The space communication systems are preferable examples to see the cases applying basic subjects such as electromagnetism
and dynamic to the large scale systems with the state-of-the-art communication technologies. In this lecture, basic knowledge
necessary for understanding the principles of work of satellite communication and broadcasting systems, such as celestial
body mechanics, radio wave propagation, communication method are introduced. In addition, the topics of the deep space communications
and the optical communications are included.
To understand the basics of wireless communications in space with learning the fundamentals of space engineering in communication,
measurement and positioning is aimed.
- The fundamentals of space environment around the earth, the outline of satellite communication and broadcasting and the satellite orbits are understood.
- Approaches to estimate the quality of space communications are obtained.
- Structures of satellite systems and ground facilities are comprehended.
- Technical elements for digital communications and storage systems are understood.
- Information of activities and projects for future space communication systems are acquired.
| mini-report 1 | mini-report 2 | mini-report 3 | mini-report 4 | report | Total. | |
|---|---|---|---|---|---|---|
| 1. | 13% | 10% | 23% | |||
| 2. | 12% | 10% | 22% | |||
| 3. | 13% | 10% | 23% | |||
| 4. | 12% | 10% | 22% | |||
| 5. | 10% | 10% | ||||
| Total. | 13% | 12% | 13% | 12% | 50% | - |
If all the mini-reports submitted at the time of class clearly state about the main points of the lesson and the tasks, a
score of 60 is given.
If the report clearly states in accordance with the composition of the introduction, main body, and conclusion about the tasks to be presented during class, a score of 60 is given.
If the report clearly states in accordance with the composition of the introduction, main body, and conclusion about the tasks to be presented during class, a score of 60 is given.
| Class schedule | HW assignments (Including preparation and review of the class.) | Amount of Time Required | |
|---|---|---|---|
| 1. | Outline of space communications １ ・Contents of lecture ・Beginning of telecommunication |
The syllabus should be looked through. | 190minutes |
| 2. | Outline of space communications 2 ・Space environment ・Structure of space communication systems |
Pick up questions about space communications. | 30minutes |
| Find the features of space environments. | 80minutes | ||
| Find communication services using satellites. | 80minutes | ||
| 3. | Outline of space communications ３ ・Space communications and satellite communications ・Features of space communications |
Pick up questions about space communications. | 30minutes |
| Find the definition of the satellite communications. | 80minutes | ||
| Find applications of satellites other than communications. | 80minutes | ||
| 4. | Elements for space communication systems ・Satellite orbits ・Propagation characteristics of radio frequencies |
Pick up questions about space communications. | 30minutes |
| Check the satellite orbit types. | 80minutes | ||
| Confirm the definition of radio waves. | 80minutes | ||
| 5. | Link design 1 ・Antennas ・Free-space propagation loss |
Pick up questions about wireless communications. | 30minutes |
| Review the definitions of the solid angle and the polarization. | 160minutes | ||
| 6. | Link design ２ ・Link budget estimation |
Pick up questions about wireless communications. | 30minutes |
| Review the calculation antenna gain. | 160minutes | ||
| 7. | Satellite and ground facility 1 ・Structure of satellite ・Data relay systems |
Pick up questions about wireless communications. | 30minutes |
| Think of functions necessary for satellites. | 160minutes | ||
| 8. | Satellite and ground facility 2 ・Structure of ground facilities ・Tracking and control systems |
Pick up questions about wireless communications. | 30minutes |
| Find the procedures from the launch of satellites to the operation. | 160minutes | ||
| 9. | Digital satellite communication and broadcasting 1 ・Analogue and digital ・Source coding and channel coding |
Pick up questions about digital communications. | 30minutes |
| Review the pulse code modulation. | 160minutes | ||
| 10. | Digital satellite communication and broadcasting 2 ・Digital modulation |
Pick up questions about digital communications. | 30minutes |
| Examine the probability density function. | 160minutes | ||
| 11. | Sample of space communication systems 1 ・Digital satellite communication systems (1) |
Pick up questions about digital broadcasting. | 30minutes |
| Review the link design. | 160minutes | ||
| 12. | Sample of space communication systems 2 ・Digital satellite communication systems (2) |
Pick up questions about digital broadcasting. | 30minutes |
| Review the modulation schemes | 160minutes | ||
| 13. | Sample of space communication systems 3 ・Space optical communications |
Pick up questions about optical communications. | 30minutes |
| Think of the difference of optical communications from radio frequency communications. | 160minutes | ||
| 14. | Prospective of space communication ・Space explorations ・International discussions |
Pick up questions about space applications. | 100minutes |
| Think of future communications to be developed. | 100minutes | ||
| Total. | - | - | 2670minutes |
| ways of feedback | specific contents about "Other" |
|---|---|
| Feedback in the class |
Understanding of basic mathematics (trigonometric functions, etc.) and Fourier transform is desirable.
- Course that cultivates an ability for utilizing knowledge
| Work experience | Work experience and relevance to the course content if applicable |
|---|---|
| Applicable | With the experiences engaged in the development and demonstration experiments of communication equipment mounted on satellites, points of concerns and way of thinking necessary for the development of the space communication systems are introduced. |
Last modified : Sat Mar 08 04:23:30 JST 2025