ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    facet.materialart.
    Unknown
    Enhancement of photon-bunching effects. (1969)
    In:  Other Sources
    Details
    Publication Date: 2011-08-12
    Description: Photon bunching effect in spatially coherent noise field enhanced by superposing monochromatic coherent signal and/or shaping incident noise spectra
    Keywords: COMMUNICATIONS
    Type: ; ADEMIE DES SCIENCES
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    Ambient ammonia measurements using laser photo-acoustic spectroscopy (1981)
    In:  CASI
    Details
    Publication Date: 2019-07-20
    Description: Ammonia concentrations reached minimal levels (approximately 0.1 ppb) in early winter, followed by a sudden later winter increase. A direct relationship between ambient ammonia levels and air temperature was inferred from the data (linear correlation coefficient r=0.53). Ammonia concentrations were determined to be directly related to the absolute humidity of the air (r=0.72); a weaker relationship between ammonia concentrations and relative humidity was discovered (r=0.37). The data also indicated that ammonia levels were generally higher within continental air masses than those of maritime origin. Soil parameters such as pH and moisture content were found to have a major bearing on the release of gaseous ammonia from soils in the region.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-CR-164188
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 3
    facet.materialart.
    Unknown
    A quantum model of communication systems (1968)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Mathematical model of communication systems including quantum effects
    Keywords: COMMUNICATIONS
    Type: NASA-TM-X-61522
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 4
    facet.materialart.
    Unknown
    Investigation of an Optimum Detection Scheme for a Star-Field Mapping System (1970)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: An investigation was made to determine the optimum detection scheme for a star-field mapping system that uses coded detection resulting from starlight shining through specially arranged multiple slits of a reticle. The computer solution of equations derived from a theoretical model showed that the greatest probability of detection for a given star and background intensity occurred with the use of a single transparent slit. However, use of multiple slits improved the system's ability to reject the detection of undesirable lower intensity stars, but only by decreasing the probability of detection for lower intensity stars to be mapped. Also, it was found that the coding arrangement affected the root-mean-square star-position error and that detection is possible with error in the system's detected spin rate, though at a reduced probability.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-TN-D-5972 , L-6477
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...