Subspace transition rebound, also known as a subspace pressure modulation, was a phenomenon associated with use of the inverter, a folded-space transporter used by Ansata terrorists on Rutia IV.
In 2366, the crew of the USS Enterprise -D realized that the rebound could be tracked using an adaptive subspace echogram. Using this method, the Enterprise crew was able to locate the Ansata base. (TNG: "The High Ground")