Spelling suggestions: "subject:"0ptical radar"" "subject:"aoptical radar""
21 |
Lidar studies of the middle atmosphere / by Philip Stephen Argall.Argall, Philip Stephen January 1993 (has links)
Bibliography leaves [31] - [40] / viii, 135, [40] leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 1994
|
22 |
Identification of layered cloud occurrences from the Lidar In-Space Technology Experiment and advanced very high resolution radiometer imageryStevermer, Amy J. 14 August 1997 (has links)
Realistic assessment of the vertical distribution of clouds, particularly the occurrence
of multi-layered systems, is critical for accurate calculations of radiative transfer in
general circulation models. Such information is also useful in the design and improvement
of satellite retrieval techniques. Current methods for retrieving cloud properties
from satellite data assume that the clouds reside in single-layered systems. These methods
are not expected to be successful for multi-layered systems.
Attempts to specifically address the question of cloud layering have thus far been
limited, due in part to the difficulties of inferring vertical cloud structure from either
surface or satellite data. In situ observations, such as those provided by aircraft, are
available only for localized regions and are limited in time. This study uses data from
a lidar instrument flown onboard the space shuttle and satellite imagery data to identify
the frequencies of occurrence of layered cloud systems at different spatial scales over
various regions of the globe.
The Lidar In-Space Technology Experiment (L1TE) was flown on Space Shuttle
Discovery in September 1994 and provided global-scale, high vertical resolution profiles
of the earth's troposphere and lower stratosphere. Analysis of the LITE observations
requires distinguishing clouds residing in organized, well-defined layers from clouds that
are distributed in altitude throughout the troposphere. The analysis employs a histogram
technique in which peaks having some critical number of observations are considered to
correspond to observations belonging to well-defined cloud layers.
Advanced Very High Resolution Radiometer (AVHRR) data for the 11-day duration
of the LITE mission are analyzed using the spatial coherence method. This method
identifies regions of locally uniform emission which are associated either with cloud-free
pixels or with overcast pixels corresponding to clouds in a single layer at a well-defined
altitude. The number of layers present is determined by the number of overcast radiances
associated with pixel arrays exhibiting locally uniform emission within the region.
Layer statistics are compiled for the Pacific, Atlantic, and Indian Oceans and the
North and South American, African, European, Asian, and Australian continents using
horizontal scales of 60 and 250 km. The results indicate a strong dependence on the
spatial scale chosen for the analysis, with two- and three-layered systems more prevalent
at the 250-km scale. Analysis of cloud-top altitudes from LITE and AVHRR show
that low-level cloud systems comprise the majority of the observations over both ocean
and land. / Graduation date: 1998
|
23 |
Effectiveness of extracting water surface slopes from LIDAR data within the active channel : Sandy River, Oregon, USA /English, John Thomas, January 2008 (has links)
Typescript. Includes vita and abstract. Includes appendix: ArcGIS VBA script code. Includes bibliographical references (leaves 106-108). Also available online in Scholars' Bank.
|
24 |
State-of-the-art remote sensing geospatial technologies in support of transportation monitoring and managementPaska, Eva Petra, January 2009 (has links)
Thesis (Ph. D.)--Ohio State University, 2009. / Title from first page of PDF file. Includes bibliographical references (p. 213-222).
|
25 |
An empirical study of the lidar ratio and its variability, with implications for determining climate forcing by satellite-borne lidar /Masonis, Sarah J. January 2001 (has links)
Thesis (Ph. D.)--University of Washington, 2001. / Vita. Includes bibliographical references (leaves 236-248).
|
26 |
Modelling 3D urban landscape ecology using airborne lidar dataChen, Ziyue January 2014 (has links)
No description available.
|
27 |
Optical studies of the upper atmosphereBartusek, Karel January 1970 (has links)
iv, 146 leaves : ill., appendices / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Physics, 1971
|
28 |
Signal processing methods for airborne lidar bathymetry /Lane, Dallas W. January 2001 (has links) (PDF)
Thesis (M.Eng.Sc.)--University of Adelaide, Dept. of Electrical and Electronic Engineering, 2002? / "August 2001." Includes bibliographical references (leaves 77-80).
|
29 |
High precision laser radar tracking device /Raghavan, V. P. January 1991 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 1991. / Typescript. Includes bibliographical references (p. 117-121).
|
30 |
Compact, mid-infrared laser source for remote sensing of gas effluentsBerg, Trenton Jeffery. January 2009 (has links) (PDF)
Thesis (MS)--Montana State University--Bozeman, 2009. / Typescript. Chairperson, Graduate Committee: Joseph A. Shaw. Includes bibliographical references (leaves 110-112).
|
Page generated in 0.0848 seconds