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
Filter
  • Other Sources  (6)
  • Instrumentation and Photography  (3)
  • Spacecraft Instrumentation and Astrionics  (2)
  • Geosciences (General)  (1)
  • 1
    facet.materialart.
    Unknown
    Performance Modeling of an Airborne Raman Water Vapor Lidar (2000)
    In:  CASI
    Details
    Publication Date: 2013-08-29
    Description: A sophisticated Raman lidar numerical model had been developed. The model has been used to simulate the performance of two ground-based Raman water vapor lidar systems. After tuning the model using these ground-based measurements, the model is used to simulate the water vapor measurement capability of an airborne Raman lidar under both day-and night-time conditions for a wide range of water vapor conditions. The results indicate that, under many circumstances, the daytime measurements possess comparable resolution to an existing airborne differential absorption water vapor lidar while the nighttime measurement have higher resolution. In addition, a Raman lidar is capable of measurements not possible using a differential absorption system.
    Keywords: Instrumentation and Photography
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    The Mercury Laser Altimeter Instrument for the MESSENGER Mission (2006)
    In:  CASI
    Details
    Publication Date: 2018-06-06
    Description: The Mercury Laser Altimeter (MLA) is one of the payload science instruments on the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) mission, which launched on 3 August 2004. The altimeter will measure the round trip time-of-flight of transmitted laser pulses reflected from the surface of the planet that, in combination with the spacecraft orbit position and pointing data, gives a high-precision measurement of surface topography referenced to Mercury's center of mass. The altimeter measurements will be used to determine the planet's forced librations by tracking the motion of large-scale topographic features as a function of time. MLA's laser pulse energy monitor and the echo pulse energy estimate will provide an active measurement of the surface reflectivity at 1064 nm. This paper describes the instrument design, prelaunch testing, calibration, and results of post-launch testing.
    Keywords: Spacecraft Instrumentation and Astrionics
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 3
    facet.materialart.
    Unknown
    Development of the Multi-Angle Stratospheric Aerosol Radiometer (MASTAR) (2018)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The contribution of atmospheric aerosols to the Earth's energy budget is an important and relatively uncertain component of the Earth system, with correspondingly large uncertainties implied for climate models. Comprehensive observations of the vertical profile of aerosol extinction are needed to accurately characterize these particles (e.g. composition, size, spatial and temporal distribution) to properly account for their climate impacts and constrain models. Satellite limb scattering measurements provide superior results for observations of stratospheric aerosols compared to occultation measurements. We are developing a compact instrument called Multi-Angle Stratospheric Aerosol Radiometer (MASTAR) that simplifies the current OMPS Limb Profiler design to fit into a 3U Cubesat configuration, and also provides important supplemental information through the use of multiple simultaneous viewing directions.
    Keywords: Geosciences (General)
    Type: GSFC-E-DAA-TN65934 , IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium (ISSN 2153-6996) (e-ISSN 2153-7003); 18261431|IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium; Jul 22, 2018 - Jul 27, 2018; Valencia; Spain
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 4
    facet.materialart.
    Unknown
    Three-dimensional range imaging apparatus and method (2011)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A three-dimensional range imager includes a light source for providing a modulated light signal, a multiplexer, an optical fiber connecting the light source to the multiplexer, a plurality of optical fibers connected at first ends to the multiplexer and at second ends to a first fiber array, and a transmitter optic disposed adjacent the first fiber array for projecting a pixel pattern of the array onto a target.
    Keywords: Instrumentation and Photography
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 5
    facet.materialart.
    Unknown
    Target Assembly to Check Boresight Alignment of Active Sensors (2011)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: A compact and portable target assembly (Fig. 1) has been developed to measure the boresite alignment of LRO's Lunar Orbiter Laser Altimeter (LOLA) instrument at the spacecraft level. The concept for this target assembly has evolved over many years with earlier versions used to test the Mars Observer Laser Altimeter (MOLA), the Geoscience Laser Altimeter System (GLAS), and the Mercury Laser Altimeter (MLA) space-based instruments.
    Keywords: Instrumentation and Photography
    Type: GSC-15789-1 , NASA Tech Briefs, April 2011; 6-7
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 6
    facet.materialart.
    Unknown
    Optical System Design and Integration of the Global Ecosystem Dynamics Investigation Lidar (2019)
    In:  CASI
    Details
    Publication Date: 2019-09-14
    Description: The Global Ecosystem Dynamics Investigation (GEDI) instrument was designed, built, and tested in-house at NASAs Goddard Space Flight Center and launched to the International Space Station (ISS) on December 5, 2018. GEDI is a multi-beam waveform LiDAR (light detection and ranging) designed to measure the Earths global tree height and canopy density using 8 laser beam ground tracks separated by roughly 600 meters. Given the ground coverage required and the 2 year mission duration, a unique optical design solution was developed. GEDI generates 8 ground sampling tracks from 3 transmitter systems viewed by a single receiver telescope, all while maximizing system optical efficiency and transmitter to receiver boresight alignment margin. The GEDI optical design, key optical components, and system level integration and testing are presented here. GEDI began 2 years of science operations in March 2019 and so far, it is meeting all of its key optical performance requirements and is returning outstanding science.
    Keywords: Spacecraft Instrumentation and Astrionics
    Type: GSFC-E-DAA-TN70442 , SPIE Remote Sensing; Sep 09, 2019 - Sep 12, 2019; Strasbourg; France|Proceedings of SPIE (ISSN 0277-786X) (e-ISSN 1996-756X); 11128; 111280J
    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...