Upon completion of this Satellite Communications Training Workshop course, the participants will:
Introduction
- Different types of satellite orbits and payloads
- Geostationary Earth Orbit (GEO) system
- Low Earth Orbit (LEO) system
- Medium Earth Orbit (MEO) system
- Major categories of satellite services defined by ITU
- Broadcasting Satellite Service
- Mobile Satellite Service
- Fixed Satellite Service
- Satellite communications systems engineering principals
- Digital Direct-to-Home (DTH) TV
- VSAT services
- 2-way interactive services
- Mobile communications technologies
- Service and performance requirements
Planning and Design (Earth & Planetary)
- Satellite constellations
- Satellite orbits
- Orbital mechanics basics
- Satellite coverage
- Space environment orbit and attitude determination and analysis
- Propulsion system
- Spacecraft operations and automation
- Spacecraft navigation
- Coverage and communication analysis
Satellite Communications Principles
- Terrestrial Systems
- Satellite communication systems
- Satellite communication system architecture
- Satellite access
- Radio link reliability
- Doppler effect
- Satellite constellations
- Spot beams
- Radio Link
- Spectrum issues
- Spectrum sharing methods
- Propagation characteristics
- General propagation characteristics
- Analog and digital Modulation
- Digital modulation and Coding
- Satellite RF Link
- Multiple access principles
- Earth Stations
- Antennas
- Satellite system performance
- Link budget analysis
- System tradeoffs
System Specification and Requirement Writing
- Spacecraft subsystems areas
- Communications payload, Altitude Control, Propulsion, Electrical Power and Distribution, Payload, Thermal, Telemetry, Tracking and Command, and Orbit Control
- Satellite Radio building blocks
- Satellite ground segment
- Earth stations subsystem
- Various types of satellite payloads
- Satellite transponders
- Bent-pipe Satellites
- Key technology advancements in Satellite Communications (SATCOM) payloads for telecommunications services
- Different types of orbits for satellites
- Satellite Communications Training Workshop
- International regulations (ITU-T) governing the frequency planning and coordination of the diverse satellite networks
Requirement analysis of the Satellite Payload
- Capabilities of different repeater components
- Assessment techniques for performance of all major building blocks including repeaters, antenna system, and tracking
- Critical subsystem and system design concepts such as power budget, loss, group delay, IM (Intermodulation) distortion, digital impairments, cross-polarization, adjacent satellite and channel interference for
- Design principles and performance budgets for system elements such as receivers, phased-array antennas, multiplexers, amplifiers, analog and digital processors, reflector, feeds and other passive and active components
- System verification of payload and ground segment performance
- Evaluation of subsystem / system performance, and guidelines for overseeing development
Key Payload Communications Parameters
- Gain and phase variation with frequency
- Phase Noise
- Frequency Stability
- Spurious signals from frequency converter
- Self-interference products
- Passive Intermodulation products
- Noise figure and payload performance budgets
- Engineering specifications and techniques for payload compatibility with the satellite bus
- Communications satellite’s transponder
- Communications channel between the receiving and the transmitting antennas
Transponder System Design and Architecture
- System tradeoffs
- RF tradeoffs (RF power, EIRP, G/T)
- Input band limiting device (a band pass filter)
- Input low-noise amplifier (LNA)
- Frequency translator
- Oscillator and a frequency mixer
- Output band pass filter
- Power amplifier
- Traveling-wave tube
- Solid state amplifiers
- Design elements and specifications for the satellite communications payload
- “Bent pipe” principle
- Bent-pipe repeater subsystem
- Regenerated mode
- Regenerated and bent-pipe mode
- Bent-pipe topology
- On-board processing
- Demodulated, decoded, re-encoded and modulated signals
Communications Payload Performance Management
- Performance and capacity planning
- Payload system Tradeoffs
- Bent-pipe repeater analysis and design
- Antenna Design and Performance
- Link budget
- On-board Digital processor
- A/D and D/A conversion
- DSP (digital signal processing)
- Multiple access technologies
- Principles behind FDMA, TDMA, CDMA
- Demodulation and remodulation
- Multiplexing
- Multi-beam Antennas
- RF Interference
- Spectrum Management
Satellite Communications Training Workshop Wrap-up: Course Recap, Discussion, and Evaluation
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