sensing/Data transmission from space
Dataflow Applet and Lesson http://cse.ssl.berkeley.edu/lessons/indiv/dataflow/HomePage.html
From the Extreme Ultraviolet Explorer Mission EUVE).
This dataflow demonstration lesson and accompanying applet show how data from an earth orbiting scientific satellite is transferred to the scientists on the ground. Unlike the RHESSI mission, the EUVE satellite makes use of communications satellites to transfer it's data to ground stations on earth. The RHESSI ground station at UC Berkeley will have its own 30 meter antenna which will communicate directly with the RHESSI satellite.
Images from Space to Earth http://deepspace.jpl.nasa.gov/dsn/tutor/
From NASA's Deep
Space Network (DSN)
This tutorial focuses on image transmission from deep space missions, but much of the information is also applicable to near earth missions like RHESSI.