GPS navigation systems have come a long way
Jeff Sanders
Garmin GPS Navigation Systems
http://www.GpsFrontier.com
04/05/09
GPS navigation systems have come a long way
GPS systems have come a long way since they were designed for the U.S. military. The first sign of NAVSTAR 1 was received on 22 February 1978. NAVSTAR 1 was launched from Vandenberg Air Force Base in California and was the first of 24 satellites that make up the Global Positioning System (GPS). The first generation of satellites comprise the Global Positioning System 24 satellites were launched between February 22, 1978 and 9 October 1985. Since it became operational global positioning system has revolutionized the way America goes to war and provides a GPS system in which the world relies on for accurate navigation.
The constellation of Global Positioning System satellites into orbit is administered by the U.S. Air Force 50th Space Wing. The unit is the host wing at Schriever Air Force Base, located in eastern Colorado Springs, Colorado. They are responsible for monitoring and maintaining command and control, warning, navigation and communications satellites Air Force Space Command and the global positioning satellite system. Full Operational Capability was declared by NAVSTAR in April 1995 (NAVSTAR is an acronym for Navigation Satellite timing and Ranging, and is the official name for U.S. Government gives the GPS satellite system).
The U.S. government given the global positioning system available for civilian use in late 1980 without charges and subscription charges for installation or use GPS in the civilian GPS market exploded, especially in the last decade. A sophisticated new generation of GPS satellites replacement of old satellites and now there are 34 GPS satellites in orbit that provide combat capability for military and navigational aids for aircraft. Civilian applications include ATMs auto, banking and stock transactions, and grid management. Currently 31 of the 34 orbiting GPS satellites transmit signals navigation and time for civil and military users worldwide.
GPS for civilian use
The civilian GPS system is not always was as it is and the U.S. military continues to maintain the most accurate available Global Positioning Systems classified for national security. However, the updates GPS for two new civilian signals for enhanced user accuracy and reliability, particularly with regard to aviation security were planned in 1998. Then, 2 May 2000 selective availability was discontinued as a result of Executive Order 1996, allowing users to receive a non-degraded GPS signal worldwide, and in 2004, QUALCOMM announced the successful testing of assisted GPS for mobile phones that opened the way for assisted GPS phones phones that are widely used today.
In 2005, the first third-generation GPS satellites was launched and began transmitting a signal civil seconds to improved user performance. Then, in September 2007, the Air Force completed a four-phase transition of the global positioning of the segment ground systems for the new Plan Architecture Evolution. The ground segment provide command and control of the satellites and generates the navigation message satellites to broadcast to users of GPS devices to calculate the position of his land. The new GPS satellites include new high-power, anti-jam-military code, along with other accuracy, reliability, and improves data integrity for civil and military users. This modernized version of the most useful in the free world has been designed to guarantee U.S. is more accurate and safe position, navigation and the ability to schedule until 2030.
Europe and Russia develop its own GPS
In 2004, the United States signed an agreement with the European Community establishing cooperation with the European Galileo system planned. Galileo is a global navigation satellite system (GNSS) which is currently being built by the European Union from and independent of courtesy, but the U.S. Global Positioning System. The Galileo system of the European Union should be operational by 2013. The European Community policy aims to provide a system GPS independent European countries can trust in times of war or political dissent, because in Russia or the U.S. can disable the use of national systems by others (through encryption).
The Russian GLONASS GPS system is a system of radio-navigation satellite was developed by the former Soviet Union and now operated by the government of Russia by the Russian Space Forces. Like the European GPS system the Russian GPS system also works separately but is free to U.S. Global Positioning System. Russia began launching satellites for GPS in space on 12 October 1982 and was completed in 1995. The system quickly fell into disuse fallow the collapse of the Russian economy, but in 2001 the Russian government began to restore the system with the hope of restoring global coverage in late 2009.
GPS systems today
Depending on your GPS unit with a GPS receiver requires only one signal of 3-4 satellites to calculate the position of the units and work in all weather conditions, anywhere in the world, 24 hours a day. There's no subscription fees or creation of positions as a cellular telephone to operate GPS receivers and GPS receivers even though some have extra features like traffic updates real time, which will have a monthly fee, some Garmins Nuvi GPS receivers as "T", the series come with traffic to live free from the life of the unit. GPS Today is extremely accurate, thanks to its design of multiple channels in parallel. Garmin 12-parallel channel receivers are quick to lock to satellites when first powered up and maintaining a strong lock, even in dense foliage or a city with tall buildings, and continually subject signals up to 12 satellites at a time given. Even if a 12 parallel channel GPS receiver loses the satellite signal 8 while continue to work properly.
WAAS (Wide Area Augmentation System) was developed by the Federal Aviation Administration to increase the global positioning system to improve its accuracy, integrity and availability. WAAS was originally intended to allow aircraft to rely on GPS for all phases of flight, including precision approach to the airport within its coverage area. All though originally for the aviation industry today most GPS receivers are WAAS including automotive, navigation, chartplotters and handheld units. WAAS uses a network of ground reference stations in North America and Hawaii, to measure small variations in the GPS satellite signals. Measurements of these reference stations are sent to the master station and then send correction WAAS geostationary satellites. These satellites broadcast correction messages to Earth, where GPS receivers WAAS correction data using information technology, while their positions to improve accuracy. WAAS enabled GPS receivers are accurate to within 3 meters and make them more accurate GPS receivers for civilian use in the market today. In fact, a WAAS GPS receiver can give you instructions until the lane is traveling in his car (while supporting the mapping program "lane assist" directions) and no additional equipment or fees required to exploit WAAS GPS receivers are becoming as common as cell phone.
About the Author
Jeff Sanders
Garmin GPS Navigation Systems
www.GpsFrontier.com
04/05/09
Female GPS System
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