Sökning: "Spectral signature"

Visar resultat 1 - 5 av 25 avhandlingar innehållade orden Spectral signature.

1. 1. On the Military Utility of Spectral Design in Signature Management : a Systems Approach

   Författare :Kent Andersson; Jouko Vankka; Gunnar Hult; Hans Kariis; Hans Liwång; Harold Lawson; Jari Hartikainen; Försvarshögskolan; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; military utility; survivability; signature management; systems engineering; camouflage; Low Observable Technology; spectral design; multi-spectral; Försvarssystem; Military Technology;

   Sammanfattning : There is an ongoing duel between military sensor development and developments in signature management. The last decade, with warfare characterized by joint expeditionary operations and asymmetry, has favored sensors. LÄS MER

3. 2. Spectral signature measurements and image processing for geological remote sensing

   Författare :Kjell Wester; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; naturgeografi; Physical Geography;

   Sammanfattning : This work focuses on (i) spectral signatures of rocks and lichens, and on the use of satellite images for (ii) survey mapping of areas dominated by exposed bedrock, (iii) bedrock mapping and mineral prospecting.(i) Laboratory measurements demonstrate that a lichen cover can significantly mask the spectral reflectance of rocks. LÄS MER

4. 3. Measurement and Control of Attosecond Light Fields

   Författare :Erik Mansten; Atomfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Pulse characterization; Spectral signature; Two-color generation; Pulse compression; Attosecond pulse trains; High-order harmonics; Pulse shaping; Tunable; Fysicumarkivet A:2009:Mansten;

   Sammanfattning : Attosecond pulses are used to study electron dynamics in atoms and molecules. In this thesis, schemes to control the generation of attosecond pulses and pulse-shaping techniques to compress the pulses are presented. Generation of attosecond pulses requires high intensity, which is reached by focusing a pulsed femtosecond laser. LÄS MER

5. 4. Multispectral reflectance measurements and signature analysis

   Författare :Wolter Arnberg; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : The use of aerial photographs and satellite images may be.facilitated by a deeper knowledge of the reflection properties of natural features. This thesis, which includes a concluding essay and three more papers, is a study of two methods of multispectral reflectance measurements. LÄS MER

7. 5. A complete procedure for modeling radiative heat transfer and spectral signature nongray participating media

   Författare :Thomas Badinand; KTH; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER