Download or read book Meteor Burst Communications MBC Throughput Improvement Tests written by and published by . This book was released on 1993 with total page 70 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 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Meteor Burst Communications written by Donald L. Schilling and published by Wiley-Interscience. This book was released on 1993-04-12 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores the meteor burst channel. Leading experts in the communications field cover the research, military and commercial applications of this subject. Following an introduction to the technology, early chapters describe this channel, the theory and modeling techniques used to simulate it and the use of variable data rate transmission for efficient communication. Later chapters present a method for implementing such a system using FM techniques, compare experimental results with theory, offer additional theoretical results obtained for the variable data rate techniques and discuss the improvement obtained through the use of forward error correction coding.

Download or read book Experimental Investigation of Meteor Burst Footprints written by M. Rich and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Meteor Burst Communications (MBC) provides reliable, beyond-line-of-sight data communications, but some serious throughput limitations are associated with the technology. One limitation is the finite waiting time required to send a message. This waiting time can be reduced by increasing the excess link margin, but this increases the cost and complexity of an MBC system. However, because of the limited footprint of a meteor trail, the waiting time for a system of networked stations can be reduced by spreading the stations over multiple footprints. For example, an array with station spacings of 50 km demonstrated less than one-tenth the waiting time of a single link. SRI International of Menlo Park, California, designed and operated an MBC array in the north central United States to study meteor burst spatial diversity. This paper describes the effects of spatial diversity on link throughput and describes preliminary observations of signal footprint size and shape.

Download or read book Network Analysis of Meteor Burst Communication MBC written by Osama A. Meselhi and published by . This book was released on 1992 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Meteor Burst Communications Improvement Study written by and published by . This book was released on 1993 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two identical Meteor Burst Radio Terminals were developed, fabricated and delivered to the Air Force. Each is controlled by a PC computer in a memo driven manner. Mode of operation is full duplex. The RF frequency range is 40 to 60 MHz with tunning increments of 25 KHz. Data rates are 4, 8, 16, 32, 64, 128, 256, and 512 kbps. Modulation is coherent Binary Phase Shift Keying (BPSK) and incoherent Differential Phase Shift Keying (DPSK). Protocol includes Automatic Repeat Request (ARQ) with source and destination addressing, message number, start of message and end of message. Messages are packetized and Read Solomon (R-S) coding is an option. The ARQ is under control of a Cyclic Redundancy Check Code (CRCC) which detects binary errors within each packet. The terminal is intended to increase meteor trail availability and data throughput by several orders of magnitude - by operating with new antennas that provide much higher gains without sacrificing meteor trail acquisition performance.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Signal written by and published by . This book was released on 1986 with total page 1172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The NBS Meteor burst Propagation Project written by Charles E. Hornback and published by . This book was released on 1960 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Airborne Tests of Meteor burst Communications written by I. Roth and published by . This book was released on 1958 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book COMSIG 92 written by and published by IEEE. This book was released on 1992 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrical Electronics Abstracts written by and published by . This book was released on 1997 with total page 1948 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Military Communications written by Christopher H. Sterling and published by Bloomsbury Publishing USA. This book was released on 2007-10-16 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: An alphabetically organized encyclopedia that provides both a history of military communications and an assessment of current methods and applications. Military Communications: From Ancient Times to the 21st Century is the first comprehensive reference work on the applications of communications technology to military tactics and strategy—a field that is just now coming into its own as a focus of historical study. Ranging from ancient times to the war in Iraq, it offers over 300 alphabetically organized entries covering many methods and modes of transmitting communication through the centuries, as well as key personalities, organizations, strategic applications, and more. Military Communications includes examples from armed forces around the world, with a focus on the United States, where many of the most dramatic advances in communications technology and techniques were realized. A number of entries focus on specific battles where communications superiority helped turn the tide, including Tsushima (1905), Tannenberg and the Marne (both 1914), Jutland (1916), and Midway (1942). The book also addresses a range of related topics such as codebreaking, propaganda, and the development of civilian telecommunications.

Download or read book Cities and Their Vital Systems written by Advisory Committee on Technology and Society and published by National Academies Press. This book was released on 1989 with total page 1298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cities and Their Vital Systems asks basic questions about the longevity, utility, and nature of urban infrastructures; analyzes how they grow, interact, and change; and asks how, when, and at what cost they should be replaced. Among the topics discussed are problems arising from increasing air travel and airport congestion; the adequacy of water supplies and waste treatment; the impact of new technologies on construction; urban real estate values; and the field of "telematics," the combination of computers and telecommunications that makes money machines and national newspapers possible.

Download or read book Annual Department of Defense Bibliography of Logistics Studies and Related Documents written by United States. Defense Logistics Studies Information Exchange and published by . This book was released on 1993 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MILCOM88 written by and published by . This book was released on 1988 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Communications fusing Command Control and Intelligence written by and published by . This book was released on 1992 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: