- "Comparison of Video Compression Standards in a TSPI
Application"
Michail Stolhand, JT3 UTTR/Hill AFB, D. Shane Woolridge, 2004
- "Convolutional Encoding, Terminology"
Ed Snyder, 2003
- "Protocol Layering"
David L. Grebe, 2002
- "Recorders in Networked Data Acquisition Systems"
David L. Grebe, 2002
- "Test Range Data & Communication Networks:
Packetized Telemetry Techniques Bridge the Gap"
David L. Grebe, 2002
- "Combining GPS and Packetized Telemetry Concepts to
Form a Wide Area Data Multiplex System"
David L. Grebe, 1999
- "Packetized Telemetry Increases Feedback System
Response Time in a High Energy Physics Application"
D. Shane Woolridge, 1999
- "The Use of Packetized Telemetry in Inverse T1
Multiplexing"
Jason Urban, 1999
- "Multiplexer/Demultiplexer Implementation using a
CCSDS Format"
David L. Grebe, 1997
by Michail Stolhand and D. Shane Woolridge
The need to compress video for the purpose of transport and recording plays a
large part in most telemetry applications. Throughput latency requirements,
bandwidth limitations, quality, and full motion characteristics are all
considerations when deciding on which compression algorithm to use. Another
deciding factor is the environment in (or conditions under) which the video
will be used when decompressed. This paper will evaluate three standard
types of video compression, MPEG2, MPEG2 using I-frame only, and MJPEG.
These compression techniques will be compared to a legacy Wide Band
System (ALS) for TSPI (Time-Space-Position-Information) error analysis
and subjective quality assessment.
by Ed Snyder
Convolutional codes have been in use since the early days of the 1950s. While
the implementation of convolutional encoding systems is relatively simple, the
process of decoding the resultant data stream at the receiving node can be
quite complex. This paper will provide an expanation for a basic
understanding about how convolutional coders are described and how the
encoding is accomplished.
by David L. Grebe
The advent of COTS based network-centric data systems brings a whole new
vocabulary into the realm of instrumentation. The Communications and computer
industries have developed networks to a high level and they continue to
evolve. One of the basic techniques that has proven itself useful with the
technology is the use of a "layered architecture". This paper is
an attempt to discuss the basic ideas behind this concept and to give some
understanding of the vocabulary that has grown up with it.
Published with permission by IFT, Copyright ©International Foundation
for Telemetering, 1997
by David L. Grebe
This paper explores the trend to adopt network based data acquisition,
collection and distribution systems for telemetry applications and the impact
on recording technizques and equipment. It shows that in this emerging
approach, the recorder returns to its' root mission of attempting to provide
the fastest, largest capacity fo rthe least amount of investment. In a
network based architecture the recorder need only accept data and reproduce
data and operates independently form the acquisition process.
Published with permission by IFT, Copyright ©International Foundation
for Telemetering, 2002
by David L. Grebe
This paper presents techniques that may be used to connect Telemetry Data
Acquisition Sites with remote Data Reduction and Data Analysis sites in real
time using a variety of available Data Communication Networks.
Published with permission by the German Society of Telemetering on behalf of European Telemetry Conference
by David L. Grebe
This paper addresses the problem of collecting telemetry and other test range
information from mulitple tracking sites and providing the ability to
disseminate this data to multiple reduction and control centers without the
need to implement a zero based solution.
Published with permission by IFT, Copyright ©International Foundation
for Telemetering, 1999
by D. Shane Woolridge
A digital feedback system used to monitor and control a high energy electron
beam's orbit and stability in a VUV and X-ray storage ring will realize a 10
fold increase in the feedback system response time using packetized
(IRIG 107-98) telemetry. The improvement in feedback time will provide a
significant improvement in the level of orbit stability.
This paper discusses the advantages of using a packetizing standard &
high speed data acquisition as a cost effective way to support the scientific
community in their real time processing needs.
Published with permission by IFT, Copyright ©International Foundation for Telemetering, 1999
by Jason Urban
The use of an inverse T1 multiplexer allows the site to utilize multiple T1
lines rather than more costly higher bandwidth lines. This paper will discuss
the combination of packets and ivners multiplexing to achieve an expandable
transmission system capable of delivering a high bandwidth data stream across
multiple T1 lines.
Published with permission by IFT, Copyright ©International Foundation for Telemetering, 1999
by David L. Grebe
A Mux/demux design suitable to a wide range of input data types and link
formats is presented. Based on CCSDS recommendations for Packet Telemetry, the
design translates the prescribed layered architecture into a modular, layered
hardware implementation. This implementation can be aplied to flight data
acquisition (direct transmission to the ground or recorded), ground data
collection and inter-range communications.
Published with permission by IFT, Copyright ©International Foundation for Telemetering, 1997
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"Comparison of Video
Compression Standards in a TSPI Application"