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Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1] – defined as "A transmitter-receiver associated with a fixed navigational mark which, when triggered by a radar, automatically returns a distinctive signal which can appear on the display of the ...
Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.
The MS (mobile phone) performs E-OTD or GPS measurements, and successively performs the complete computation of the geolocation inside the phone. The result of this computation is then sent back to the carrier network. In this mode, the network typically needs to send so-called assistance data to the phone.
Identification, friend or foe ( IFF) is a combat identification system designed for command and control. It uses a transponder that listens for an interrogation signal and then sends a response that identifies the broadcaster. IFF systems usually use radar frequencies, but other electromagnetic frequencies, radio or infrared, may be used. [1]
The term applies to navigating, real-time locating, and positioning support with global, regional or local scope. The term has been applied to traffic, logistics, business administration, and leisure applications. Location awareness is supported by navigation systems, positioning systems, and/or locating services .
The service area served by each provider is divided into small geographical areas called cells, and all the phones in a cell communicate with that cell's antenna. Both the phone and the tower have radio transmitters which communicate with each other. Since in a cellular network the same radio channels are reused every few cells, cellular ...
Location-based service (LBS) is a general term denoting software services which use geographic data and information to provide services or information to users. [1] LBS can be used in a variety of contexts, such as health, indoor object search, [2] entertainment, [3] work, personal life, etc. [4] Commonly used examples of location-based services include navigation software, social networking ...
The local SWAT team assigned to help protect former President Donald Trump on July 13 had not had any contact with the Secret Service agents in charge of security before a would-be assassin opened ...