laser altimeter
Calibrating mars orbiter laser altimeter pulse widths at mars science laboratory candidate landing sites
... of laser altimeter backscatter shots from the surface of Mars can be used to estimate surface roughness globally at a smaller length-scales than can be derived from along-track topographic pro fi les alone ...
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On retrieving sea ice freeboard from ICESat laser altimeter
... In principle, the freeboards derived by the LLE method can also be corrected for snow depth in leads and lead width, but this was not done for the GSFC product. Although the LLE method selects only the lowest elevations ...
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A sample design for globally consistent biomass estimation using lidar data from the Geoscience Laser Altimeter System (GLAS)
... Geosciences Laser Altimeter System (GLAS) from 2002 to 2008 has the potential to form the basis of a globally consistent sample-based inventory of forest ...
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Improved Retrieval of Sea Ice Thickness and Density from Laser Altimeter
... SIT, derived from RA depends on the same input variables and their uncertainties as the SIT derived from laser altimeter (snow depth and density, ice, water density and freeboard). Collocated sea ice draft, ...
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Laser link experiment with the Hayabusa2 laser altimeter for in flight alignment measurement
... the laser altimeter on Hayabusa was used to determine the FOV axes by detect- ing the footprints of laser shot with the Near-Infrared Spectrometer (NIRS) during the exposure time because it was ...
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Comparing Tree Heights among Montane Forest Blocks of Kenya Using LiDAR Data from GLAS
... Geoscience Laser Altimeter System (GLAS) on the Ice Cloud and Land Elevation Satellite (ICE- SAT) for the period 2003-2009 was used for 2146 circular plots, of ...
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ICESat GLAS Elevation Changes and ALOS PALSAR InSAR Line of Sight Changes on the Continuous Permafrost Zone of the North Slope, Alaska
... Geoscience Laser Altimeter System (ICESat GLAS) and the JAXA Advanced Land Observing Satellite Phased Array type L-band Synthetic Aperture Radar (ALOS PALSAR) on the continuous permafrost zone of the North ...
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ICESat Derived Elevation Changes on the Lena Delta and Laptev Sea, Siberia
... Geoscience Laser Altimeter System (GLAS) to investigate surface changes across the Lena Delta and sea ice of the coastal Laptev Sea, Sibe- ria during winters of 2003 through ...
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Testing hypotheses of the cause of peripheral thinning of the Greenland Ice Sheet: is land-terminating ice thinning at anomalously high rates?
... Here we use laser altimeter data from NASA’s Program for Arctic Regional Climate Assessment PARCA to update existing surface elevation change data the 2006 data is previously unpublished[r] ...
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History and current processes of the Martian polar layered deposits
... Orbiter Laser Altimeter (MOLA) (Zuber et ...of laser pulses to the surface and back thereby get- ting the range from the spacecraft to the ...individual laser shots is accurate to a few 10’s ...
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A new digital elevation model of Antarctica derived from CryoSat-2 altimetry
... airborne laser altimeter measurements, obtained during NASA Operation IceBridge campaigns, in several lo- cations covering Antarctica’s ice sheet and ice ...
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Altitude measurement using laser beam reflected from water surface
... using laser beam is ...the laser beam ( l = 700 nm , p = 10 mW ) was modulated by a sine wave having a fixed ...Keywords: laser altimeter, phase shift, heterodyne technique, water ...
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Measuring snow thickness over Antarctic sea ice with a helicopter borne 2 8 GHz FMCW radar
... From the above calculations it is again clear that in both the radar and laser altimeter retrieval, uncertainty in snow thickness contributes the greatest error to sea ice thickness esti[r] ...
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To Measure the Changing Relief of Arctic Rivers: A Synthetic Aperture RADAR Experiment in Alaska
... Geoscience Laser Altimeter System (ICESat GLAS) surface scattering to line-of- sight changes derived by the Advanced Land Observing Satellite Phased Array L-band Synthetic Aperture RADAR (ALOS PALSAR) ...
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Direct Geometric Positioning for the Three Dimensional Imaging Microware Altimeter
... microware altimeter, a geometric correction algorithm is proposed based on the Range-Doppler equations, and some main positioning error sources are analyzed which including ground elevation error and atmosphere ...
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Satellite gravity – enhancements from new satellites and new altimeter technology
... Satellite altimeter gravity data sets have always been well controlled at long wavelengths, due to the global network of satellite tracks, but short wavelengths are less accurate; as shown in Figure 7, accuracy ...
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Retrieval of the ice sheet topography by satellite radar altimeter echoes
... The altimeter does not record the complete echo due to hardware and telemetry ...the altimeter in accordance with the previous estimate. The altimeter then tracks the half-power point on the return ...
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The impact of weather and climate variability upon estimates of ice-sheet mass balance from satellite radar altimeters
... These parameters were measured in Antarctica using ERS-1 altimeter data and compared with satellite radiometer data, glaciological observations, and a scattering mod[r] ...
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Beamwidth Enhancement of Array Microstrip Antenna for Radio Altimeter Application
... radar altimeter, imt, wimax and c-band satellite downlink applications,” 2016International Conference on Global Trends in Signal Processing, Information Computing and Communication, ...
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Utilisation of CryoSat-2 SAR altimeter in operational ice charting
... We take the ice stage of development from the weekly ice charts published by the AARI (Bushuev and Loshchilov, 2007). The AARI ice charts are available online from http: //www.aari.ru/. We downloaded the charts from the ...
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