UNMANNED SPACE CONCEPTS
Spacecraft fleets
Space Swarm
Space Swarm is a concept for multiple spacecraft used as a low cost, multiple redundancy approach to space missions, where instead of a single large spacecraft, a number of small, single sensor spacecraft are used to conduct a mission.
The concept fits in neatly with the general work I have been pursuing on Picosats, where their small size, and low cost, lend themselves to this type of mission.