ＭＨＩ: Optical data relay satellite launch: Laser Communication System
Mitsubishi Heavy Industries:
On November 29, it announced that it would launch an “optical data relay satellite” from the Tanegashima Space Center in Kagoshima Prefecture.
The H2A rocket No. 43 is equipped with an “optical data relay satellite” that handles communication between artificial satellites.
High-speed communication technology between satellites:
We will demonstrate “high-speed communication technology between satellites developed by JAXA” with “optical data relay satellites”.
Orbit a geosynchronous orbit,
Data from earth observation satellites located at altitudes of several hundred kilometers
Receive by high-speed communication using laser light and transfer to the ground station.
Optical data relay satellite:
It is put into geosynchronous orbit and relayed by “high-speed communication using laser light” for observation data of earth observation satellites. Transfer to the ground station.
Conventional problems:
An observation satellite that orbits the earth in about 90 minutes.
The time to send data to the ground station is limited to about 10 minutes per lap.
This solution:
Use of relay satellites:
If you use a relay satellite that is always over Japan, you can increase the transmission time by about four times.
Laser optical communication:
By using laser light, communication is possible with an antenna that is faster and smaller than radio waves.
Current affairs dot com
https://www.jiji.com/jc/article?k=2020112700804&g=soc
H2A rocket No. 43 launched on the 29th
Tanegashima Space Center |
Cabinet Satellite Information Center:
Information-gathering satellites currently in operation can send data only when they pass over ground stations.
By using a relay satellite in geosynchronous orbit, the time zone during which transmission can be performed is significantly extended.
The development cost is 15.8 billion yen.
JAXA’s optical communication technology:
The data relay satellites will be carpooled by satellites that exchange data using JAXA’s optical communication, and will challenge technology demonstration.
LUCAS:
Data from observation satellites orbiting the earth are captured by laser light.
“LUCAS”, a system that uses radio waves to deliver to the ground
Aim for high-speed and large-capacity communication.
The total development cost including ground equipment is 26.5 billion yen.
Kagoshima News | South Japan Newspaper |
373news.com
https://373news.com/_news/?storyid=129189
Mitsubishi Heavy Industries | H-IIA Launch Vehicle No. 43, Data Relay Satellite No. 1, Optical Data Relay Satellite Launch
About time and launch time zone
Mitsubishi Heavy Industries, Ltd. has decided to launch the H-IIA rocket No. 43 (H-IIA / F43) equipped with the data relay satellite No. 1 and the optical data relay satellite as follows (* 1). I will.
(* 1) Mitsubishi Heavy Industries, Ltd. will execute the launch conducted by the Cabinet Satellite Information Center.
Date of launch: Sunday, November 29, 2020
Launch time: 16:25 (Japan Standard Time)
Launch time: 16: 25-17: 49 (Japan Standard Time)
Preliminary launch period: November 30, 2020 (Monday) -January 31, 2021 (Sunday)
https://www.mhi.com/jp/notice/notice_201127.html
Optical Satellite Communication System (LUCAS) | Artificial Satellite Project | JAXA First Space Technology Division Satellite Navigator