Dear Georg,
First of all, I'd like to clarify a bit: For now, the proposed localization algorithms do not exploit MPC and cooperation. About cooperation, there is an attempt in the mobility simulation (simulnet) for simulating the sharing of estimated position between nodes, but the localization algorithms are not cooperative themself. By the way, there is also an attempt for implementing a cooperative localization algorithm, but it is still on an un-committed branch.
If you want further information about the method themself, I invite you to refer to these paper references:
for geometric ( RGPA) :
for algebraic :
Thank you for your interest in PyLayers.