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Sunday, November 29, 2020 | History

3 edition of Final report for diode-pumped laser altimeter found in the catalog.

Final report for diode-pumped laser altimeter

Final report for diode-pumped laser altimeter

reporting period: 1 June 1990 - 31 March 1993

by

  • 44 Want to read
  • 4 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Lasers.

  • Edition Notes

    StatementD. Welford and Y. Isyanova.
    Series[NASA contractor report] -- NASA-CR-193166., NASA contractor report -- NASA CR-193166.
    ContributionsIsyanova, Y., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18065479M

    analysis of the stability of features and separability in airborne laser swath mapping data by brian james luzum a dissertation presented to the graduate school of the university of florida in partial fulfillment of the requirements for the degree of doctor of philosophy university of florida copyright by brian james luzum to phyllis. Co-Investigator und Science Team Coordinator, BELA (Bepi Colombo Laser Altimeter) Team Co-Investigator for camera, Laser altimeter, and radio VLBI investigations on JUICE (Jupiter Icy Moons Explorer) Co-Investigator, HRC/ExoMars Team 7. Mitwirkung und Organisation von Veranstaltungen Prof. Dr. phil. nat. JÜRGEN OBERST.


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Final report for diode-pumped laser altimeter Download PDF EPUB FB2

Get this from a library. Final report for diode-pumped laser altimeter: reporting period: 1 June March [D Welford; Y Isyanova; United States. National Aeronautics and Space Administration.]. The Mercury Laser Altimeter (MLA) is one of the payload instruments on the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft, which was launched on August 3, MLA maps Mercury’s shape and topographic landforms and File Size: KB.

Lidar (/ ˈ l aɪ d ɑːr /, also LIDAR, LiDAR, and LADAR) is a method for measuring distances by illuminating the target with laser light and measuring the reflection with a sensor. Differences in laser return times and wavelengths can then be used to make digital 3-D representations of the target.

It has terrestrial, airborne, and mobile applications. Final report for diode-pumped laser altimeter [microform]: reporting period: 1 June - 31 March [] Welford, D. [Washington, DC: National Aeronautics and Space Administration ; Springfield, Va.: National Technical Information Service, distributor, ].

The Shuttle Laser Altimeter (SLA) is a Hitchhiker experiment now being integrated for first flight on STS in November Four Shuttle flights of the SLA are planned at a rate of about aFile Size: KB.

laser altimeter, the results of observations of drifting ice, and basic research on a space-borne laser altimeter system. 2 Development of Airborne Laser Altimeter ISHIZU Mitsuo Table 1 Examples of space-borne laser altimeters LD-pumped Q-switched Nd:YAG (Laser Diode Inc.) nm, 10mj, 20pps, multi-mode Transmitting laser Transmitting pulse.

BELA – The Bepi Colombo Laser Altimeter Main Characteristics:. cm lightweight telescope (1kg) with large baffle for thermal protection. Backend optics with 1nm filter /FWHM) and >80% transmission. High sensitive (low noise) APD detector. 50mJ, 3ns diode. dimensional coordinates of the laser spot, given in terms of geodetic latitude, longitude and height above a reference ellipsoid.

The various corrections will be made available on the data record. Mission Overview The Geoscience Laser Altimeter System (GLAS) is an integral part of the NASA Earth Science Enterprise (ESE).

The Geoscience Laser Altimeter System (GLAS) Laser Transmitter, launched inwas an Earth observation LIDAR whose main objective was the study of the Earth ice sheet mass.

The registered history of laser technologies for space application starts with the first laser echoes reflected off the Moon in Since then, photonic technologies have become very prominent in most technical development. Their presence has also dramatically increased in space applications thanks to the many advantages they present over traditional equivalent devices, such as the immunity.

Lunar topographic model CLTM-s01 from Chang’E-1 laser altimeter PING JinSong 1 †, HUANG Qian 1,2 †, Y AN JianGuo 1, CAO JianFeng 3, TANG GeShi 3 & SHU Rong 4. Altimeter resolution of better than 5 m is targeted. The received signal strength of LLRI depends on laser pulse backscatter from the Moon’s surface.

