Download or read book Maritime Communication Experiments and Search and Rescue Evaluations with the NASA ATS 6 Satellite Volume II Text and Appendix written by P. D. Engels and published by . This book was released on 1978 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of maritime satellite communication experiments were: to acquire a base of satellite technology knowledge applicable to ship-satellite-shore system design; and to demonstrate, by means of coordination among several ships, aircraft, and ground/shore control centers, some operational uses of satellites for ATC and SAR applications. A description of the ATS-6 experiments is presented along with the technical characteristics of the shipboard terminals used in the experiments. The tests conducted in this program provide a large and homogeneous data base, over a variety of elevation angles, sea states, multipath conditions, and signal levels. The writers believe that the data presented in this report provide a suitable base to recommend performance standards for a satellite-relay Coast Guard Communications System. The recommended system would be a combined voice, data, and ranging system, which would initially rely primarily on voice communications, with gradual increases in the use of digital data links. Ranging would provide two dimensonal position location (assuming the availability of at least two satellites).
Download or read book Maritime Communication Experiments and Search and rescue Evaluations with the NASA ATS 6 Satellite Text and appendix written by and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Maritime Communication Experiments and Search and Rescue Evaluations with the NASA ATS 6 Satellite written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transportation Systems Center Bibliography of Technical Reports January December 1978 written by J. A. Bilsback (ed) and published by . This book was released on 1979 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Maritime Communication Experiments and Search and rescue Evaluations with the NASA ATS 6 Satellite written by Transportation Systems Center and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Maritime Communication Experiments and Search and Rescue Evaluations with the NASA ATS 6 Satellite Volume I Summary written by P. D. Engels and published by . This book was released on 1978 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maritime satellite communication experiments were conducted by this Center using the NASA Applications Technology Satellite-Number 6 (ATS-6) from September 1974 through April 1975. The objectives were: to acquire a base of satellite technology knowledge applicable to ship-satellite-shore system design; and to demonstrate, by means of coordination among several ships, aircraft, and ground/shore control centers, some operational uses of satellites for ATC and SAR applications. Volume I provides a brief description of the ATS-6 experiments along with a description of the shipboard terminal equipment used in the experiments. The ATS-6 satellite maritime technology experiments have produced data which will be used in preparing specifications of ship terminals for possible future operational satellite systems. Evaluations were made of a shipboard antenna design, various types of voice, data, and ranging modulations, and the effects of multipath reflections off the sea and the ship superstructure. The safety demonstration experiments are expected to aid in evaluating the effectiveness of satellite communications in maritime safety-of-life-at-sea applications. In these tests, the satellite-to-ship link was used in a typical search and rescue incident along with the Emergency Position Indicating Radio Beacon Buoy which initiated the distress alert.
Download or read book Maritime Communication Experiments and Search and rescue Evaluations with the NASA ATS 6 Satellite Summary written by and published by . This book was released on 1978 with total page 0 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 1977 with total page 1262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book SRIM Index written by and published by . This book was released on 1978 with total page 386 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 199? with total page 1602 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Safety Science Abstracts Journal written by and published by . This book was released on 1979 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Traffic Control Experimentation and Evaluation with the NASA ATS 6 Satellite Volume I Executive Summary written by Sejfi Protopapa and published by . This book was released on 1977 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Department of Transportation (DOT), Federal Aviation Administration (FAA) program for air traffic control (ATC) experimentation and evaluation with the ATS-6 satellite was part of the Integrated ATS-6 L-Band Experiment. All tests were performed between September 1974 and April 1975. The U.S. DOT aeronautical program consisted of both ATC communications demonstration and technology tests. In support of the aeronautical satellite (AEROSAT) program, tests were designed to collect satellite-aircraft signal propagation data, evaluate L-band avionics hardware designs, and perform preliminary satellite voice and data communications demonstration tests.
