Multiple signals from different views are coordinated in order
to uniquely locate it. Examples include signal triangulation to locate ships
on Earth (a near-plane), quadrangulation used in the global positioning
system (GPS) to locate a point in 3-space (plus time), and the use of
multiple audit trails in a network infrastructure to locate the source of a
signal or malicious bit-stream.
Complexity: While Euclidean spatial location is fairly straight forward,
additional mapping capability is required in order to use this technique in
cyber-space, and the number of observation points and complexity of location
has not been definitively published. This would appear to be closely
related to mathematical results on finding cuts that partition a network.