Moon’s surface being a poor reflector, the choice of receiver size and its type and the selection of detector play an important role in. NASA-CR, "The construction of a highly transportable laser ranging station"; Final Report, Nov 2, Solid Earth Science in the s; Coolfont Report.

"Volume 1: Program Plan, NASA-TMVOL-1, February Solid Earth Science in the s; Coolfont Report. Volume 2: Panel Reports, NASA-TMVOL-2, February to Bolded publications signify peer review while the non bolded signify conference.

+ “2-Micron Diode-Pumped Laser Transmitter for SPARCLE: A Coherent Wind Lidar Shuttle Mission“, Final NRL Report #SFA, The laser transmitter is a diode-pumped Nd:YAG oscillator producing nm, 10 ns, 5 mJ pulses at repetition rates up to Hz. LVIS has recently demonstrated its ability to determine topography (including sub-canopy) and vegetation height and structure on flight missions to various forested regions in the US and Central America.

The laser transmits short pulses (4 ns) of infrared light (at nm) and visible green light (at nm). The instrument is a nadir-viewing frequency-doubled, Q-switched, solid-state Nd:YAG laser. Each (of the three identical) lasers is a diode pumped Q-switched, solid-state Nd:YAG laser with energy levels of 75 mJ ( nm) and 35 mJ ( nm).

(DPODP), JPL Tech. ReportThe unit of time on the spacecraft is the MET clock, to which all instrument events are synchronized.

The laser fires occur irregularly a few hundred microseconds after the T0 8-Hz pulse, and trigger pairs of coarse and fine time counters at high and/or low threshold settings. The range accuracy at 50 km was less than 10 m. The LIDAR uses a diode pumped Nd:YAG laser with l2mJ output energy for ranging.

The prototype-model of the LIDAR was developed and it has been testing to prove performance for MUSES-C. The prototype-model of the laser satisfied all of the required specifications for MUSES-C. All the ALBs include diode-pumped lasers of Nd:Yag type and a Q-switch (optical shutter) that transmits at an initial wavelength of 1, nm (infrared or IR) and whose frequency is doubled to a wavelength of nm (green), which provides a better capacity to penetrate the water column.

In order to increase the penetration of the laser beam into the water, high-power ALB systems were first. High-efficiency continuous-wave (CW) Tm:YLF laser by the dual-end-pumping configuration is presented. Under the total input pump power of W, the highest output power reaches W in the wavelength range of nm by use of 10% output coupling, corresponding to optical conversion efficiency of % and slope efficiency of %.

The free-running laser spectrum of Tm:YLF is measured. Airborne topographic mapping LIDARS generally use nm diode pumped YAG lasers, while bathymetric systems generally use nm frequency doubled diode pumped YAG lasers because nm penetrates water with much less attenuation than does nm.

Laser settings include the laser repetition rate (which controls the data collection speed). KEYWORDS: Crystals, Indium, Optical amplifiers, Laser crystals, Gold, Amplifiers, Interfaces, 3D modeling, Laser systems engineering, Thermal modeling Read Abstract + We report on the cause and corrective actions of three amplifier crystal fractures in the space-qualified laser systems used in NASA Goddard Space Flight Center’s (GSFC) Ice.

suppressed in a quasi-CW diode-pumped, passively mode-locked Nd:YAG laser. A stable train of picosecond pulses grouped in µs envelopes has been generated. The repetition rate of the laser system is Hz with mJ energy of the train and µJ single picosecond-pulse energy.

References. A tunable diode laser absorption spectroscopy device was developed to study atmospheric propagation for emerging high-energy laser weapons. The cesium diode-pumped alkali laser operates near nm in the vicinity of several water-vapor absorption lines.

Temperature, pressure, and water vapor concentration were determined for m and 1 km open paths with statistical errors of. With increasing beam power the net gain (gain minus loss) reduces to unity and the gain medium is said to be saturated. In a continuous wave (CW) laser, the balance of pump power against gain saturation and cavity losses produces an equilibrium value of the laser power inside the cavity; this equilibrium determines the operating point of the laser.

