The magazine "Physics Today" had an article in July about a constellation of earth-observation satellites, informally dubbed the A-Train. Many orbinauts will find it interesting (it's not too technical). The satellites are all at 705 km altitude, inclination 98.2 degrees, and within just a few minutes of each other.
What I found interesting was this: "Launched in 2006, CloudSat and CALIPSO were placed in a tight formation, with a separation of 12.5 s or 93.8 km. The satellites are so close that CloudSat must make regular orbit maneuvers to compensate for the different atmospheric drag it experiences"
Sounds like a very high-precision operation to keep them all coordinated.
What I found interesting was this: "Launched in 2006, CloudSat and CALIPSO were placed in a tight formation, with a separation of 12.5 s or 93.8 km. The satellites are so close that CloudSat must make regular orbit maneuvers to compensate for the different atmospheric drag it experiences"
Sounds like a very high-precision operation to keep them all coordinated.