A gravimetric sensor is a scanning array used for locating wormholes.

For the 1^st Annual Voyager Science Fair aboard the USS Voyager 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. (VOY: "Child's Play")

Gravimetrics
distortion • disturbance • eddy • energy • field • fluctuation • flux density • force • gradient • interference • microprobe -• radiation • scanner • sensor • shear • torpedo • wave