From Halopedia, the Halo wiki
Hyperscanners are an advanced type of sensor system developed by the Forerunners and typically mounted on Covenant warships. They are capable of providing extremely-detailed information on any object in range, including internal scans and structural composition. Unfortunately, the sheer volume of data available overwhelm the Covenant crews, and as a result their workstations typically filter anything not of immediate tactical significance. Hyperscanner technology was employed by the Sangheili and equipped on their older Vestige warships such as the Hekar Taa-pattern blockade runner; even these antiquated designs are considered superior to most human-developed sensor technologies, though more modern Covenant starships are capable of easily avoiding their detection. The Mutan Et-pattern storm cutter employs more modern hyperscanner technologies. The sensor vanes of various Covenant ship classes may serve as a part of their respective vessels' hyperscanner systems.
Close to the conclusion of the Human-Covenant War, Forerunner hyperscanner systems captured by the UNSC were moved to the Kelvin Research Station at Pluto for research and analysis. The fruits of these labours would reveal themselves in the form of the Winter-class prowler, whose naval architects had access to the United Nations Space Command's most cutting-edge technologies and were able to integrate a hyperscanner array into the class - entering service in 2549. A long-ranged hyperscanner, alongside a Luminary, was later integrated into the UNSC Infinity, launched in 2553, and most recently the Autumn-class heavy cruiser in 2554.
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