Download or read book A Proposed Versatile Photon Counter System for Laser Radar written by Gerald T. Wade and published by . This book was released on 1973 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: GE ARRAY OF COUNTERS NORMALLY ASSOCIATED WITH SUCH A SYSTEM AND A MINICOMPUTER TO HANDLE DATA MANIPULATION AND DISPLAY. The speed and versatility make the system a reasonable alternative to systems presently in use. System features include a 250 MHz photon counting rate, 100 nanosecond minimum sample interval, up to 512 channel data accumulation with sub-nanosecond switching times between channels, and a maximum laser transmitter repetition rate of 10 KHz. This system offers several advantages over presently available systems, such as allowing the higher laser repetition rates needed to monitor a rapidly fluctuating atmosphere without sacrificing spatial resolution or the total number of data channels, and enabling real-time modification of the system operating parameters as a function of incoming data. This paper describes the parameters influencing the design of such a system. (Author).

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Book Catalog of the Library and Information Services Division Subject index written by Environmental Science Information Center. Library and Information Services Division and published by . This book was released on 1977 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Air Pollution Abstracts written by and published by . This book was released on 1975 with total page 1182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1974 with total page 1570 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1976 with total page 1466 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Transmittance Models for the 15 micron CO2 Band written by Joseph H. Pierluissi and published by . This book was released on 1975 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general five-parameter band model for molecular absorptance in the infrared is used in the generation of numerous model variations in order to perform a feasibility analysis of band model representation of the 15-micron CO2 band. The accuracy of the models is evaluated by comparisons with the original line-by-line calculated spectra for vertical paths through a standard inhomogeneous atmosphere. The medium inhomogeneity is taken into consideration through the use of the Curtis-Godson relations, including moment variations. Line intensity effects are studied with actual intensity data averaged over 5/cm and with the use of a temperature-dependent factor. It is concluded that a band model representation may provide sufficient accuracy to be of value in meteorological applications only if the number and phenomenological nature of the band parameters are allowed to vary significantly throughout the band.

Download or read book The Effect of Atmospheric CO2 Variations on Satellite sounded Temperatures written by Rufus E. Bruce and published by . This book was released on 1974 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis was made of the Satellite Temperature Sounding Technique to determine the extent of temperature errors arising from possible atmospheric CO2 variations. These possible errors are compared to probable ozone-caused errors and to errors resulting from the radiometer uncertainties.

Download or read book Meteorological and Geoastrophysical Abstracts written by and published by . This book was released on 1974 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Book Catalog of the Library and Information Services Division Shelf List catalog written by Environmental Science Information Center. Library and Information Services Division and published by . This book was released on 1977 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Book catalog of the Library and Information Services Division written by Environmental Science Information Center. Library and Information Services Division and published by . This book was released on 1977 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Current Laser Abstracts written by and published by . This book was released on 1985 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Laser Applications to Atmospheric Sciences written by Franklin S. Harris and published by . This book was released on 1975 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: A bibliography of 1460 references of the applications of lasers to atmospheric sciences. The subjects covered include: aerosols; clouds; the distribution and motion of atmospheric natural and man-made constituents; winds; temperature; turbulence; scintillation; elastic, Raman and resonance scattering; fluorescence; absorption and transmission; the application of the Doppler effect and visibility. Instrumentation, in particular lidar, is included, also data handling, and interpretation of the data for meteorological processes.

Download or read book NASA Contractor Report written by United States. National Aeronautics and Space Administration and published by . This book was released on 1975 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements written by and published by . This book was released on 1973 with total page 1288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Book Catalog of the Library and Information Services Division Author title series indexes written by Environmental Science Information Center. Library and Information Services Division and published by . This book was released on 1977 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tracking System for Photon counting Laser Radar written by Joshua TsuKang Chang and published by . This book was released on 2007 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this thesis is to build the tracking system for a photon-counting laser radar specifically a laser radar that has the ability to perform direct and coherent detection measurement at low signal levels with common laser, optics and detector hardware. The heart of the tracking algorithm is a Kalman filter, and optimal Kalman filter parameters are determined using software simulations. The tracking algorithm was tested against various simulated (software only) and emulated (with actual hardware) trajectories. We also built and tested the real-time tracking system hardware. The algorithms and methods proposed in this thesis achieve the objective of tracking a target at 1,500 km range to within 1-cm accuracy.