Amateur radio direction finding Amateur radio direction finding (ARDF, also known as radio orienteering and radiosport) is an amateur racing sport that combines radio direction finding with the map and compass skil...
AN/CRN-2 The radio set AN/CRN-2 was an air transportable glide path transmitter used by the Army Air Force during and after World War II, the set was standardized on 5 Feb 1944.
AN/MRN-1 The AN/MRN-1 was an instrument approach localizer used by the Army Air Force during and after World War II. it was standardized 3 July 1942, and replaced the SCR-241.
AN/MRN-2 The AN/MRN-2 was a Radio Range set used by the Army Air Force during and after World War II, it replaced in part the SCR-277.
AN/MRN-3 The AN/MRN-3 was a marker beacon set used by the Army Air Force during and after World War II, it was standardized 23 October 1943, and replaced SCR-241.
AN/UPN-1 The AN/UPN-1 was a radar Pathfinder marker beacon used by the Army Air Force and Airborne forces during World War II.
Area navigation Area navigation (RNAV) is a method of instrument flight rules (IFR) navigation that allows an aircraft to choose any course within a network of navigation beacons, rather than navigating directl...
Automatic vehicle location Automatic vehicle location (AVL or ~locating; telelocating in EU) is a means for automatically determining and transmitting the geographic location of a vehicle.
Course Deviation Indicator Course Deviation Indicator is an avionics instrument used in aircraft navigation to determine an aircraft's lateral position in relation to a track.
Course deviation indicator A course deviation indicator (CDI) is an avionics instrument used in aircraft navigation to determine an aircraft's lateral position in relation to a track.
Decca Navigator System The Decca Navigator System was a hyperbolic radio navigation system which allowed ships and aircraft to determine their position by receiving radio signals from fixed navigational beacons.
Difference in the depth of modulation The difference in the depth of modulation or DDM is used by instrument landing systems in conjunction with the associated airborne receiving equipment to define a position in airspace.
Direction finding Direction finding (DF), or radio direction finding (RDF), refers to the measurement of the direction from which a received signal was transmitted.
Distance measuring equipment Distance measuring equipment (DME) is a transponder-based radio navigation technology that measures slant range distance by timing the propagation delay of VHF or UHF radio signals.
Electronic leash An electronic leash is the pairing (“leashing”) of one or more wireless devices to a host device that allows the user to find misplaced or out-of-sight objects by activating the host device such...
Fox Oring Fox Oring is a variation of the sport of Amateur Radio Direction Finding.
Fuzzy locating system Fuzzy locating is a rough but reliable method based on appropriate measuring technology for estimating a location of an object.
G-H (navigation) G-H was a radio navigation system developed by Britain during World War II to aid RAF Bomber Command.
GEE (navigation) Gee was the code name given to a radio navigation system used by the Royal Air Force during World War II. It was the first hyperbolic navigation system to be used operationally.
Gee (navigation) Gee was the code name given to a radio navigation system used by the Royal Air Force during World War II. It measured the time delay between two radio signals to produce a "fix".
Gee-H (navigation) Gee-H, sometimes written G-H or GEE-H, was a radio navigation system developed by Britain during World War II to aid RAF Bomber Command.
Global Positioning System The Global Positioning System (GPS) is a space-based satellite navigation system that provides location and time information in all weather conditions, anywhere on or near the Earth where ...
GPS augmentation GPS augmentation refers to techniques used to improve the accuracy of positioning information provided by the Global Positioning System, a network of satellites used for navigation.
GPS enhancement GPS enhancement refers to techniques used to improve the accuracy of positioning information provided by the Global Positioning System, a network of satellites used for navigation.
Horizontal situation indicator The horizontal situation indicator (commonly called the HSI) is an aircraft instrument normally mounted below the artificial horizon in place of a conventional heading indicator.
Hyperbolic navigation Hyperbolic navigation refers to a class of radio navigation systems based on the difference in timing between the reception of two signals, without reference to a common clock.
IBeacon iBeacon is the Apple Trademark for an indoor positioning system that Apple Inc. calls "a new class of low-powered, low-cost transmitters that can notify nearby iOS 7 devices of their presence."
Ice pool Ice Pool Non Directional Beacon is a radio navigation aid for aviation; abbreviated ICW. It is owned by the City of Nenana and operated by the Federal Aviation Administration.
Indoor positioning system An indoor positioning system (IPS) or micromapping is a network of devices used to wirelessly locate objects or people inside a building.
Instrument landing system An instrument landing system (ILS) is a radio beam transmitter that provides a direction for approaching aircraft that tune their receiver to the ILS frequency.
ISO/IEC JTC1/SC31/WG5 ISO/JTC1 SC31 WG6 is a new working group of the ISO on the topic of mobile item identification and management (MIIM).
L-Tronics L-Tronics is a company based in Santa Barbara, California that specializes in the design and manufacture of direction finding (DF) equipment for search and rescue applications, used to locate s...
