Download or read book Atmospheric IR Transmission Measurements in a Tropical Maritime Environment Comparison with the LOWTRAN 6 Model written by and published by . This book was released on 1985 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Broadband IR transmission data measured at a coastal, tropical maritime site have been compared with LOWTRAN 6 model predictions. Transmittance data for a 7 km path plotted as a function of absolute humidity have been examined in six spectral regions from 1.5 to 12 micrometers. A significant discrepancy, which increases with water vapour content, has been found between the measured and predicted data for the 8 to 12 micrometer region. This discrepancy is believed to be due to errors in the laboratory-determined self- broadening coefficients of water continuum absorption. Reasonable agreement has been obtained in the 4.4 to 5.4 micrometer and the 3.5 to 4.0 micrometer regions, particularly for the former region when water continuum absorption is included in the LOWTRAN model.

Download or read book Atmosphere IR Transmission Measurements in a Tropical Maritime Environment Comparison with the LOWTRAN 6 Model written by D. R. Cutten and published by . This book was released on 1985 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Infrared Atmospheric Transmission Emission Measurement in a Maritime Environment written by G. J. Bishop and published by . This book was released on 1987 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper is divided into two parts, the first covering atmospheric measurement trials, the second describing predictions of atmospheric effects on sensor design. In 1985 a programme of collaborative electro-optical research was agreed between ARE (Admiralty Research Establishment) and British Aerospace, co-ordinated by the Naval and Electronic Systems Division at Bristol. The object of this research was to gather trials data on the performance of electro-optical systems in a maritime environment. In order to achieve this objective, it was important to measure the atmospheric transmission/emission close to the sea surface in a variety of weather conditions. During the course of the trial (Fraser Battery October 1985) considerable experience was gained in the operation of various imaging sensors, especially in calibration and measurement techniques. The need to obtain calibration measurements of atmospheric transmission/emission between the electro-optic sensor and any trials target is to be emphasised. This paper describes how these measurements were made and compares the results to those predicted by the Lowtran V atmospheric model. The second part of this paper describes how ozone absorption will affect the design of a passive surveillance system working in the ultraviolet band. (Author).

Download or read book 8th Meeting on Optical Engineering in Israel written by Moshe Oron and published by . This book was released on 1993 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical Infrared and Millimeter Wave Propagation Engineering written by Walter Blaine Miller and published by . This book was released on 1988 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Research Papers written by and published by . This book was released on with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1992-11 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparison of the EMI Long Sea Path Transmittance Measurements with LOWTRAN 5 Calculations written by William O. Gallery and published by . This book was released on 1980 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of broadband visible and infrared transmittance measurements made by EMI Ltd. over a 20 km sea path are compared to transmittances calculated by LOWTRAN 5. The purpose of the comparison is primarily to test the validity of the Maritime aerosol model in LOWTRAN under realistic conditions, and incidentally to test the molecular extinction in several window regions. The results of this comparison are the following: (a) the Maritime aerosol model provides a good description of aerosol extinction for conditions of a moderate wind blowing over the open ocean; (b) the calculated molecular extinction in the 8 to 12 micron region is accurate to within 7 percent in the log of the transmittance, although there is an indication the water vapor continuum absorption coefficient may be slightly too large; (c) the calculated molecular extinction in the 4.5 to 5.0 micron region is seriously underpredicted due to the lack of a water vapor continuum in this region.

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1984 with total page 1246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1984 with total page 1252 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Earth Resources A Continuing Bibliography with Indexes issue 63 written by and published by . This book was released on 1989 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1985 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Digest written by and published by . This book was released on 1992 with total page 1022 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1987 with total page 1260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Australian Government Publications written by National Library of Australia and published by . This book was released on 1987 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Australian Government Publications written by and published by . This book was released on 1987 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: