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Topic Area: Remote Sensing

Displaying records 11 to 20 of 25 records.
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11. Molecular spectroscopy with frequency combs
Topic: Remote Sensing
Published: 3/1/2010
Author: Ian R Coddington
Abstract: Pulsed femtosecond frequency combs are rapidly developing as a powerful spectroscopic tool. As a spectroscopic source stabilized frequency combs potentially offer broad spectral coverage, near perfect frequency accuracy, low timing jitter and broadb ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904602

12. Polarized Optical Scattering Signatures from Biological Materials
Topic: Remote Sensing
Published: 1/11/2010
Authors: W. E. Martin, E. Hesse, J. H. Hough, William Sparks, C. S. Cockell, Z. Ulanowski, Thomas Avery Germer, B. Kaye
Abstract: The polarization of laser light backscattered from biological samples has been measured over the wavelength range 350 to 850nm. Incident circular, linearly polarized, and unpolarized light produces significant spectrally prominent scattered polari ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906031

13. Precision ranging LIDAR using femtosecond fiber lasers
Topic: Remote Sensing
Published: 6/17/2009
Authors: Nathan Reynolds Newbury, Ian R Coddington, William C Swann
Abstract: We discuss a coherent laser radar that uses two coherent femtosecond fiber lasers to perform absolute ranging at long distance. One coherent femtosecond fiber lasers acts as a source and the other as a local oscillator for heterodyne detection of th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902779

14. A microfabricated photonic magnetometer
Topic: Remote Sensing
Published: 6/14/2009
Authors: Jan Preusser, Svenja A Knappe, Vladislav Gerginov, John E Kitching
Abstract: A system for sensing magnetic fields is proposed, composed of an array of passive microfabricated alkali atom sensor heads coupled to a control unit using only optical interconnects. The optical coupling can be achieved by either free-space transmiss ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905648

15. Absolute Flux Calibration of Stars; Calibration of the Reference Telescope
Topic: Remote Sensing
Published: 6/2/2009
Authors: Allan W. Smith, John Taylor Woodward IV, Colleen Alana Jenkins, Steven W Brown, Keith R Lykke
Abstract: Absolute stellar photometry is based on 1970s terrestrial measurements of the star Vega with instruments calibrated using the Planckian radiance from a Cu fixed-point blackbody. Significant advances in absolute radiometry have been made in the last 3 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900900

16. Rapid and precise absolute distance measurements at long range
Topic: Remote Sensing
Published: 6/1/2009
Authors: Ian R Coddington, William C Swann, Ljerka Nenadovic, Nathan Reynolds Newbury
Abstract: The ability to determine absolute distance to an object is one of the most basic measurements of remote sensing. High precision ranging has important applications in both large-scale manufacturing and in future tight formation-flying satellite missio ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901111

17. Towards a Remote Sensing Capability for Life s Chiral Signature using Circular Polarization
Topic: Remote Sensing
Published: 5/12/2009
Authors: William Sparks, James H. Hough, Thomas Avery Germer, Feng Chen, Shiladitya DasSarma, Priya DasSarma, Frank Robb, Neill Reid, Nadine Manset, Ludmilla Kolokolova, F. D. Macchetto, William Martin, Ed Turner
Abstract: The unique macroscopic homochirality of biological material offers the prospect of being detectable remotely using circular polarization. To explore this concept, we present spectropolarimetry of primitive photosynthetic microbial organisms. The refl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842489

18. Circular Polarization in Scattered Light as a Possible Biomarker
Topic: Remote Sensing
Published: 3/2/2009
Authors: Thomas Avery Germer, William Sparks, James H. Hough, Ludmilla Kolokolova, Feng Chen, Shiladitya DasSarma, Priya DasSarma, Frank Robb, Nadine Manset, Neill Reid, F. D. Macchetto, William Martin
Abstract: Biological molecules exhibit homochirality and are optically active. Therefore, it is possible that the scattering of light by biological molecules might result in a macroscopic signature in the form of circular polarization. If this is the case, the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901371

19. Downwelling Surface Spectral Irradiance Measurements with the Marine Optical BuoY
Topic: Remote Sensing
Published: 12/31/2008
Authors: Bettye C Johnson, M Feinholz, S Flora, M Yarbrough, Terrance Houlihan, D Peters, Dennis Clark
Abstract: The Marine Optical BuoY (MOBY), off the coast of Lanai, Hawaii, has made in situ, in-water up-welling spectral radiance and downwelling surface spectral irradiance measurements since July 1997. The MOBY observatory concept was developed and implemen ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842591

20. Measurement science for climate remote sensing
Topic: Remote Sensing
Published: 8/20/2008
Authors: Gerald T Fraser, Steven W Brown, Raju Vsnu Datla, Bettye C Johnson, Keith R Lykke, Joseph Paul Rice
Abstract: The Earth s climate is very complex and highly variable, making it difficult to measure and model small changes that occur over decadal and longer time scales. The resulting uncertainties in measurement and modeling underlie the longterm debate over ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842531