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The bathymetric data have been created and visualised with SDB-Online webapp. Satellite-Derived Bathymetry (SDB) is the calculation of shallow water depth from active or passive satellite sensors. The technology requires a sensor (hardware) and relevant algorithms (software) to derive bathymetric measurements from the data recorded by the sensor.
Airborne and satellite data acquisition have made further advances possible in visualisation of underwater surfaces: high-resolution aerial photography and orthoimagery is a powerful tool for mapping shallow clear waters on continental shelves, and airborne laser bathymetry, using reflected light pulses, is also very effective in those ...
Airborne laser. An airborne laser (ABL) is a laser system operated from a flying platform, as in the: Soviet/Russian Beriev A-60 (1981, active) American Boeing YAL-1 (2002-2012, scrapped) An American modified NKC-135A unit (1975-1984, in storage.)
Bathymetric lidar is most useful in the 0 to 10 m depth range in coastal mapping. [11] On average in fairly clear coastal seawater lidar can penetrate to about 7 m, and in turbid water up to about 3 m. An average value is for the green laser light to penetrate water about 1.5 to 2 times Secchi depth.
Scrapped. The Boeing YAL-1 airborne laser testbed was a modified Boeing 747-400F with a megawatt-class chemical oxygen iodine laser (COIL) mounted inside. It was primarily designed to test its feasibility as a missile defense system to destroy tactical ballistic missiles (TBMs) while in boost phase. The aircraft was designated YAL-1A in 2004 by ...
Number built. 2. Developed from. Ilyushin Il-76MD. The Beriev A-60 is a Russian airborne laser laboratory aircraft based on the Ilyushin Il-76MD transport— it was originally developed in the former Soviet Union for its airborne forces. In the 1970s a special aviation complex was established by the Soviets at Taganrog machine-building factory ...
The laser pulse can also be reflected by the surface of a satellite without a retroreflector, which is used for tracking space debris. [1] Satellite laser ranging is a proven geodetic technique with significant potential for important contributions to scientific studies of the earth/atmosphere/ocean system. It is the most accurate technique ...
Lasers and aviation safety. Lasers are one of the main threats of aviation safety. Under certain conditions, laser light or other bright lights (spotlights, searchlights) directed at aircraft can be a hazard. The most likely scenario is when a bright visible laser light causes distraction or temporary flash blindness to a pilot, during a ...