Gravimetric sensor
A gravimetric sensor was a scanning array used for locating wormholes.

For the 1st Annual Voyager Science Fair aboard the  in 2376, Icheb created a high-resolution gravimetric sensor array to scan for the neutrino flux associated with wormholes. He hoped the technology would allow Voyager to find a faster way home. ()

de: Gravimetrischer Sensor
Sensor technology