Electronic navigation systems
Fried, Walter R. Formerly, Hughes Aircraft Company, Santa Ana, California.
Greenspan, Richard L. The Charles Stark Draper Laboratory, Cambridge, Massachusetts.
May, Marvin B. Navigation Research and Development Center, Pennsylvania State University Applied Research Library, Warminster, Pennsylvania.
- System classification
- Self-Contained Systems
- Radiating systems
- Nonradiating systems
- Cooperative Systems
- Point-source radio systems
- Multiple-source radio systems
- Links to Primary Literature
- Additional Readings
Systems that locate suitably equipped users by means of measurements made by electronic sensors. Typical measurements include distance or bearing from a vehicle to a known point, or direct determination of the present position of the vehicle in a particular coordinate system. From the knowledge of present position, the course and distance to a destination at a known location can be calculated. Most systems are based on the use of electromagnetic (radio) or acoustic waves or inertial sensing. The systems described here are typically used by aircraft, ships, and land and space vehicles. In addition, the use of satellites for positioning and land navigation by individuals has become common.
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