Coherent large beamwidth processing of radio-echo sounding data
نویسندگان
چکیده
منابع مشابه
Radio Echo Sounding of the Greenland Inland Ice
Radio echo sounding has been used for a number of years in the exploration of polar ice such as the inland ice in Greenland and Antarc tica. By means of this technique a number of important glaciological and geophysical parameters may be deter mined. Examples are ice thickness, bedrock topography and structure, stratification patterns which are used for climate and flow patterns studies, and ...
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We have developed a miniature high-power impulse transmitter for radio-echo sounding of glaciers. It features two synchronous second break-down pulse generators operating in a differential configuration. Specifications include bipolar 550 V pulses having rise times less than 2 ns, 512 Hz repetition rate, 180 mA at 10-14 V d.c. operating power, 5 mA standby current and maximum dimension of 12 cm...
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In 1991, NASA initiated a research program for testing airborne laser and radar altimeters for measuring surface elevation of the Greenland ice sheet in conjunction with a coordinated set of surface measurements for validating and interpreting satellite data sets. In 1993, the airborne program was expanded to include the University of Kansas airborne radio echo sounder for acquiring ice thickne...
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Two methods for the measurement of the column water vapor in the atmosphere are compared with respect to their usefulness for imaging spectrometer campaigns. First, in situ measurements of 26 radiosonde launches are integrated with height to obtain the water vapor column. Second, simultaneous ground irradiance measurements using a sun photometer are inverted to column water vapor amounts. An ex...
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Introduction On July 17, 1995 the U.S. Air Force announced “ .. that today the Global Positioning System (GPS) satellite constellation has met all requirements for Full Operational Capability”. Apart from precise positioning GPS signals also can be used to derive characteristic properties of the propagation medium (neutral atmosphere and ionosphere). Onboard the Low-Earth-Orbiting MICROLAB-1 sa...
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ژورنال
عنوان ژورنال: The Cryosphere
سال: 2018
ISSN: 1994-0424
DOI: 10.5194/tc-12-2969-2018