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Emergency Locator Beacon
An emergency locator beacon is a radio beacon, a portable battery powered radio transmitter, used to locate airplanes, vessels, and persons in distress and in need of immediate rescue. Various types of emergency locator beacons are carried by aircraft, ships, vehicles, hikers and cross-country skiers. In case of an emergency, such as the aircraft crashing, the ship sinking, or a hiker becoming lost, the transmitter is deployed and begins to transmit a continuous radio signal, which is used by search and rescue teams to quickly find the emergency and render aid. The purpose of all emergency locator beacons is to help rescuers find survivors within the so-called "golden day", the first 24 hours following a traumatic event, during which the majority of survivors can usually be saved. Beacon types COSPAS-SARSAT 406 MHz Distress Beacons Cospas-Sarsat is an international humanitarian consortium of governmental and private agencies which acts as a worldwide dispatcher for search ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Beacon
In navigation, a radio beacon or radiobeacon is a kind of beacon, a device that marks a fixed location and allows direction-finding equipment to find relative bearing. But instead of employing visible light, radio beacons transmit electromagnetic radiation in the radio wave band. They are used for direction-finding systems on ships, aircraft and vehicles. Radio beacons transmit a continuous or periodic radio signal with limited information (for example, its identification or location) on a specified radio frequency. Occasionally, the beacon's transmission includes other information, such as telemetric or meteorological data. Radio beacons have many applications, including air and sea navigation, propagation research, robotic mapping, radio-frequency identification (RFID), near-field communication (NFC) and indoor navigation, as with real-time locating systems (RTLS) like Syledis or simultaneous localization and mapping (SLAM). Types Radio-navigation beacons The most b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automatic Packet Reporting System
Automatic Packet Reporting System (APRS) is an amateur radio-based system for real time digital communications of information of immediate value in the local area. Data can include object Global Positioning System (GPS) coordinates, weather station telemetry, text messages, announcements, queries, and other telemetry. APRS data can be displayed on a map, which can show stations, objects, tracks of moving objects, weather stations, search and rescue data, and direction finding data. APRS data is typically transmitted on a single shared frequency (depending on country) to be repeated locally by area relay stations (digipeaters) for widespread local consumption. In addition, all such data are typically ingested into the APRS Internet System (APRS-IS) via an Internet-connected receiver (IGate) and distributed globally for ubiquitous and immediate access. Data shared via radio or Internet are collected by all users and can be combined with external map data to build a shared live v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Locator Unit
A Mountain Locator Unit or MLU was a radio transmitter for use by mountain climbers as an emergency locator beacon when the wearer needs rescue. The MLUs were simple radio beacons, and thus required search and rescuers to use traditional radio direction finding (RDF or DF) equipment to obtain a bearing, but not a precise location, to the beacon. Unique to Mount Hood, these devices could be rented for $5 at Portland-area outdoor shops and the Inn, open 24 hours a day. The units were available from the late 1980s until 2017, but advances in technology now provide superior locating information by devices such as a PLB, InReach or Spot. Groups scaling Mount Hood are recommended to carry an emergency signaling device and all climbers must register before climbing and sign out upon return. The MLU was designed after a school group with two adults and seven children perished on Mount Hood in 1986. (See Mount Hood climbing accidents.) The bodies of some of the group were found i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avalanche Transceiver
An avalanche transceiver or avalanche beacon is a type of emergency locator beacon, a radio transceiver (a transmitter and receiver in one unit) operating at 457 kHz for the purpose of finding people buried under snow. They are widely carried by skiers, particularly back country skiers for use in case a skier is buried by an avalanche. Before setting out on an expedition, all the members of a group activate their transceivers in the transmit mode, causing the device to emit low-power pulsed radio signals during the trip. Following an avalanche, if some members of the ski party are buried, the others may switch their transceivers from transmit into receive mode, allowing use as a radio direction finding device to search for signals coming from the lost skiers. The avalanche beacon is an active device powered by batteries; a ski suit may also contain a passive RECCO transponder sewn into the clothing. Early avalanche transceivers transmitted at 2.275 kHz. In 1986, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RECCO
