Download or read book RADARC HF Ionospheric Prediction Program for OTH Radar written by D. L. Lucas and published by . This book was released on 1993 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: A model for predicting the performance of an over-the-horizon high frequency (HF) radar is described. The program can also be used for management of an existing radar or for HF broadcasting assessment. When the radar parameters, such as power, antenna, and frequency are given the program predicts the signal-to-noise, ground clutter-to-noise, ionospheric spread Doppler clutter-to-noise, and received power as a function of range from the radar site. The report is intended to provide the reader with a general description of the prediction model and to show those mathematics and procedures which are upgraded from NRL Report 2226. The procedures should provide the OTH radar engineers with information to execute the program for studies or evaluation of existing or planned radars. HF Skywave radar performance prediction, Ionospheric models, OTH Radar.
Download or read book HF OTH Radar Performance Results written by J. M. Hudnall and published by . This book was released on 1993 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radar performance forecasts for Navy Relocatable Over-the-Horizon Radars (ROTHR) using computer program RADARC Version 1.0 for Beeville, Texas and Northwest, Virginia are presented. Computer instructions to run RADARC on VMS are given to obtain data files for a location of interest. Instructions on personal computers to generate graphs for noise levels, forecast graphs and tables of availability predictions are provided in details. Over-the-Horizon radar, Radio wave propagation, Computer models of ionosphere. High frequency radar, Radar system modeling.--DTIC.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of RADARC High frequency Radar Performance Prediction Model and ROTHR Amchitka Data written by Benjamin T. Root and published by . This book was released on 1993 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data collected with AN/TPS-71 radar has been used to validate the RADARC model. For the first ten days of January, April, and July, noon and midnight, the vertical ionograms, oblique backscatter soundings, radar ground backscatter amplitudes and noise levels have been compared with Model predictions. The differences between the Model and median ionospheric soundings are small enough to have negligible effect on predictions. The coverage predicted for oblique backscatter soundings agrees well with observed median data except for sporadic E effects which were under-estimated. Medians of observed ground backscatter agree fairly well with predictions. The actual noise that controlled radar performance was the most significant deviation from the model; all nighttime and January day noise was higher than that predicted; and this was due to 'multiplicative' noise ... Ionospheric Models, OTH RADAR, Skywave Transmission.--DTIC.
Download or read book The Effect of the Ionosphere on Communication Navigation and Surveillance Systems written by John M. Goodman and published by . This book was released on 1988 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radio Science written by and published by . This book was released on 1998 with total page 468 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 1994 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Over the horizon Radar written by and published by Artech House Radar Library (Ha. This book was released on 1987 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Information on Over the Horizon Radar Part 16 Ionospheric Disturbance and HF Radar written by and published by . This book was released on 1968 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is shown that backscatter propagation differs from point-to-point propagation insofar as Doppler effects are concerned. Analogously, the dispersive nature of the ionosphere also shows itself differently in the two cases. Certain F-layer disturbances are potentially troublesome to HF radar operations. One of these, which occurred during a 4-hour interval on February 11, 1958, is briefly discussed. The effect of auroral absorption on HF radar is roughly approximated for different operating frequencies and station latitudes.
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Frequency Over the Horizon Radar written by Giuseppe Aureliano Fabrizio and published by McGraw Hill Professional. This book was released on 2013-07-09 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt: THE MOST COMPLETE GUIDE TO HIGH FREQUENCY OVER-THE-HORIZON RADAR Written by a leading global expert on the topic, High Frequency Over-the-Horizon Radar provides in-depth coverage of the signal processing models and techniques that have significantly advanced OTH radar technology. This pioneering work describes the fundamental principles of OTH radar design and operation, and then delves into the mathematical modeling of HF signals received by actual OTH radar systems based on experimental data analysis. Numerous examples illustrate the practical application of modern adaptive signal processing techniques to real and simulated OTH radar data. This authoritative text covers skywave and surface-wave systems and is an invaluable resource for researchers, engineers, and practitioners working with OTH radar systems and technologies.
Download or read book Computer Techniques for Planning and Management of OTH Radars written by and published by . This book was released on 1972 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: Techniques are described for the prediction and analysis of OTH radar operation. A complete ionospheric description is included and optimal computer techniques are utilized to give a practical means to handle the frequency- and antenna-scan management of the radar. Actual data are analyzed to show how the backscatter response from one frequency radar sounding can be used to derive the actual transmission-path characteristics that need to be known for effective radar operation.
Download or read book HF Communications Systems and Technology written by John M. Goodman and published by Springer. This book was released on 1992-05-28 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Communications engineers, ionospheric scientists, engineers and scientists in DoD HF projects, and DoD managers will use this source to gain a working understanding of the basic theory involved in HF radiowave propagation and uses of HF technology today.
Download or read book China written by World Bank and published by World Bank Publications. This book was released on 1993 with total page 1422 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Republic of Korea's industrial policy has directed that nation's economy through nearly three decades of spectacular growth. But the authors of this paper maintain that this policy is showing signs of being outmoded. The time has come, the authors argue, for the Korean government to stop managing the economy's structural development and to redefine the responsibilities of business and government. Under this proposed compact, the allocation of resources would shift from the government to the private industrial and financial sectors. The transformation of the government bureaucracy from an ad hoc policy role to one of a transparent and predictable regulator is a key to the success of this undertaking. These new directions would present the government with enormous challenges. Greater competitive discipline and regulatory oversight would be required. While dealing with the complexities of the transition, the government would have to maintain macroeconomic stability and the momentum of savings and investment. For comparison, the study examines the industrial economies of France, Germany, Japan, and the United States, which underwent similar shifts.
Download or read book Science Abstracts written by and published by . This book was released on 1995 with total page 1990 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Space Physics and Aeronomy Ionosphere Dynamics and Applications written by Chao Huang and published by John Wiley & Sons. This book was released on 2021-05-11 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive review of global ionospheric research from the polar caps to equatorial regions It's more than a century since scientists first identified the ionosphere, the layer of the Earth’s upper atmosphere that is ionized by solar and cosmic radiation. Our understanding of this dynamic part of the near-Earth space environment has greatly advanced in recent years thanks to new observational technologies, improved numerical models, and powerful computing capabilities. Ionosphere Dynamics and Applications provides a comprehensive overview of historic developments, recent advances, and future directions in ionospheric research. Volume highlights include: Behavior of the ionosphere in different regions from the poles to the equator Distinct characteristics of the high-, mid-, and low-latitude ionosphere Observational results from ground- and space-based instruments Ionospheric impacts on radio signals and satellite operations How earthquakes and tsunamis on Earth cause disturbances in the ionosphere The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals. Find out more about the Space Physics and Aeronomy collection in this Q&A with the Editors in Chief
Download or read book Conference Record written by and published by . This book was released on 1983 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
