Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.


Upload of Basic Principles of Satellite Communications

No description

Dr. Mohamed Ibrahim

on 4 September 2016

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Upload of Basic Principles of Satellite Communications

Research report about any satellite

- Satellite Mission
- Main specifications
- Payload Type and specifications.
- Communication subsystem specifications
- Orbit
- Owner

2-3 Pages Max
Mohamed Ibrahim, Ph.D
Basic Principles of Satellite
Satellite لTechnology
The Origin of Satellites
Communications via Satellite
Satellite Subsystems
Satellite Payload Types
Characteristic Features of Communication Satellites
The first satellite to relay voice signals
The first active communications satellite capable of two-way communications

Thuraya series
The Brick Moon
“Extra-Terrestrial Relays: Can Rocket Stations Give World-wide Radio Coverage?”
Edward Everett Hale
The first artificial satellite
Sputnik 1
Telemetry Tracking & Command (TT&C)
Communication Subsystem
Main Function:
Transmits Telemetry data and receives commands/data from the ground station
Sub Functions:

Receiver RF Signal, Demodulation, Decryption , Extract Command/Data
Transmitter RF Signal, Modulation, Encryption , Collect Telemetry Data
Telemetry Tracking & Command (TT&C)
Communication Subsystem
Main Parameters
Dimantions, Mass, Maximum Power Consumption
Minimum& Max Operating Temperature
Uplink Frequency, Uplink Data Rate, Uplink Bandwidth
Downlink Frequency, Downlink Data Rate, Downlink Bandwidth

Modulation Type, Transmitted Output Power
Antenna Gain, Antenna Feeder Loss, Antenna Ploarization
Operation mode
Security technique
Attitude Determination & Control(ADCS)
Control Subsystem
Main Function:
Uses sensors and actuators to point the Satellite in the right direction
Attitude Determination & Control(ADCS)
Control Subsystem
Command Data Handling (CDH)
Computer Subsystem
Main Function:
Receives, validates, decodes, and distributes commands to other satellite subsystems

Gathers, processes, and formats satellite housekeeping and mission data for downlink .

Command Data Handling (CDH)
Computer Subsystem
Thermal Control Subsystem (TCS)

Main Function:
Maintain all elements within temperature limits for all mission phases
Main Function:

a spacecraft’s key components in desirable locations during mission operations and in their stowed configuration within the launch vehicle’s payload envelope

the spacecraft’s components from the dynamic environments encountered during ground operations, launch, deployment, and mission operations

antennas and sensors during the mission and provide enough stiffness to keep them steady while staying light enough for the selected launch vehicle

Keep vibrations from interfering
with the launch vehicle’s control system or the spacecraft’s own on-orbit control systems
Main Function:
Supply a continuous source of electrical power to satellite loads during the mission life.
Control and distribute electrical power to the satellite subsystems
Support power requirements for average and peak electrical load
Provide converters and telemetry capability for EPS health and status.

Electrical Power Subsystem (EPS)

◦Space Situational Awareness
◦Tailored Communication Systems
◦Space Environmental Monitoring
◦Space Based Augmentation for Navigation
◦Earth Monitoring

Satellite Payload
Full transcript