Download or read book A Nighttime Structure Model of Atmospheric Optical Turbulence C2 n Subscript Derived from Thermosonde and High Resolution Rawinsonde Measurements written by James H. Brown and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Nighttime Structure Model of Atmospheric Optical Turbulence C2 n Subscript Derived from Thermosonde and High Resolution Rawinsonde Measurements written by James H. Brown and published by . This book was released on 1993 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Nighttime Structure Model of Atmospheric Optical Turbulence C2 Sub N Derived from Thermosonde and High Resolution Rawinsonde Measurements written by and published by . This book was released on 1993 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data from fifteen thermosonde flights was used to develop a simple a simple nighttime structure model of C2 sub n. High resolution rawinsondes provide fine scale estimates of atmospheric temperature gradients and variances of wind speed. Non-linear regression applied between the thermosonde and rawinsonde measurements provides the model C2 sub n estimator. This quasi- empirical model is based upon the theoretical description given by Tatarski and upon an exponentially scaled estimate of a theoretical model of the eddy dissipation rate given by Weinstock. A discussion of previous models and a comparison with the Dewan et al. microshear model is presented. Model profiles computed for other sites and seasons are compared favorably to related thermosonde profiles.
Download or read book A Nighttime Structure Model of Atmospheric Optical Turbulence C2n Derived from Thermosonde and High Resolution Rawinsonde Measurements written by James H. Brown and published by . This book was released on 1993 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Design and Development Study to Measure Atmospheric Optical Turbulence written by Robert S. Hills and published by . This book was released on 1982 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes work performed in support of the AFGL program to study atmospheric turbulence and obtain the Atmospheric Optical Structure Constant, C cub N squared. Data is obtained from a thermosonde unit and a radiosonde unit carried aloft by small weather balloons. Improvements in the thermosonde unit and modifications to the radiosonde unit are described. (Author).
Download or read book Optical Turbulence and Rawinsonde Measurements for 17 28 September 1989 at Anderson Mesa United States Naval Observatory Flagstaff Arizona written by Gail M. Tirrell Vaucher and published by . This book was released on 1990* with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Naval Postgraduate School Atmospheric Optics Group acquired atmospheric optical turbulence and navaid radiosonde (rawinsonde) data in the Flagstaff, Arizona region part of a site survey for a large-scale, ground-based, synthetic aperture system (100-300 m baseline stellar interferometer). From 17 to 25 September 1989, measurements were taken from the Lowell Observatory 31- inch telescope dome facility on Anderson Mesa, 16 km southeast of Flagstaff. Further sampling occurred 26-28 September 1989 from the United States Naval Observatory's (USNO) 61-inch telescope dome, approximately 8 km west of Flagstaff. The parameters measured consisted of transverse coherence lengths, isoplanatic angles, and various meteorological surface and upper-air variables measured from a high resolution, instrumented balloon (rawinsonde) system. This report compiles, analyses and summarizes the acquired data. A summary of the synoptic scale activities occurring simultaneously over the data acquisition sites is also presented.
Download or read book The Refractive Index Structure Parameter Atmospheric Optical Turbulence Model CN2 written by Arnold Tunick and published by . This book was released on 1998 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The CN2 model is a semi-empirical algorithm that makes a quantitative assessment of atmospheric optical turbulence. The algorithm uses surface layer gradient assumptions applied to two levels of discrete vertical profile data to calculate the refractive index structure parameter. Model results can be obtained for unstable, stable, and near-neutral atmospheric conditions. The CN2 model has been benchmarked on data from the REBAL'92 field study. The model will shortly be added to the Electro- Optics Atmospheric Effects Library (EOSAEL). This report gives technical and user's guide information on the CN2 model.
Download or read book The Infrared Handbook written by Environmental Research Institute of Michigan. Infrared Information and Analysis Center and published by . This book was released on 1978 with total page 1740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uppdrag kamp med r tt till demokrati written by and published by . This book was released on 2000* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Opto Mechanical Systems Design Volume 2 written by Paul Yoder and published by CRC Press. This book was released on 2017-12-19 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Opto-Mechanical Systems Design, Fourth Edition is different in many ways from its three earlier editions: coauthor Daniel Vukobratovich has brought his broad expertise in materials, opto-mechanical design, analysis of optical instruments, large mirrors, and structures to bear throughout the book; Jan Nijenhuis has contributed a comprehensive new chapter on kinematics and applications of flexures; and several other experts in special aspects of opto-mechanics have contributed portions of other chapters. An expanded feature—a total of 110 worked-out design examples—has been added to several chapters to show how the theory, equations, and analytical methods can be applied by the reader. Finally, the extended text, new illustrations, new tables of data, and new references have warranted publication of this work in the form of two separate but closely entwined volumes. This second volume, Design and Analysis of Large Mirrors and Structures, concentrates on the design and mounting of significantly larger optics and their structures, including a new and important topic: detailed consideration of factors affecting large mirror performance. The book details how to design and fabricate very large single-substrate, segmented, and lightweight mirrors; describes mountings for large mirrors with their optical axes in vertical, horizontal, and variable orientations; indicates how metal and composite mirrors differ from ones made of glass; explains key design aspects of optical instrument structural design; and takes a look at an emerging technology—the evolution and applications of silicon and silicon carbide in mirrors and other types of components for optical applications.
Download or read book Electro Optical Imaging System Performance and Modeling written by Lucien M. Biberman and published by . This book was released on 2001-01-30 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This significant compendium of technical literature traces the development of low-light-level and infrared imaging technologies and system modeling and performance over the past 30 years. It presents an excellent selection of the pioneering work in the U.S. and abroad that forms the theoretical underpinnings of electro-optical imaging. Copublished with ONTAR Corp. Originally published as a hardcover, this is a two-volume softcover version of PM96.
