Precision GPS Products

Hemisphere GPS
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 corporate headquarters in Calgary, Canada, this relatively young company also has product development, sales and marketing facilities in Arizona, Kansas, Texas, and Australia. The company was born in 1990, when Canadian Systems Inc co-founders joined together to pursue their dream of manufacturing precision GPS instruments. Shortly afterwards the organisation changed its name to Communications System International Inc (CSI) and released its first product the MBX-1TM, a Differential GPS Circuit Board.... (read more)
2009-04-02 12:00:00

High Accuracy GPS Data

Blue Marble Geographics, USA, has presented during the 2011 Maine Municipal Technology Conference. Samuel Knight of Blue Marble presented a talk on High Accuracy GPS - Pitfalls of Post-Processing at the 3rd March conference held in Bangor, Maine. The conference was well-attended by municipality representatives from around the state and highlighted the dramatic technological changes currently underway while trying to predict the impact on government services. Knight, the director of Product Management for Blue Marble, focused on avoiding the variety of pit falls that a novice user can run into, which may significantly degrade of the quality of the GPS... (read more)
2011-03-07 11:06:42

Hemisphere GPS Outback BaseLineHD

In response to farmers growing demand for increased accuracy at a more affordable price, Hemisphere GPS (KS, USA) has developed another option to subscription networks and high-priced base systems. Using high-definition, single-frequency RTK, Outback BaseLineHD provides the same accuracy as dual-frequency RTK but at a fraction of the cost. Used in combination with Outback S2 and Outback eDrive, BaseLineHD provides one inch pass-to-pass accuracy in an affordable hands-free GPS steering system. Outback BaseLineHD includes an integrated base station and a single rover unit. Multiple vehicles can be equipped with additional rover units all operating from a single base system. In... (read more)
2007-02-14 11:57:32

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

Japanese GPS Reference Stations

Topcon has been selected by the Geographical Survey Institute (GSI), an affiliate of the Japanese Ministry of Land, Infrastructure, Transport and Tourism (MLIT), to supply GPS reference stations. The company will supply 360 GPS receivers as well as new software and database system for the GPS Earth Observation Network System (GEONET) operated by GSI. It is expected the new systems will be in operation by the end of March 2010.     In 1992, GSI initiated the introduction of Global Positioning System (GPS) Continuously Operating Reference Station (CORS) known as GEONET. As of March 2009, nationwide 1,236 stations are in... (read more)
2009-08-11 09:28:24

Modernized GPS Satellite Launched

The fourth US Air Force modernized Global Positioning System Block IIR (GPS IIR-M) satellite was launched successfully from Cape Canaveral Air Force Station aboard a United Launch Alliance (ULA) Delta II launch vehicle. Designated GPS IIR-17M, the satellite is the fourth in a series of eight Block IIR-M spacecraft that Lockheed Martin Navigation Systems has modernised for its customer, the Global Positioning Systems Wing, Space and Missile Systems Center, Los Angeles Air Force Base,CA, USA. The Block IIR-M series includes new features that enhance operations and navigation signal performance for military and civilian GPS users around the globe.   Each... (read more)
2007-10-18 09:51:56

Navman GPS3260 Released

Navman (CA, USA) has released the Navman GPS3260 series Smart GPS Sensor, a sensitive GPS receiver and antenna device to provide location based capabilities to a variety of mobile applications from PDAs to commercial vehicles. A fully integrated GPS antenna and receiver, the Smart GPS Sensor features a 49.0 x 41.0 x 14.2mm form factor and includes an ultra-high sensitivity 20-channel receiver, as well as over 200,000 effective correlators for rapid satellite acquisition fixes and tracking even in weak signal conditions less than -159 dBm. The device provides fast acquisition fixes with less than 1 second hot starts, 32 second... (read more)
2007-01-23 04:03:54

Archer Longbow Handheld GPS

Juniper Systems and Surveylab have launched the Archer Longbow remote positioning GPS handheld. By combining a rugged computer, GPS receiver, 3D compass, digital camera and a laser rangefinder, the Longbow provides the user with an all-in-one mobile GIS data capture solution. The laser is available in 100m, 300m and 1,000m versions.   The user simply points the Archer Longbow at a target up to a kilometre away, pushes a button, and captures the target's GPS coordinate plus a picture of the target. It then produces a verifiable, geo-tagged digital image with crosshairs and other information superimposed on the image to... (read more)
2009-07-22 10:32:20

Integrating GPS and SAR

Monitoring Coal-field Subsidence
Subsidence of the earth's surface caused by underground mining can be monitored using terrestrial land-survey methods. However, applying these is difficult in hilly terrain and densely forested or urbanised areas. Such difficulties can be overcome with a combination of spaceborne SAR and GPS. InSAR accuracy corresponds to GPS and lies, with 9mm variance, in less than 8% of SAR signal phase.<P> When a point on the earth's surface is subject to deformation such as subsidence, the distance, or slant range, between an orbiting SAR sensor and the point gradually changes over time. Slant range can be determined by measuring the... (read more)
2007-10-16 12:00:00
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