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Radiodetermination
Active and passive means of determining position via radio waves / From Wikipedia, the free encyclopedia
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As defined by FS-1037C and ITU Radio Regulations, radiodetermination is:[1]
the determination of the position, velocity or other characteristics of an object, or the obtaining of information relating to these parameters, by means of the propagation properties of radio waves
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There are two main fields to radiodetermination:[1]
- radionavigation: "used for the purposes of navigation, including obstruction warning", which is mainly active;
- radiolocation: "used for purposes other than those of radionavigation", which is mainly passive.
Radar is a radiodetermination system based on the reflection (or retransmission) of a radio wave by an object at a position to be determined.[1]