08 - Oceanic remote sensing Palm Islands UAE Some Good New...

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1 Oceanic remote sensing Oceanic remote sensing Palm Islands, UAE Some Good New: Technology • It has really only been within the last 50 years that technology has advanced to the point that we can examine the oceans in systematic, scientific, and, most importantly, noninvasive ways. – vessels – submersibles – diving remote sensing What is Remote Sensing? General: acquisition of information of an object or phenomenon, by the use of a device that is not in physical or intimate contact with the object Science of Remote Sensing: instrument-based techniques employed in the acquisition and measurement of spatially organized (commonly geographically distributed) data/information on some property (spectral; spatial; physical) of an array of target points (pixels) within the sensed scene that correspond to features, objects, and materials Done by applying one or more recording devices not in physical, intimate contact with the item under surveillance by utilizing: – electromagnetic radiation, force fields, or acoustic energy sensed by recording cameras, radiometers and scanners, lasers, radio frequency receivers, radar systems, sonar, thermal devices, sound detectors, seismographs, magnetometers, gravimeters, scintillometers, and other instruments via aircraft, spacecraft, satellite, buoy, ship Some of the worlds first aerial photographs were taken not by humans but by birds. In 1903, German engineer Julius Neubronner combined an analog camera and timer, which he attached to a pigeons neck. The German military took notice of Neubronners innovative approach to aerial photography, and by World War II pigeons were collecting secret aerial photography for both Allied and Axis forces.
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2 You are actively engaged in remote sensing right now! • A physical quantity (light) emanates from that screen, whose imaging electronics provides a source of radiation. • The radiated light passes over a distance, and thus is "remote" to some extent, until it encounters and is captured by a sensor (your eyes). • Each eye sends a signal to a processor (your brain) which records the data and interprets this into information. • Several of the human senses gather their awareness of the external world almost entirely by perceiving a variety of signals, either emitted or reflected, actively or passively, from objects that transmit this information in waves or pulses. • All sensations that are not received through direct contact are remotely sensed. Dangerous, inaccessible, temporal, spatially continuous Remote Sensing involves gathering data and information about the physical "world" by detecting and measuring signals composed of radiation, particles, and fields emanating from objects located beyond the immediate vicinity of the sensor device(s).
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08 - Oceanic remote sensing Palm Islands UAE Some Good New...

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