Sensor grid
From Memory Alpha, the free Star Trek reference
A sensor grid is a large collection of sensors.
In 2371, the upper sensor grid of Deep Space 9 failed. Chief Miles O'Brien told Benjamin Sisko he would have it operational again by the morning of the next day. (DS9: "The Abandoned")
The Dominion had installed a sensor grid in the Soukara system by 2374. In that year, Worf and Jadzia Dax found that there were three gaps in the grid, all located in an asteroid field. (DS9: "Change of Heart")