Download or read book IAMSAR Manual written by International Maritime Organization and published by . This book was released on 2002 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Traffic Control Experimentation and Evaluation with the NASA ATS 6 Satellite Volume IV Data Reduction and Analysis Software written by A. D. Thompson and published by . This book was released on 1976 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Software used for the reduction and analysis of the multipath prober, modem evaluation (voice, digital data, and ranging), and antenna evaluation data acquired during the ATS-6 field test program is described. Multipath algorithms include reformatting operations, delay-spectra time histories, delay-Doppler scatter function S(Tau, Omega), noise determination and removal, spread calculations, airborne tape analysis, and other detailed processing including time-domain analysis and various integral and Fourier operations on S(Tau, Omega). Modem and antenna evaluation data processing software includes algorithms for the determination of (1) C/N sub o and multipath interference ratio, S/I, (2) digital data bit-error rates, block error statistics, and inter-error spacing, and (3) ranging error statistics and distribution. Sample outputs are given. Program listings and other information are provided in an auxiliary software data package. The report consists of seven volumes: I - Executive Summary; II - Demonstration of Satellite-Supported Communications and Surveillance for Oceanic Air Traffic Control; III - Summary of U.S. Aeronautical Technology Test Program; IV - Data Reduction and Analysis Software; V - Multipath Channel Characterization Test; VI - Modem Evaluation Test; VII - Aircraft Antenna Evaluation Test. (Author).
Download or read book Air Traffic Control Experimentation and Evaluation with the NASA ATS 6 Satellite Executive summary written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Read You Loud and Clear written by Sunny Tsiao and published by . This book was released on 2015-02-15 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book The Arctic in the Anthropocene written by National Research Council and published by National Academies Press. This book was released on 2014-07-31 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Once ice-bound, difficult to access, and largely ignored by the rest of the world, the Arctic is now front and center in the midst of many important questions facing the world today. Our daily weather, what we eat, and coastal flooding are all interconnected with the future of the Arctic. The year 2012 was an astounding year for Arctic change. The summer sea ice volume smashed previous records, losing approximately 75 percent of its value since 1980 and half of its areal coverage. Multiple records were also broken when 97 percent of Greenland's surface experienced melt conditions in 2012, the largest melt extent in the satellite era. Receding ice caps in Arctic Canada are now exposing land surfaces that have been continuously ice covered for more than 40,000 years. What happens in the Arctic has far-reaching implications around the world. Loss of snow and ice exacerbates climate change and is the largest contributor to expected global sea level rise during the next century. Ten percent of the world's fish catches comes from Arctic and sub-Arctic waters. The U.S. Geological Survey estimated that up to 13 percent of the world's remaining oil reserves are in the Arctic. The geologic history of the Arctic may hold vital clues about massive volcanic eruptions and the consequent release of massive amount of coal fly ash that is thought to have caused mass extinctions in the distant past. How will these changes affect the rest of Earth? What research should we invest in to best understand this previously hidden land, manage impacts of change on Arctic communities, and cooperate with researchers from other nations? The Arctic in the Anthropocene reviews research questions previously identified by Arctic researchers, and then highlights the new questions that have emerged in the wake of and expectation of further rapid Arctic change, as well as new capabilities to address them. This report is meant to guide future directions in U.S. Arctic research so that research is targeted on critical scientific and societal questions and conducted as effectively as possible. The Arctic in the Anthropocene identifies both a disciplinary and a cross-cutting research strategy for the next 10 to 20 years, and evaluates infrastructure needs and collaboration opportunities. The climate, biology, and society in the Arctic are changing in rapid, complex, and interactive ways. Understanding the Arctic system has never been more critical; thus, Arctic research has never been more important. This report will be a resource for institutions, funders, policy makers, and students. Written in an engaging style, The Arctic in the Anthropocene paints a picture of one of the last unknown places on this planet, and communicates the excitement and importance of the discoveries and challenges that lie ahead.
