Air force test-fire accuracy of fixed position of new-style GPS satellite is less than 3 meters

Reported according to website of news of American matters pertaining to defense air force is whole world of first when was about to blast off in May new generation to locate systematic satellite prepares on March 22, 2010.

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American government asks duty arrange (GAO) points out in reporting to congressional: GPS satellite amount may bring about bomb of accurate control and guide too less to hit the target the ability of the target is reduced, force a plane to change or defer is remote flight route, reduce army possibly also to receive the accuracy of GPS signal when city or highland fight.

Satellite of new-style GPS IIF is one of 12 satellites that Boeing company plans to produce. If successful word, plan of satellite of the 2nd GPS IIF blasts off by 2010. Be in as next generation satellites the addition of course amount, the accuracy of GPS also can rise accordingly. Double the accuracy of GPS IIF satellite is satellite of the generation on its. Accordingly, after satellite of most GPS IIF enters outer space, will can be less than 3 meters accuracy with be being offerred for ground receiver, the accuracy of the most popular hans wilhelm current GPS constellation is less than 6 meters.

Better accuracy comes from the advanced atomic clock on Yu Xinwei star. GPS measures time through accurate ground, fixed position signal several satellites from inside aerospace send ground GPS receiver. The software on receiver measures 3 or the time of more satellite, calculate next the seat that gives it. Time is measured more accurate, location is exacter.

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GPS IIF satellite still provides other and advanced capability dearfoam slipper the most popular resealable bags sears to military affairs and civilian user. Satellitic for military use " M is piled up " signal can enhance a satellite to have interference rejection capacity. Alterable power character makes satellitic controller can increase signal power, in necessary when strong wear interference. GPS IIF satellite is being accepted upgrade in course software the capability of the respect is stronger. The star that the satellite carries carries memory enough big, enough upgrades the moving system of GPS system and satellite. Current satellite upgrades ability is limited. New GPS ground controlled equipment to use the function that m the best selling hans wilhelm ore moves automatically and governs, automation reduced operation cost. New generation satellite designs life to be 12 years at least, dearfoam slippers for women but predict to will extend use time.

At present generation GPS constellation includes 30 satellites, air force weighs a system " indispensible " the amount is 24. Move to be able to have particular risk under 24 systems. European whole world locates indispensible amount of the system is 30.

GPS III satellite is next generation satellites of GPS-IIF, the emissive time that company of horse of the name of a river in Shaanxi and Henan provinces says first GPS-III predicts to be 2014, but GAO thinks in view of GPS-IIF and other satellite system defer, this is for a short while not suit is actual. Because contract business is in of GPS IIF satellite professional skill is resealable bags for flights lacked in building a course, devoid project is superintended, return existence technology issue, satellite of first G most popular selling dearfoam slipper PS IIF deferred 3 years half, project cost raised most popular selling hans wilhelm one times, come from increase sharply of original 729 million dollar 1.7 billion dollar. (Guo of red of Ho resealable bags for clothes u of referral center of Chinese spaceflight engineering refineds more)