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Telemetering systems and applications have moved far beyond the space flight telemetry most people have heard of to cutting-edge uses across a broad range of disciplines, including industry, medicine, and meteorology. To fully understand and participate in the acquisition of data this technology makes possible, scientists in these fields along with engineers new to telemetering require some background in the concepts, hardware, and software that makes the technology so valuable.
Introduction to PCM Telemetering Systems, Second Edition summarizes the techniques and terminology used in sending data and control information between users and the instruments that collect and process the data. It gives an overall systems introduction to the relevant topics in three primary areas: system interfaces; data transport, timing, and synchronization; and data transmission techniques. The topics addressed include sensor characteristics, user interface design, data filtering, data framing, statistical analysis, telemetry standards, time code standards, modulation techniques, and radio propagation. To reinforce understanding, each chapter includes exercises.
Rather than focusing on design specifics, which can change so rapidly with evolving technologies, the author centers his discussions on concepts and standards. This edition incorporates the latest standards, LabVIEW-based examples of telemetry and command processing, and simulations using multiSim and Commsim.
Introduction to PCM Telemetering Systems, Third Edition summarizes
the techniques and terminology used in sending data and control
information between users and the instruments that collect and
process the data. Fully revised, it gives an overall systems
introduction to the relevant topics in three primary areas: system
interfaces; data transport, timing, and synchronization; and data
transmission techniques. Integrating relevant information about the
process at all levels from the user interface down to the
transmission channel, this will also include how designers apply
relevant industry and government standards at each level in this
process. Homework problems are included at the end of each chapter.
Introduction to PCM Telemetering Systems, Third Edition summarizes
the techniques and terminology used in sending data and control
information between users and the instruments that collect and
process the data. Fully revised, it gives an overall systems
introduction to the relevant topics in three primary areas: system
interfaces; data transport, timing, and synchronization; and data
transmission techniques. Integrating relevant information about the
process at all levels from the user interface down to the
transmission channel, this will also include how designers apply
relevant industry and government standards at each level in this
process. Homework problems are included at the end of each chapter.
Three Corner Satellite is a constellation of three nanosatellites
designed and built by students. New Mexico State University has
taken on the design of the communications system for this
constellation. The system includes the forward link, return link,
and the crosslink. Due to size, mass, power, and financial
constraints, we must design a small, light, power efficient, and
inexpensive communications system. This thesis presents the design
of a radio system to accomplish the data transmission requirements
in light of the system constraints. In addition to the hardware
design, the operational commands needed by the satellite's on-board
computer to control and communicate with the communications
hardware will be presented. In order for the hardware to
communicate with the ground stations, we will examine the link
budgets derived from the radiated power of the transmitters, link
distance, data modulation, and data rate for each link. The antenna
design for the constellation is analyzed using software and testing
the physical antennas on a model satellite. After the analysis and
testing, a combination of different systems will meet and exceed
the requirements and constraints of the Three Corner Satellite
constellation.
The performance of Transmission Control Protocol (TCP) in space has
been examined from the observations of simulation and experimental
tests for several years at National Aeronautics and Space
Administration (NASA), Department of Defense (DoD) and
universities. At New Mexico State University (NMSU), we have been
concentrating on studying the performance of two protocol suites:
the file transfer protocol (ftp) running over Transmission Control
Protocol/Internet Protocol (TCP/IP) stack and the file protocol
(fp) running over the Space Communications Protocol Standards
(SCPS)-Transport Protocol (TP) developed under the Consultative
Committee for Space Data Systems (CCSDS) standards process. SCPS-TP
is considered to be TCP's extensions for space communications. This
dissertation experimentally studies the behavior of TCP and SCPS-TP
by running the protocol suites over both the Space-to-Ground Link
Simulator (SGLS) test-bed and realistic satellite link. The study
concentrates on comparing protocol behavior by plotting the
averaged file transfer times for different experimental
configurations and analyzing them using Statistical Analysis System
(SAS) based procedures. The effects of different link delays and
various Bit-Error-Rates (BERS) on each protocol performance are
also studied and linear regression models are built for experiments
over SGLS test-bed to reflect the relationships between the file
transfer time and various transmission conditions.
Benjamin Graham referred to it as his “margin of safety.” Seth
Klarman favors it over all other investment methods. Warren Buffett
uses it to make millions for his investors. It’s called value
investing, and you can make it work wonders for your portfolio. All
you need is money to invest, a little patience—and this book.
Strategic Value Investing reveals everything you need to know to
build a world-class portfolio using value investing as your north
star. Written by experts on valuation and financial analysis, this
comprehensive guide breaks it all down into an easy-to-implement
process. The authors explain the ins and outs of determining when a
stock is undervalued, then purchasing it and selling it for a
profit when the rest of the world learns what you knew all along.
With Strategic Value Investing, you’ll learn how to: Distinguish
between the various measures of value, including going concern,
replacement value, fair market value, book value, and intrinsic
value Identify undervalued companies before everyone else, and know
what to look for, what to avoid, when to buy, and when to sell The
authors teach you how to establish a dispassionate value investing
philosophy tailored to your needs. Equally important, they provide
the tools you need to adhere to this often contrarian approach
regardless of your emotions or crowd sentiment. Get in before the
crowd—and get out when the price is right with Strategic Value
Investing. Praise for Strategic Value Investing “A book that has
much the same character as a good value investor: calm,
disciplined, with a grasp both of broad theory and of how to apply
it.” —JOHN AUTHERS, senior investment columnist, Financial
Times “This comprehensive look at valuation techniques is not
only insightful, but can be easily put to use by individual and
professional investors alike.” —CHARLES ROTBLUT, CFA, Vice
President, the American Association of Individual Investors
“Offers a sound fundamental perspective for those looking to
deepen their analysis around stocks. A great resource for all types
of value investors.” —HEATHER BRILLIANT, CFA, global head of
equity research at Morningstar and member of the CFA Institute
Board of Governors “This book is of Real Value! It updates the
pioneering work of Ben Graham and Phillip Fisher, blending the
valuation techniques of the masters (such as Warren Buffett) and
provides institutional and individual investors the A to Z of value
investing from a practitioner perspective.” —JOHN MAGINN, CFA,
EVP & CIO, Mutual of Omaha (retired) and coeditor of Managing
Investment Portfolios “An actionable road map for implementing a
disciplined value investing strategy. Very much in the Ben Graham
style. The sophisticated individual investor will find this
comprehensive digest a continual and timeless reference.”
—WALLACE FORBES, CFA, President of Forbes Investors Advisory
Institute, Division of Forbes magazine “Many books propose to
help you learn how to become a better value investor. This one,
which is bound to become a staple of every value investor’s
library, delivers on its promise.” —ROBERT POWELL, editor of
Retirement Weekly and columnist of “MarketWatch”
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