The laser light source may comprise a Nd:YAG, diode-pumped, passive Q-Switch laser with a pulse energy of 40 mJ/pulse, a pulse repetition frequency of 30 Hz, and a wavelength of 1, nm (or optionally 1, nm). The complete system may have an. The MOLA consists of a diode pumped, Q-switched Nd:YAG laser transmitter with a pulse energy of mJ.

It can send continuous bursts of 10 pulses/sec, each pulse having a beam diameter of 1 cm and a divergence of mrad. The reciever is a 50 cm parabolic antenna with a Si APD detector and four electronic filters (20, 60,and ns). Full text of "NASA Technical Reports Server (NTRS) LASER Tech Briefs, September Volume 1, No.

1" See other formats. Pulse width 10ns Laser type Nd-YAG Diode Pumped Q switched laser Beam Divergence mrad Telescope receiver area m2 Speed of light × m/s Radius of footprint 50 m Plank constant × J/s To check the accuracy of simulator, the total number of photons reaching the altimeter is computed theoretically using.

KEYWORDS: Optical amplifiers, Oscillators, Q switching, Laser applications, Laser development, Semiconductor lasers, Near field, Gas lasers, Diodes, Pulsed laser operation Read Abstract + A high-energy, dual-pulse, injection seeded pump laser operating at nm is an enabling technology for several airborne and space-based trace gas lidar.

Because the laser head of those flash lamp pumped systems was bigger than those of DPSS solutions, the marking cabins’ size which is conditioned by the dimensions of the laser source were very large and not very handy at that time. Not only were the novel diode pumped Nd:YAG lasers much shorter, but also considerably more power efficient.

ULICE operates at eye-safe conditions from the emission of the optical head. It uses a Centurion laser (a diode-pumped Nd-YAG solid state laser) manufactured by the Quantel company, operating at nm and delivering 7 mJ energy in 6 ns at the pulse repetition frequency (PRF) of 20 Hz.

Full text of "The Second Conference on Lunar Bases and Space Activities of the 21st Century, volume 1" See other formats. The system is integrated with a Sigleuir AES "Profile" eye-safe three-dimensional scanning light detection and ranging (lidar) system using a diode-pumped solid state scanning laser of low beam divergence and nm µm short wave infra-red (SWIR) multi-band laser spot tracker.

This system performs STANAG compliant pulse coded. Airborne topographic mapping lidars generally use nm diode pumped YAG lasers, while bathymetric systems generally use nm frequency doubled diode pumped YAG lasers because nm penetrates water with much less attenuation than does nm.

Laser settings include the laser repetition rate (which controls the data collection speed). DeepDyve is the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. DeepDyve is the easiest way to get instant access to the academic journals you need.

Library of Congress Cataloging-in-Publication Data (Revised for vol. 8) NASA historical data book. (NASA SP- ) Vol. 1 is a republication of NASA historical data book, –/ Jane Van Nimmen and Leonard C.

Bruno. Vol. 8 in series: The NASA historical data book series. Includes bibliographical references and indexes. Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Easily share your publications and get them in front of Issuu’s.

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0 Glossary, Collection of Abbreviations 0 collected & edited by +Roger Wolf, Dd.-Ing., iur., Munich, DE 0 Last edit ; if you can provide your collection write me 0 Software for managing double entries would be interesting Acetylen Atemluft, Luft verdichtet Sauerstoff Diesel Diesel, Dieselkraftstoff Benzin, Otto-Kraftstoff Scheibenklar.

These include laser range-finders and target designators including those based on solid state diode pumped laser technology. InElop was awarded a contract to develop and supply its Laser Obstacle Ranging & Display Systems (LORD) for IAF helicopters, which has successfully completed its advanced multi-functional flight test series.pdf-File.

Download PDF. downloads Innovation and Skills Broadband ISDN Book Industry Study Group Bio Imaging and Signal Proceessing Bio Imaging and Signal Proceessing Technical Committee (in IEEE Signal Processing Society, since ) Binary Digit Bonn–Aachen International Center for Information Technology Because It’s Time Network.The applicability of the above model was illustrated on the example of Nd:YAG laser (16 ns FWHM, nm) induced melting, solidification and evaporation of CdZnTe.

The initial content of zinc in the CdZnTe pseudo-binary was assumed to be 4% in all calculations. The shape of the laser pulse employed in the computations was obtained by.