Long range sensor scan
From Memory Alpha, the free Star Trek reference
A long range sensor scan or long range scan is a scan which allows a person to search a large area in space for objects such as starships.
In 2151, Captain Jonathan Archer ordered Lieutenant Malcolm Reed to stay on their long range scanners and let him know when the Enterprise made another contact with the unidentified aliens they had encountered earlier. (ENT: "Silent Enemy")
In 2267, the sensors of the USS Enterprise were able to scan out to one parsec (3.26 light years) and give a near instantaneous result. (TOS: "The Enterprise Incident")
In 2367. Lieutenant Commander Geordi La Forge stated that the long range sensors aboard the USS Enterprise-D were able to scan a radius of ten light years within a 24-hour period; effectively, one sector per day. (TNG: "The Wounded")
In 2369, Lieutenant Commander Worf informed Commander William T. Riker that the long range sensors of the Enterprise-D picked up a distress call from a Romulan warbird. Later, La Forge was unable to find the Enterprise-D, as it was not at the rendezvous point. He told Captain Jean-Luc Picard that the long range sensors were at maximum and there was no sign of the Enterprise-D. (TNG: "Timescape")
The same year Doctor Julian Bashir and Major Kira Nerys responded to a priority one distress signal from the Kobliad transport ship Reyab and found the ship via the longe range sensors. (DS9: "The Passenger")
During a rescue mission for the runabout USS Yangtzee Kiang in the Gamma Quadrant, the long range sensors of the USS Rio Grande were affected by the delta radiation of the star of a binary star system. (DS9: "Battle Lines")
The computer aboard Deep Space 9 activated the longe range sensors when Commander Sisko requested data about all Cardassian traffic at the border in 2369. (DS9: "The Forsaken")
In 2370, Sam Lavelle performed a long range scan to find the escape pod near the Cardassian border, but with no success. Data suggested it was possible that at this distance, the sensors of the Enterprise-D were unable to distinguish the pod from the inorganic matter normally present in space. (TNG: "Lower Decks")
In an alternate timeline, Data, on board the USS Pasteur, performed a long range sensor scan to locate anomalies in the Devron system but found nothing. (TNG: "All Good Things...")
In 2372, Worf performed a long range sensor scan from a console on the bridge of the USS Defiant, searching for Klingon starships. (DS9: "The Way of the Warrior")
