Leica GMX901 GPS Receiver

Leica Geosystems (Switzerland) has released the Leica GMX901, a GPS receiver with integrated antenna and ground plane, specially developed to monitor sensitive structures such as mines, slopes, bridges, dams and buildings. The GMX901 streams precise single frequency code and phase data up to 1 Hz, providing the basis for highly accurate position determination and deformation analysis.Designed with a focus on the essential – low power consumption, high quality measurement, simplicity, durability – the Leica GMX901 is an ideal sensor for monitoring. It has a robust housing that is water, heat, cold and vibration resistant and which can be easily mounted... (read more)
2007-05-21 03:47:36

Trimble GPS Pathfinder ProXRT Receiver

Trimble has introduced the Trimble GPS Pathfinder ProXRT receiver, a versatile decimetre receiver combining dual-frequency GPS with Trimble H-Star technology, along with optional OmniSTAR and GLONASS support. In addition, the GPS Pathfinder ProXRT receiver is now capable of tracking Galileo test satellites for signal evaluation and test purposes.   The GPS Pathfinder ProXRT receiver brings H-Star technology to the field in real time; just connect to a VRS network or a local base station correction source and collect decimetre (10 cm / 4 inch) or subfoot (<30 cm) positions in the field. If a VRS network or a local base... (read more)
2010-10-07 12:00:00

TerraSync GPS Data Collection Software

Trimble has released its new version of Trimble TerraSync software, a data collection and asset management application. TerraSync software is deployed in utilities, public sector, natural resources, and many other organizations throughout the world as a key component of enterprise Geographic Information System (GIS) data collection and asset management projects. The latest release focuses on updates requested by users to better address their changing needs.   The key enhancements include: • Intelligent data capture based on conditional attributes. TerraSync software data capture forms now dynamically adapt to previously entered attribute values for maximum data collection efficiency. Examples include making a... (read more)
2010-10-11 12:00:00

Z-Max.Net GPS Tests TERIA

Magellan Z-Max.Net has has been qualified for the new French GPS Reference Network Teria. Originally planned by the Ordre des Géomètres-Experts (French Surveyors Union) to facilitate the work of its members, the TERIA network is an RTK network, based on the use of Magellan reference stations, that will allow users to position themselves in real time with great accuracy, throughout Metropolitan France using the positioning reference of the established network. EXAGONE, the network administrator, will make available an accurate and instant positioning tool for all georeferencing applications.   The tests performed in August this year were the first in the... (read more)
2006-12-28 09:59:38

SiRFstarIII Based OEM GPS Receivers

Fastrax Ltd. (Finland) announced the iTrax300, the latest addition to the company's range of OEM GPS receivers. The iTrax300 is based on the SiRFstarIII GSC3 and GSC3-LP chipsets. iTrax300 receivers are suited for both industrial navigation systems and battery operated consumer products such as handheld computers, vehicle navigation devices, sports accessories and mobile phones. iTrax300 key features: iTrax Multiplatform compatible; SiRFstarIII chipsets (GSC3 and GSC3-LP); Tiny form factor - 16.2 x 18.8 x 2.3 mm; Low power consumption: 170mW @ 3.0V (GSC3); Sensitivity of -157 dBm (Tracking); NMEA & SiRF binary protocols; Two serial ports; 1PPS output; GPIO available for... (read more)
2006-06-07 12:00:00

GPS and Forestry in Japan

Up to 70% of land in Japan is covered by forest. Since the second world war many forests have been planted with cedar and nurtured for their high productivity. However, forests are valued not only for timber production but also for water-resource management and hazard prevention, such as that involved in landslide. Conservation and forest management today play a key role in environmental protection. New Maps Needed The Japanese Ministry of Agriculture, Forestry and Fisheries and the Forestry Agency promote forestry management using GIS, but the creation of the ‘Forest Base Map’ in digital format is for many reasons going... (read more)
2007-10-16 12:00:00

Field Area Checks Using GPS

Preventing Oversubsidisation of EU Farmers
The area of agricultural fields within the European Union (EU) are checked against claims to ensure that farmers receive the right amount of subsidies. This measure, stemming from EU Common Agricultural Policy reform in the early 1990s and aimed at preventing fraudulent use of taxpayers’ money, is now supported by GPS, in addition to the long existing use of remote sensing data. In this first of two features the author sketches the history of GPS in this context. In 2004, remote-sensing checks covered over 160,000 of the approximately five million farms receiving subsidies across the 25 EU member states. But... (read more)
2005-07-26 12:00:00

GPS IIR-15 in Orbit

A ‘replenishment’ Block-IIR Global Positioning System (GPS) satellite for the U.S. Air Force has been put into orbit. The Delta II rocket carrying the GPS IIR-15 (M) spacecraft lifted off from Space Launch Complex 17A at Cape Canaveral Air Force Station, FL, USA, at 2.50pm EDT on 24th September. Following a nominal 68-minute flight, the rocket deployed the satellite into a transfer orbit. The GPS IIR-15 (M) is the second of the modernised GPS satellites incorporating various improvements to provide enhanced accuracy, resistance to interference and performance for users. The Boeing Delta II 7925-9.5 configuration vehicle used for the mission... (read more)
2006-09-26 12:00:00

First GPS-ready Digital Camera

Ricoh Corporation (CA, USA) has launched the Pro G3, a high-resolution digital camera that embeds captured images with GPS coordinate information received from either its on-board GPS unit or from external GPS devices. Once these captured 'geo-images' are transferred to a PC they are automatically converted to shape files or merged into geo-databases for instant integration into GIS. In addition to storing GPS data in the image, the camera also utilises a user-configurable data dictionary for tagging pictures with workflow-related information. These attributes are easily accessible from the GIS layer table for automated database integration. The robust camera features a... (read more)
2005-03-17 12:00:00

GPS: Position, Time and Distance

Receiver position is calculated from the position of satellites and the distances to them. Distance is calculated from the time a radio signal travels between satellite and receiver. But how do we know the satellite’s position and how is travelling time determined? Satellite positioning – I know what it is, I know what it does, but how does GPS work? How satellites measure distance Basically, satellite positioning is a trilateration problem. From the known position of three satellites and the measured distances between them and the receiver, coordinates of receiver position can be calculated. The distances are determined by multiplying... (read more)
2005-06-09 12:00:00
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