with Topcon's Ulrich Hermanski for his views on the current status of the surveying profession, the key advances and the future role of surveyors. Since graduating in Geomatics Eng...
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