Propulsion isn't as bad as it used to be, and there is a real risk >500km with the 10,000 satellites going up...
I would prefer a standardized airbag (or similar) that autodeploys at EoL to increase the surface area, though.
I would prefer a standardized airbag (or similar) that autodeploys at EoL to increase the surface area, though.
Tethers are somewhat better but hard to work with. Propulsion is the best bet at the moment.
One consequence of this ruling could also be in the orbit insertion strategy. Currently agencies are not too worried about your satellite being in working condition in orbit as long as you demonstrate the risk of collision is low enough through natural means. Now that we are likely required to use active deorbiting system (and possibly active collision avoidance), the rules may be more tightened regarding testing and analysis.