The RECCO is a rescue technology used by organised rescue teams as an additional tool to more quickly locate people buried by an avalanche or lost in the outdoors. The system is based on a harmonic radar system and composed by a detector and a passive reflector integrated into outdoor clothing and gears. History The RECCO rescue technology was developed by Magnus Granhed, in response to his personal experience with a fatal avalanche accident in Åre, Sweden, in 1973. Starting in the winter of 1978–1979, Granhed collaborated with Bengt Enander's team at the Department of Electromagnetic Theory, Royal Institute of Technology in Stockholm to develop an avalanche rescue system, using the principle of harmonic radar. Granhed formed RECCO AB in 1983 and created the first functional prototype. In 1987, a woman was localised with the RECCO rescue technology from a helicopter in Lenzerheide, Switzerland, in the first live rescue found using the technology. In 2015, RECCO introduce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Somewear Global Hotspot
A Satellite Emergency Notification Device or SEND is a portable emergency notification and locating device which uses commercial satellite systems rather than the COSPAS-SARSAT satellite system. An example of this device is SPOT. The devices use an internal GPS chip to gather location information. When the SEND is triggered, this information is sent via commercial satellite to a commercial monitoring agency whose role is to pass the information to an appropriate responding agency. The responding agency contacted depends, in part, on the location. Examples of responding agencies would be military Search and Rescue, Coast Guard, local police, voluntary Search and Rescue. Typical users/purchasers of these devices are participants in activities such as hiking, mountain biking, climbing, boating and flying. They are also useful for those who work in remote areas (loggers, foresters, geologists, fisheries and wildlife staff). Additional features are increasingly being offered: sending pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spidertracks
Spidertracks is a privately held New Zealand based company specialising in the development of hardware and software for the general aviation industry. The company specialises in flight tracking, aviation communication, and flight data acquisition. History Spidertracks was founded by James McCarthy in 2007 in the small rural town of Pohangina, just outside Palmerston North, New Zealand. Following the death of high-profile businessman Michael Erceg in a helicopter crash in 2005, Erceg's downed aircraft was not located for two-weeks due to the failure of an Emergency Locator Transmitter (ELT). McCarthy and some associates saw the opportunity to develop a lightweight, portable, 'real-time' GPS tracking device for the aviation industry. The team developed a device known as a 'Spider' – a small device that plugs into an aircraft's auxiliary power outlet and is mounted in the cockpit. Information such the aircraft's location, altitude, speed, and direction were transmitte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellite Emergency Notification Device
A Satellite Emergency Notification Device or SEND is a portable emergency notification and locating device which uses commercial satellite systems rather than the COSPAS-SARSAT satellite system. An example of this device is SPOT. The devices use an internal GPS chip to gather location information. When the SEND is triggered, this information is sent via commercial satellite to a commercial monitoring agency whose role is to pass the information to an appropriate responding agency. The responding agency contacted depends, in part, on the location. Examples of responding agencies would be military Search and Rescue, Coast Guard, local police, voluntary Search and Rescue. Typical users/purchasers of these devices are participants in activities such as hiking, mountain biking, climbing, boating and flying. They are also useful for those who work in remote areas (loggers, foresters, geologists, fisheries and wildlife staff). Additional features are increasingly being offered: sending pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SPOT Satellite Messenger
SPOT is a GPS tracking device that uses the Globalstar satellite network to provide text messaging and GPS tracking (depending on the subscription type purchased). It has a coverage area that includes a large portion of the planet, with the exception of extreme northern and southern latitudes and parts of the Pacific Ocean. Depending on the product, SPOT can send and receive communications. The device is sold by SPOT LLC, a subsidiary of Globalstar. With the purchase of a subscription, SPOT allows short (41 character) user-defined text messages which can be sent to a list of telephone numbers and e-mail addresses. This subscription also allows users to push their location to emergency services. Users can share their location and messages based on their account preference, alerting friends and family to their whereabouts. In early 2018, SPOT launched the SPOT X, a two-way satellite messaging device with GPS location tracking, navigation Navigation is a field of study that foc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AIS-SART
The AIS-SART is a self-contained radio device used to locate a survival craft or distressed vessel by sending updated position reports using a standard Automatic Identification System (AIS) class-A position report. The position and time synchronization of the AIS-SART are derived from a built in GNSS receiver (e.g. GPS). Shipboard Global Maritime Distress Safety System (GMDSS) installations include one or more search and rescue locating devices. These devices may be either an AIS-SART (AIS Search and Rescue Transmitter) (from January 1, 2010), or a radar-SART (Search and Rescue Transponder). The AIS-SART derives position and time synchronization from a built in GNSS receiver. Once per minute, the position is sent as a series of eight identical position report messages (four on 161.975 MHz and four on 162.025 MHz). This scheme creates a high probability that at least one of the messages is sent on the highest point of a wave. AIS SARTs are typically cylindrical and bri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
