Download or read book Analysis of Sweep Frequency Oblique Polar Region High Frequency Radio Propagation Measurements written by Alfred E. Reilly and published by . This book was released on 1977 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Chapman-Davies-Littlewood technique for the computation of the equivalent path of an ionospherically propagated High Frequency (HF) radio signal was used to determine the most probable modes of oblique propagation and the corresponding frequency windows that existed during six experimental aircraft flights in the polar region. In comparison to these results, the Elkins-Rush HF Polar Predictive Model has been found to be inadequate for short-term propagation predictions. These oblique propagation measurements have verified Feldstein and Starkov's conclusion that the magnetic Index Q is a good indicator of the position, shape, and size of the Instantaneous Auroral Oval as they have defined it on the basis of ground-based optical measurements which they subjected to statistical analyses. An approach has been developed which sheds new light on the behavior of HF signals propagating via the polar ionosphere. On the basis of the results achieved using this approach, it is recommended that an attempt be made to develop a new method of predicting short-term polar region HF propagation conditions well in advance (that is, an hour or more in advance in real time). A hypothetical example of an application of such a method is given. Action should be taken soon to exploit this possibility. Additional work could extend the applicability of this approach beyond anything that has seemed feasible before. New understanding of the physics of the polar ionosphere could result. It is hoped that this report will stimulate the experimental and theoretical research that will result in this increased understanding of the polar ionosphere. (Author).

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1978 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.

Download or read book Environmental Research Papers written by and published by . This book was released on 1977 with total page 108 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 1978-07 with total page 1352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Research written by United States. National Bureau of Standards and published by . This book was released on 1960 with total page 914 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Research of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1960 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dimensions written by and published by . This book was released on 1958 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Meteorological and Geoastrophysical Abstracts written by and published by . This book was released on 1977 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Geomagnetic Index Q Its Persistence Predictability and Other Pertinent Properties written by Alfred E. Reilly and published by . This book was released on 1978 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical News Bulletin written by and published by . This book was released on 1959 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical News Bulletin of the National Bureau of Standards written by and published by . This book was released on 1959 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical News Bulletin written by United States. National Bureau of Standards and published by . This book was released on 1958 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solar terrestrial Predictions Proceedings Working group reports and reviews written by Richard Frank Donnelly and published by . This book was released on 1979 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solar terrestrial Predictions Proceedings written by Richard Frank Donnelly and published by . This book was released on 1979 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Working group reports and reviews written by Richard Frank Donnelly and published by . This book was released on 1979 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt: