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Effective design for today's spacecraft
ATI's Satellite RF Communications and Onboard Processing course
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Summary:
Successful systems engineering requires a broad
understanding of the important principles of
modern satellite communications and onboard data
processing. This course covers both theory and
practice, with emphasis on the important system
engineering principles, tradeoffs, and rules of
thumb. The latest technologies are covered,
including those needed for constellations of
satellites.
This course is recommended for engineers and
scientists interested in acquiring an understanding
of satellite communications, command and
telemetry, onboard computing, and tracking. Each
participant will receive a complete set of notes.
Instructors:
Eric Hoffman has degrees in electrical
engineering and over 40 years of spacecraft
experience. He has designed spaceborne
communications and navigation
equipment and performed systems
engineering on many APL
satellites and communications
systems. He has authored over 60
papers and holds 8 patents in these
fields. Mr. Hoffman recently
retired after 19 years as APL
Space Dept Chief Engineer.
Robert C. Moore has worked in the Electronic
Systems Group at APL since 1965. He designs
embedded microprocessor systems for space
applications. Mr. Moore holds four
U.S. patents. He teaches
"Introduction to Computer
Architecture" and the command-telemetry-
processing segment of
"Space Systems" at the Johns
Hopkins University Whiting
School of Engineering.
This course will give you a thorough
understanding of the important principles
and modern technologies behind today’s
satellite communications and onboard
computing systems.
What You Will Learn:
Course Outline:
- RF Signal Transmission. Propagation of radio waves, antenna properties and
types, one-way radar range equation. Peculiarities of the space channel. Special
communications orbits. Modulation of RF carriers.
- Noise and Link Budgets. Sources of noise, effects of noise on communications,
system noise temperature. Signal-to-noise ratio, bit error rate, link margin.
Communications link design example.
- Special Topics. Optical communications, error correcting codes, encryption and
authentication. Low-probability-of-intercept communications. Spread-spectrum
and anti-jam techniques.
- Command Systems. Command receivers, decoders, and processors.
Synchronization words, error detection and correction. Command types,
command validation and authentication, delayed commands. Uploading
software.
- Telemetry Systems. Sensors and signal conditioning, signal selection and data
sampling, analog-to-digital conversion. Frame formatting, commutation, data
storage, data compression. Packetizing. Implementing spacecraft autonomy.
- Data Processor Systems. Central processing units, memory types, mass storage,
input/output techniques. Fault tolerance and redundancy, radiation hardness,
single event upsets, CMOS latch-up. Memory error detection and correction.
Reliability and cross-strapping. Very large scale integration. Choosing between
RISC and CISC.
- Reliable Software Design. Specifying the requirements. Levels of criticality.
Design reviews and code walkthroughs. Fault protection and autonomy. Testing
and IV&V. When is testing finished? Configuration management,
documentation. Rules of thumb for schedule and manpower.
- Spacecraft Tracking. Orbital elements. Tracking by ranging, laser tracking.
Tracking by range rate, tracking by line-of-site observation. Autonomous
satellite navigation.
- Typical Ground Network Operations. Central and remote tracking sites,
equipment complements, command data flow, telemetry data flow. NASA Deep
Space Network, NASA Tracking and Data Relay Satellite System (TDRSS), and
commercial operations.
- Constellations of Satellites. Optical and RF crosslinks. Command and control
issues. Timing and tracking. Iridium as a system example.
Tuition:
Tuition for this three-day course is $1490 per person at one of our scheduled public courses. Onsite pricing is available. Please call us at 410-956-8805 or send an email to ati@ATIcourses.com.
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