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

Cm Precision GPS Mapping Solution

KOREC (United Kingdom) has launched a new system that makes RTK cm precision GPS a viable solution for the mapping market. By combining a Trimble RTK GPS Receiver, Trimble’s VRS Now Service and FastMap Tablet GIS Data Capture software, a cost- effective, simple, real-time, 3D, cm precision GIS Data Capture against the OS MasterMap has now moved into the mainstream for GIS mapping users. The introduction of Trimble’s VRS Now service has eliminated the need to use a GPS base station together with the time consuming complexities associated with setting it up. The service provides end users with instant access... (read more)
2007-02-02 09:54:22

Leica Integrates TS and GPS

Leica Geosystems (Switzerland) has introduced SmartStation, the newest member of its TPS1200 product family, offering high-performance total station with fully integrated GPS functionality. All existing TPS1200 instruments can be easily upgraded to SmartStation. With the entire software in the total station, all TPS and GPS operations are controlled via the TPS keyboard. All data is stored in a single database on the same CompactFlash card. The modular design enables use of total station and GPS in combination as well as separately. The GPS determines the total station’s position and once positioned the SmartAntenna GPS can be removed and used as... (read more)
2005-03-17 12:00:00

Galileo and GPS Synchronise Watches

Ensuring the early interoperability of Europe’s satellite navigation with GPS, the four Galileo satellites have begun broadcasting the ‘offset’ between the parallel navigation systems’ timings, accurate to a few billionths of a second. With satellite navigation based around the highly accurate measurement of signal travel times, both Galileo and GPS have their own internal reference time systems used to synchronise all system clocks and signals. The problem is that these time systems are not quite identical, with Galileo System Time being around 50 nanoseconds or less apart from GPS time. A nanosecond is only a billionth of a second, corresponding to... (read more)
2013-05-06 08:56:37

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

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

Hemisphere GPS Wins ASTech Awards

Hemisphere GPS (Canada) has been announced winner of the Alberta Science and Technology (ASTech) Leadership Foundation Award for its outstanding commercial achievement in science and technology in the businesses over $25 million category. The ASTech Awards are among the highest honors available to individuals and organisations whose outstanding work has had an impact on science, technology, business, medicine, the environment and the lives of people in Alberta and worldwide. Earlier this month, Hemisphere GPS was also recognised by the Canadian Manufacturers and Exporters and the National Research Council of Canada for its innovative Crescent GPS Technology. On 16th October, Hemisphere... (read more)
2008-10-28 09:10:26

Embedded GPS L1 Antenna

Tallysman Wireless has released the TW1015 Embedded GPS L1 Antenna and the TW1017 Brickwall Filtered Embedded GPS L1 Antenna. Both antennas are small, low-profile embedded GPS L1 antennas, specially designed for industrial, military, precision positioning and timing applications.   The antennas feature a high-performance, custom-tuned ceramic patch element, and a very low noise amplifier (LNA), optimised to capture the LNA noise figure for OEM applications. The TW1017 SAW pre-filter prevents saturation of the LNA by high powered terrestrial L-Band interference The built-in 35mm circular ground plane can be augmented with host system ground surfaces Tallysman offers custom services to assist... (read more)
2012-01-13 11:23:20
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