The Evolution of FLEPOS 3.0
A continuously operating reference station (CORS) provides GNSS data to support very accurate 3D positioning and additional geophysical applications. Flemish Positioning Services (FLEPOS) is the real-...
Positioning
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.
From GPS to GNSS
These are exciting times in satellite navigation. Selective availability for GPS switch-off has fuelled use of satellite navigation technology in professional and consumer applications and new signals...
Ready for Galileo
The full feature is online at http://member.gim-international.com/. Please subscribe for free using the Subscribe button in the left hand column. Any sub-optimal operation within the asphalt construct...
Integrating GNSS and INS
GNSS provides accurate positional information with relatively low integrity, while INS offers position and attitude information subject to drift but with relatively high integrity. Integrating the two...
Precision GPS Products
From entrepreneurs to incorporation to becoming publicly traded and now ISO certified, Hemisphere GPS has evolved into a major player in the design and manufacture of precision GPS products. With corp...
Three Dimensional Query
GPS receivers, digital compasses (magnetometers) and tilt sensors (accelerometers) are increasingly implemented in state-of-the-art smartphones such as the iPhone and various Android Phones. The resul...
BeiDou Maturing Rapidly
The BeiDou Navigation Satellite System (BDS) officially started providing its service to the Asia-Pacific region on 27 December 2012. Its regional service capability is equal to that of GPS. As the th...
GNSS: Evolution or Revolution
The market for Global Navigation Satellite Systems (GNSS) has never looked so buoyant. Are we in the midst of a revolution or simply witnessing evolution pre-planned and destined to run its course? Tw...
Optimistic Outlook for Galileo
This month we bring you an extended interview with engineer Pedro Pedreira, executive director of the European Global Navigation Satellite System Supervisory Authority (GSA)since July 2005, the body c...
Towards the Democratisation of GNSS Technology
Shanghai-based CHC Navigation Technology Ltd. designs, manufactures and markets a wide range of professional GPS/GNSS solutions for the survey, construction and GIS markets. The past decade has seen t...
Product Survey GNSS Receivers
In contrast to that of 2005, this product survey on GNSS receivers does not reveal any remarkable technological break-throughs. Manufacturers are increasingly producing systems able to receive Navstar...
Optimal GCPs with Onboard GPS
The collection of Ground Control Points (GCP) for block adjustment is a costly and time-consuming operation. Onboard GPS enables a reduction in the number of GCPs without loss of accuracy. The authors...
Glonass: Dawn, Decline and Revival
GPS and GLONASS: two operational Global Navigation Satellite Systems (GNSS), one owned by US and the other by Russia - <i>I know they give me positions; I know they enable me to navigate. But why is G...
Accuracy of Geodetic GNSS Antennas
During the last decade, GNSS (Global Navigation Satellite System) technologies experienced an accelerated growth, both in terms of quantity in use and quality. The accuracy achieved by technology prov...