GPS-based Road Pricing

Copenhagen Demonstrates Visibility Bottleneck
Copenhagen in Denmark has conducted an experiment in alternative driving and congestion charging using car tracking based on GPS. A main limitation of GPS is that quality depends on satellite visibility, which is best when building height and density are low. Road pricing is an area in which this limitation shows. Although GPS quality alone is insufficient, GPS car tracking may become feasible when integrating (future) Global Navigation Satellite Systems and augmentation systems. A fair pricing system charges the most when a car drives through the busiest parts of an urban area and least when driving outside such areas. A... (read more)
2007-01-19 12:00:00

GPS/GLONASS RTK Receiver

The SXBlue III GNSS is a palm-sized GNSS RTK receiver that uses both GPS and GLONASS for real-time, centimetre accuracy. Via Bluetooth, it brings centimetre accuracy to any Bluetooth-compliant smartphone, handheld, tablet or notebook computer. The SXBlue III GNSS uses new, patented technology that allows it to generate corrections for both GPS and GLONASS satellite data even if the user’s reference station (or RTK Network) only supports GPS. This features opens up productivity benefits of GLONASS to all high-precision users around the world, and not just ones who have access to GLONASS-enabled reference stations. For example, a 20 year-old GPS-only... (read more)
2012-08-24 10:56:29

Trimble GPS Pathfinder ProXRT

Trimble (CA, USA) has introduced the GPS Pathfinder ProXRT receiver, a flexible GNSS receiver for GIS data collection and mapping. The receiver combines a high- performance GPS receiver with Trimble H-Star technology, OmniSTAR correction capability, and optional GLONASS capability to provide various levels of positioning accuracies, from submetre to decimetre (10cm) accuracy. The ProXRT receiver is ideal for high-accuracy mapping, data collection, and asset management applications in industries such as water/wastewater, utilities, telecommunications, transportation as well as many others. In recent years, these industries have experienced the need for subfoot and decimeter level performance.   With Trimble's patented H-Star technology,... (read more)
2008-03-04 10:37:27

A21 GPS Antenna

Hemisphere GPS has released the A21 Antenna. Agricultural vehicles and equipment, including aircraft, typically generate electrical "noise" and interference which can compromise the performance of an antenna. The A21 antenna is designed to maintain its tracking of GPS and differential correction signals in these types of environments, and in high-dynamic applications where the antenna may be turned on its side.     The A21 antenna will begin shipping in May 2009, and will be included in all Hemisphere GPS Air M3, Flying Flagman, and LiteStar IITM GPS guidance systems. Current Hemisphere GPS Air GLA-3 antenna owners can also upgrade to... (read more)
2009-04-16 03:14:02

From GPS to GNSS

Septentrio Satellite Navigation
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 and systems are reshaping the industry landscape. Septentrio has from its inception embraced new possibilities in satellite navigation. It offers receivers for professional markets, while preparing users for the GNSS of tomorrow. There have been important technological advances over the past decade in chip technology, signal and digital processing, miniaturisation and portability, all supporting the development and use of GPS. And now there are new satellite navigation signals and systems on the way.... (read more)
2007-07-07 12:00:00

Leica GPS1200+ GNSS

Four independent Global Navigation Satellite Systems (GNSS) will be operational within the near future. With the new Leica GPS1200+ users can be certain that they are ready. The Leica GPS1200+ supports the new GPS L5 signal, GLONASS L1 and L2, and will also be able to track Galileo and Compass satellites when available. The flexible design of Leica GPS1200+ is 100% future proof and is already now compatible with the four global navigation satellite systems.     GPS L5 is the new third GPS frequency which will allow increased redundancy, faster signal acquisition, and improved multipath performance - ultimately resulting... (read more)
2008-12-29 03:15:46

New GPS Satellite Operational

The fourth in a series of eight modernized Global Positioning System (GPS) satellites that will deliver new capabilities to military and civilian users has been declared fully operational. Launched from Cape Canaveral October 17, the satellite was given the all clear after an on-orbit checkout by a combined U.S. Air Force/Lockheed Martin team. Read more   The satellite joins three IIR-M satellites and 12 other operational Block IIR satellites within the current 28-spacecraft constellation. The fifth GPS IIR-M satellite is scheduled for launch on 20th December 20, 2007 from Cape Canaveral.   (read more)
2007-11-06 01:55:21

Supervisor+ GPS Tablet Computer

The SuperG, the Carlson Supervisor+ GPS Tablet, has been introduced. Carlson's Supervisor tablet computer, a rugged tablet PC that can be used anywhere, has been upgraded to include an integrated high-precision GNSS receiver and to provide wireless support for Bluetooth, 802.11, GSM, GPRS and CDMA.       The Carlson Supervisor is designed to work on more total stations, robots, GPS systems than any other solution. Both the Carlson Supervisor tablet and the new SuperG offer the industry's largest data collector screen, seven inches, that is sunlight viewable. They also supply the industry's fastest data collector processor with 64Gb of... (read more)
2012-01-25 02:34:04

GPS L-Band Threatened

The L-band, in which the GPS/GNSS L-1 signal also resides, might soon be overcrowded in several US densely populated areas. LightSquared (a Mobile-satellite service operater (MSS) and Ancillary Terrestrial Component (ATC) license holder) is seeking a reallocation of its L-band from a space service to primarily a terrestrial wireless service. Lightsquared would like to provide primarily voice and data broadband services on the L-band frequencies they currently hold a license for. This change in usage of the bandwidth together with a densely populated powerful (1500 W) transmitter network could mean that the GPS/GNSS L-1 signals are negatively influenced. This could... (read more)
2011-01-19 12:00:00

DeLorme Extends GPS Capabilities

ESRI users will now be able to view their ArcGIS Desktop projects on the DeLorme Earthmate PN-40 GPS receiver. With the Earthmate PN-40 Extension for ESRI software from DeLorme, mobile professionals can convert collected waypoints and tracks with associated comments for import into ArcGIS Desktop as shapefiles. Users can also transfer views of their projects for use in the field, display MrSID and GeoTIFF imagery files, and navigate rural terrain across DeLorme trail and road data.     This latest DeLorme solution for mobile professionals includes DeLorme USA topographic map data and supports MrSID and GeoTIFF aerial imagery files for... (read more)
2009-06-23 10:38:12
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