Omnitech Electronics' AHLS (pronounced. ‘alice’) is a directional acoustic array, processing module and acoustic modem (optional) combined in a single navigation sensor. The system is mounted inside an AUV nose cone and provides a long-range acoustic bearing (LRAB) to a ‘homing’ beacon.
The AHLS-2465 is the successor to AHLS-2317. See the AHLS-2317 page for additional information and Project Cornerstone for information on the development and use case for AHLS.