Automobile manufacturers are among the largest companies in the world. These corporations are often multinational. These companies often share parts. or use parts made in foreign factories. The U.S. automobile industry produces 16.8 million vehicles in 1999. The three major automobile manufacturers in the United States General Motors Corporation, Ford Motor Company and Daimler Chrysler AG- provide three-fourths of the industry's total direct employment in the United States At the start of the 21 st century, the trends of global trade an manufacturing flexibility continue. Computerization continues to be a major part of part of auto design and manufacture. as do the search for alternative fuels and more efficient automobile designs
• Automobile manufacturers are among the largest companies in the world. These corporations are often multinational. These companies often share parts, or use parts made in foreign factories. The U.S. automobile industry produces 16.8 million vehicles in 1999. The three major automobile manufacturers in the United States – General Motors Corporation, Ford Motor Company, and Daimler Chrysler AG – provide three-fourths of the industry’s total direct employment in the United States. • At the start of the 21st century, the trends of global trade and • manufacturing flexibility continue. Computerization continues to be a major part of part of auto design and manufacture, as do the search for alternative fuels and more efficient automobile designs
Global positioning System(GPS): space-based radio navigation system, consisting of 24 satellites and ground support. GPS provides users with accurate information about their position and velocity, as well as the time, anywhere in the world and in all weather conditions GPS determines location by computing the difference between the time that a signal is sent and the time it is received. GPS satellites carry atomic clocks that provide extremely accurate time. The time information is placed in the codes broadcast by the satellite so that a receiver can continuously determine the time the signal was broadcast. The signal contains data that a receiver uses to compute the locations of the satellites and to make other adjustments needed for accurate positioning
• Global Positioning System (GPS): space-based radionavigation system, consisting of 24 satellites and ground support. GPS provides users with accurate information about their position and velocity, as well as the time, anywhere in the world and in all weather conditions. • GPS determines location by computing the difference between the time that a signal is sent and the time it is received. GPS satellites carry atomic clocks that provide extremely accurate time. The time information is placed in the codes broadcast by the satellite so that a receiver can continuously determine the time the signal was broadcast. The signal contains data that a receiver uses to compute the locations of the satellites and to make other adjustments needed for accurate positioning
The receiver uses the time difference between the time of signa reception and the broadcast time to compute the distance, or range, from the receiver to the satellite. The receiver must account for propagation delays, or decreases in the signals speed caused by the ionosphere and the troposphere. With information about the ranges to three satellites and the location of the satellite when the signal was sent, the receiver can compute its own three-dimensional position As of march 1994. 24 GPS satellites were in operation Replenishment satellites are ready for launch, and contracts have been awarded to provide satellites into the 2 1 st century GPS applications continue to grow in land, sea, air, and space navigation. The ability to enhance safety and to decrease fuel consumption will make GPs an important component of travel in the international airspace system. Airplanes will use gPs for landing at fogbound airports. Automobiles will use GPS as part of intelligent transportation systems
• The receiver uses the time difference between the time of signal reception and the broadcast time to compute the distance, or range, from the receiver to the satellite. The receiver must account for propagation delays, or decreases in the signal’s speed caused by the ionosphere and the troposphere. With information about the ranges to three satellites and the location of the satellite when the signal was sent, the receiver can compute its own three-dimensional position. • As of March 1994, 24 GPS satellites were in operation. Replenishment satellites are ready for launch, and contracts have been awarded to provide satellites into the 21st century. GPS applications continue to grow in land, sea, air, and space navigation. The ability to enhance safety and to decrease fuel consumption will make GPS an important component of travel in the international airspace system. Airplanes will use GPS for landing at fogbound airports. Automobiles will use GPS as part of intelligent transportation systems