All Questions
6
questions
4
votes
2
answers
503
views
What are the reasons for the specific operating wavelengths chosen for laser communication?
I am reading the book: Kaushal, H., Jain, V.K. and Kar, S., 2017, Free space optical communication, New Delhi: Springer India.
The operating wavelengths for beacon and data transmission were discussed....
- 125
0
votes
1
answer
149
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Beacon (PAT) in optical free space communication [closed]
Nanosatellite Optical Downlink Experiment (NODE) mission has 3 "signal":downlink, beacon uplink and RF.
According to a description of the mission, the high-rate downlink and beacon uplink ...
- 267
1
vote
1
answer
248
views
Frequency/Spectrum regulation document for laser communication
For RF we have the frequency allocation table, where the RF spectrum is regulated. Optical has big bandwidth, there is a lot of frequency space.
How do we regulate optical spectrum? I didnt find any ...
- 71
1
vote
1
answer
478
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Receiver and transmitter in RF/optic satellite communication: distance vs data rate v2
The first version of this question is here.
I have read the article "Optical communications work best over relatively short distances in space." by Toyoshima, M., Leeb, W., Kunimori, H. and ...
- 71
9
votes
1
answer
471
views
Why is the Aeolus space laser losing power so quickly?
The BBC News article Aeolus: Wind-mapping space laser is losing power says that
Europe's Aeolus satellite was launched last year to gather data to improve weather forecasts, and its observations have ...
- 149k
40
votes
3
answers
14k
views
Is pinging the Moon with a laser as shown on "The Big Bang Theory" possible?
In an episode of season 3 of The Big Bang Theory, the cast sends a laser pulse to the Moon. This seems to be a real thing: What Neil & Buzz left on the Moon (2004). My questions are:
Could ...
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