Titlebook: Understanding the Navstar; GPS, GIS, and IVHS Tom Logsdon Book 1995Latest edition Tom Logsdon 1995 GIS.architecture.avionics.computer.infor

FOVEA

User-set Architecture,mination from the brake light of a Lincoln Town Car seen by another driver 1,500 miles away. Stand on the observation deck of the Chicago Sears Tower, looking toward the western sky, and your face will be bathed by a comparable amount of energy from a 15-watt Christmas tree bulb clipped to the Nativ

沙草紙

User-set Performance,east six grossly different error levels can be specified, depending primarily on which operating mode the receiver uses to obtain its navigation solution. The six modes of operation, which are listed in Figure 5.1, can be partitioned into these two broad categories:

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Nibble

orthopedist

Interoperability with Other Navigation Systems,stems, its versatility and accuracy can be further increased. In particular, a successful marriage between the former Soviet Union’s Glonass constellation and the American GPS could yield extremely beneficial results.

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谷物

Precise Time Synchronization,hip from London to the New World, he replied: “Sail south until the butter melts, then turn right.” For decades thereafter, Britannia ruled the waves, but her seamen paid for their lack of navigational expertise with precious ships and expensive cargos. Sometimes they paid with their own lives.

CULP

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Geodetic Surveying and Satellite Positioning,d States. According to one early press report, their space-age measurements caused the research team to “move the Washington Monument 94.5 feet to the northwest!” And during that same surveying campaign, they moved the Empire State Building 120.5 feet to the northeast, and they repositioned Chicago’

NAV

Military Applications,g the Persian Gulf War, precision-guided munitions consistently struck much smaller targets with pinpoint accuracy thanks, in part, to the precise positioning services provided by a partial constellation of Navstar navigation satellites.