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Concept

Radiodetermination

As defined by FS-1037C and ITU Radio Regulations, radiodetermination is: "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." There are two main fields to radiodetermination: 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. Radiotriangulation.jpg| [[Triangulation]] using radiodetermination British Post Office interference finding truck 1927.jpg|British Post Office mobile RDF, 1927 NSGA Galeta Island Site.jpg|Direction-finding system [[Galeta Island (Panama)|Galeta Island]] Pelengator.jpg|Direction finder with direction-finding aerial Radiodetermination service is – according to Article 1.40 of the International Telecommunication Union's (ITU) Radio Regulations (RR) – defined as «A radiocommunication service for the purpose of radiodetermination.» This radiocommunication service is classified in accordance with ITU Radio Regulations (article 1) as follows: Radiodetermination service (article 1.40) Radiodetermination-satellite service' (article 1.41) Radionavigation service (article 1.42) Radionavigation-satellite service (article 1.43) Maritime radionavigation service (article 1.444) Maritime radionavigation-satellite service (article 1.45) Aeronautical radionavigation service (article 1.46) Aeronautical radionavigation-satellite service (article 1.47) Radiolocation service (article 1.48) Radiolocation-satellite service (article 1.49) A radiodetermination station is – according to article 1.86 of the International Telecommunication Union ́s (ITU) ITU Radio Regulations (RR) – defined as "A radio station in the radiodetermination service."" A radiodetermination station uses reception of radio waves in order to determine the location of an object, under the condition that this thing is reflecting and/or transmitting radio waves.

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Related concepts (5)
Radiolocation
Radiolocation, also known as radiolocating or radiopositioning, is the process of finding the location of something through the use of radio waves. It generally refers to passive uses, particularly radar—as well as detecting buried cables, water mains, and other public utilities. It is similar to radionavigation, but radiolocation usually refers to passively finding a distant object rather than actively one's own position. Both are types of radiodetermination. Radiolocation is also used in real-time locating systems (RTLS) for tracking valuable assets.
Radio communication service
Radio communication service or radiocommunication service is according to Article 1, No. 1.19 of the International Telecommunication Union's Radio Regulations (ITU RR), defined as "a service...involving the transmission, emission and/or reception of radio waves for specific telecommunication purposes". Radiocommunication is sub-divided into space and terrestrial radiocommunication. Space radiocommunication is defined in RR Article 1, No. 1.
Radio navigation
Radio navigation or radionavigation is the application of radio frequencies to determine a position of an object on the Earth, either the vessel or an obstruction. Like radiolocation, it is a type of radiodetermination. The basic principles are measurements from/to electric beacons, especially Angular directions, e.g. by bearing, radio phases or interferometry, Distances, e.g. ranging by measurement of time of flight between one transmitter and multiple receivers or vice versa, Distance differences by measurement of times of arrival of signals from one transmitter to multiple receivers or vice versa Partly also velocity, e.
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