It is launched initially by parachute, but as it deploys, the Inertial Navigation System and Global Positioning System take over.

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Maps and GPS (global positioning system) navigation in cars are very popular, and all of those maps came from one of just two mapmaking companies.

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Each onboard ADS-B set consists of a Global Positioning System satellite navigation unit, two Pentium microprocessors, some software and a radio transmitter-receiver--not much more gear than you would find behind the dash of a new Cadillac.

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She said that US diplomats and scientists should ensure that the Global Positioning System should become the world's standard satellite navigation system.

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The final constellation of 30 satellites will more than double the spacecraft providing the American Global Positioning System, increasing the accuracy and reliability of navigation and timing signals that can be received across the planet.

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Earlier this year Keiser put out a bullish report on location technologies: mapp Close ing database firms TeleAtlas and Navteq, dashboard navigation device makers such as TomTom and Garmin, and global positioning system chip firms like Sirf Technology Holdings.

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While the participants engaged in much discussion there of Iraq, trade and other issues, the most significant result of the meeting may have been an agreement to ensure that Europes Galileo navigation system does not interfere with the frequencies used by Americas Global Positioning Satellite (GPS) system .

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We questioned the starry-eyed revenue and expense forecasts for Galileo, a European satellite navigation venture designed to compete with the U.S.' Global Positioning System.

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