GPS Reviews & Technology

SiRF Star III GPS Chipset Powering Location Aware Mobile GPS Devices

The SiRF Star III chipset family has proved a watershed innovation GPS chip architecture by offering impressive performance improvements to the GPS receiver manufacturing industry. They have been adopted by major GPS manufacturers including Garmin, TomTom and Magellan. The SiRF Star III chipset family was developed by SiRF Technology Holdings, Inc. (SIRF – Nasdaq Stock Exchange) of San Jose, California. SiRF Star III chipset There are three primary reasons why […]

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COSMIC – Using GPS for Weather Forecasting


In many scientific endeavors the full range of beneficial outcomes are not, and often cannot, be foreseen. It is an element to consider in the current debate over the value of moon bases or manned missions to Mars. It was one such unexpected beneficial outcome which allowed the COSMIC Satellite Constellation August 2006 formation of Hurricane Ernesto in the eastern Caribbean to be predicted two days in advance when contemporary […]

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Assisted GPS (A-GPS) Powering the Real World Web


According to Qualcomm location awareness technology will be the next must-have on mobile phones. Qualcomm recently announced that is has shipped worldwide 200 million mobile handsets using its gpsOne assisted-GPS technology. Gartner believe that location aware technologies including A-GPS will mature in less than two years and contribute to the emergence of a Real World Web where mobile devices will interact with their surroundings which have local processing capabilities. The […]

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Differential GPS and Other GPS Accuracy Improvement Systems


Less expensive, general purpose GPS receivers have an accuracy of about 10-20 meters ( 33 to 66 feet) which is too inaccurate for many GPS applications for example, vehicle GPS tracking systems. There are a number of techniques used to improve GPS accuracy. Nationwide Differential Global Positioning System (NDGPS) improves GPS navigational accuracy to a range of 1 to 3 meter (10 feet). The concept underlying differential GPS is the […]

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A Brief Global Positioning System (GPS) Technology Overview


NAVSTAR GPS (Navigation Signal Timing and Ranging Global Positioning System) commonly referred to as the Global Positioning System (GPS) was developed by the United States Department of Defense. GPS uses satellites and ground equipment to determine position anywhere on Earth. At least 24 satellites are operational at all times. Unlike paying an Internet Service Provider to access the Internet, anyone with a receiver can use the system at no cost. […]

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Russia Launches Three Modernized GLONASS Global Positioning Satellites


On December 25, 2006, Russia successfully launched three modernized GLONASS-M satellites to join its existing, partially complete, GLONASS global navigation satellite system. The GLONASS -M series of satellites have an additional navigation frequency for civilian users, a longer (seven year) service life and updated antenna feeder systems. A new satellite series, GLONASS-K, with reduced weight (cheaper to launch) and a further increased operation lifetime of 10-12 years, is expected to […]

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GPS Assist Parachuting – Para-Flite Precision Parachute Delivery System


According to the Natrick Soldier Center, High altitude, precision airdrop is expected to be a key enabling technology for the Future Force. Allowing transport aircraft to safely stand off the combat area and exposing troops to less danger during retrieval are just a couple of advantages of a precision airdrop capability. JPADS Parachute Delivery System Natrick Soldier Center conducts research and engineering on military personnel parachuting and cargo airdrop systems. […]

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Right on Target – Airbourne Systems GPS Guided DragonFly And FireFly Self Guided Parachutes Selected By US Army


The US Army has selected Airbourne Systems 10 k (10,000 lb) DragonFly Joint Precision Aerial Delivery System (JPADS) following on from its recent selection of the FireFly 2K (2,000 lb) JPADS platform. Utilizing a precision guided parachute delivery system based on a GPS receiver The DragonFly system allows the Army to stand off dangerous areas and still deliver their cargo right on target. Airbourne Systems has a number of precision […]

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GPS Principles Used by Praxim’s Surgetics Station


It’s always fascinating to discover something new among the myriad of applications to which GPS positioning technology can be applied such as parachute guidance, weather forecasting and location based services. Now one of the principles which underlie global positioning technology, trilateration , is being used to assist surgeons with orthopedic, ear nose and throat, soft tissue and prosthetics surgery. The specialized medical equipment being referred to is the Surgetics Station […]

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InvenSence’s World’s Smallest Dead Reckoning Gyroscope for GPS Portable Navigation


The world’s smallest, lowest cost dual-axis gyroscope for GPS portable navigation devices, the IDG-1004, has just been released by InvenSence Inc. Santa Clara, California based InvenSense manufactures integrated motion sensing solutions for mobile applications. InvenSense IDG-1004 Gyroscopic Sensor The IDG-1004 incorporates InvenSense’s MEMS technology of vertically driven, vibrating masses to provide a low-cost, dual-axis angular rate sensor. The sensor and electronics are integrated onto a single chip. The IDG-1004 improves […]

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