Subspace scan
A subspace scan was a scan of the several dimensions of subspace.

Subspace scans were part of the routine bridge scans seen on monitors aboard the . (, display graphic)

Wesley Crusher replayed Ferengi transmissions when he supposed a coded signal in one of the subspace scans. ()

When Geordi La Forge's VISOR was somehow malfunctioning, Captain Picard ordered to run a localized subspace scan. ()

Due to Worf's concerns about the different timeline he experienced, Data initiated a subspace scan to search for temporal anomalies on and off the ship. ()

When Captain Jean-Luc Picard traveled through time, he ordered Lieutenant Natasha Yar to perform a subspace scan of the  and its surrounding space. Yar reported no results. ()

In an effort to locate Harry Kim, Captain Kathryn Janeway ordered to probe the subspace vacuoles with a high resolution subspace scan. Later subspace scans were performed with an extended search radius of ten au. ()

See also 
 Sub-space emission scan

Scans
Subspace