Localizer performance with vertical guidance Localizer performance with vertical guidance (LPV) are the highest precision GPS (WAAS enabled) aviation instrument approach procedures currently available without specialized aircrew training r...
Lorenz beam The Lorenz beam blind landing system was an air radio navigation system in use from the late 1930s.
Low-frequency radio range The low-frequency radio range (LFR), also known as the four-course radio range, LF/MF four-course radio range, A-N radio range, Adcock radio range, or commonly "the ra...
Marker beacon A marker beacon is a particular type of VHF radio beacon used in aviation, usually in conjunction with an instrument landing system (ILS), to give pilots a means to determine position along an e...
Microwave landing system A microwave landing system (MLS) is an all-weather, precision landing system originally intended to replace or supplement instrument landing systems (ILS).
Multilateration Multilateration is a navigation technique based on the measurement of the difference in distance to two stations at known locations that broadcast signals at known times.
NKR (NDB) NKR is the callsign of an NDB with a range of 50 NM at Leimen-Ochsenbach, Germany, situated at 49°12' 12" N and 8°44'E.
Non-directional beacon A non-directional (radio) beacon (NDB) is a radio transmitter at a known location, used as an aviation or marine navigational aid.
Oboe (navigation) Oboe was a British aerial blind bombing targeting system in World War II, based on radio transponder technology.
Omega (navigation system) OMEGA was the first truly global radio navigation system for aircraft, operated by the United States in cooperation with six partner nations.
Opencellid OpenCellID is a collaborative project to create a free worldwide database of Cell IDs and their corresponding location area identity.
Orfordness Beacon The Orfordness Rotating Wireless Beacon, known simply as the Orfordness Beacon or sometimes the Black Beacon, was an early radio navigation system introduced by the United Kingdom in...
Radio direction finder A radio direction finder (RDF) is a device for finding the direction to a radio source.
Radionavigation service The Radionavigation service (RNS) is in line with the International Telecommunication Unions (ITU) Radio Regulations (RR) Article 1.42 a radiodetermination service for the purpose of radionavig...
Rebecca/Eureka transponding radar The Rebecca/Eureka transponding radar was a short-range radio navigation system used for the dropping of airborne forces and their supplies.
Relative bearing indicator A Relative bearing indicator shows the bearing of some source relative to a vehicle carrying a detector.
Rohde & Schwarz Federal Systems Rohde & Schwarz Federal Systems, Inc. is a U.S. company set up to distribute Rohde & Schwarz products and services for U.S. government and contractor customers.
SCR-277 The SCR-277 was a mobile, trailer mounted radio range set for radio guidance of aircraft.
Sonne (navigation) Sonne (German for "sun") was a radio navigation system developed in Germany during World War II. It was developed from an earlier system known as Elektra, and therefore the system is also ...
Space Integrated GPS/INS Space Integrated GPS/INS (SIGI) is a strapdown Inertial Navigation Unit (INU) developed and built by Honeywell International to control and stabilize spacecraft during missions.
Space modulation Space modulation is a radio amplitude modulation technique used in instrument landing systems that incorporates the use of multiple antennas fed with various radio frequency powers and phases to...
Syledis Syledis (SYstem LEger pour mesure le DIStance) was a terrestrial radio navigation and locating system.
Tactical air navigation system A tactical air navigation system, commonly referred to by the acronym TACAN, is a navigation system used by military aircraft.
Tracking system Generally a tracking system is used for the observing of persons or objects on the move and supplying a timely ordered sequence of respective location data to a model e.g. capable to serve for d...
Transponder landing system A transponder landing system is an all-weather, precision landing system that uses existing airborne transponder and instrument landing system equipment to create a precision approach at a locat...
Two-way ranging Two way ranging is a concept with time of arrival measurement for wireless signals.
U-TDOA U-TDOA, or Uplink Time Difference of Arrival, is a real time locating technology for mobile phone networks that uses multilateration based on timing of received signals to locate a mobile ...
VHF omnidirectional range VHF Omni Directional Radio Range (VOR) is a type of short-range radio navigation system for aircraft, enabling aircraft with a receiving unit to determine their position and stay on cour...
Victor airways Victor airways are low-altitude airways established in the United States by the FAA for flight below Flight Level 180.
Vortac VOR, short for VHF omnidirectional radio range, is a type of radio navigation system for aircraft.
VORTAC VOR, short for VHF omnidirectional radio range, is a type of radio navigation system for aircraft.
Wireless lock Wireless lock is a protection concept for authenticated LAN or WLAN network clients offered from various vendors in various functional shapes and physical designs.
Wireless triangulation Wireless triangulation is a method of determining the location of wireless nodes using IEEE 802.11 standards.
Y-Gerät (navigation) Y-Gerät (Y-gadget), also known as Wotan, was a radio navigation system used by the Luftwaffe in World War II to aid bomber navigation.
ZOMM, LLC ZOMM, LLC, headquartered in Tulsa, Oklahoma, is an emerging technology company specializing in the design and manufacturing of wireless and hands-free devices for mobile phones and other consume...