http://japan.internet.com/webtech/20090821/12.html

地球と月を100Mbps で結ぶ NASA のデータ伝送技術

http://www.nasa.gov/mission_pages/LRO/news/LRO_twta.html

The Ultimate Long Distance Communication

A 13-inch-long tube, called a Traveling Wave Tube Amplifier, is making it possible for scientists to receive massive amounts of images and data from the orbiter at an unusually fast rate. It is the first high data rate K-band transmitter to fly on a NASA spacecraft.

http://en.wikipedia.org/wiki/Traveling-wave_tube

Traveling-wave tube

With this new amplifier, LRO can transmit 461 gigabytes of data per day.

LRO用的高速傳輸技術。

這個距離都能穩定傳100Mbps，那麼衛星上鏈不就還有蠻大的頻寬提昇空間….