Abstract: A system for providing physical state estimation that can include an emitter configured to emit a structured energy emission within a transmission medium. The system can also include a transponder configured to receive the structured energy emission propagated through a transmission medium from the emitter emit the structured energy emission without significant modification of the internal structure of the energy emission. The system can further include an interceptor configured to receive the transponded structured energy emission propagated through a transmission medium from the emitter. The interceptor can also be configured to process the received emissions using spectral compression utilizing a non-linear operation to produce a set of observables suitable for physical state estimation and communicate the set of observables to a physical state estimator. The yet further include a physical state estimator configured to determine member of the relative physical state.