4aUW4. Test results for a synthetic aperture sonar (SAS).

Session: Thursday Morning, June 19

Author: Mark L. Neudorfer
Location: Hughes Aircraft Co., Naval and Maritime Systems, 6500 Harbour Heights Pkwy., Mukilteo, WA 98275-4844, mark_neudorfer@atk.com
Author: Dennis Garrood
Location: Hughes Aircraft Co., Mukilteo, WA 98275
Author: Tony Luk
Location: Hughes Aircraft Co., Mukilteo, WA 98275
Author: Matt Nelson
Location: Dynamics Technology, Inc., Torrance, CA


A special purpose synthetic aperture sonar (SAS) system has been developed and built by Hughes Aircraft Co. and Dynamics Technology, Inc. The main features of the system are a 3.2-m-long, 32-element linear array, and a data acquisition system capable of recording the elemental data in real time while preserving the phase and amplitude fidelity required by SAS processing. High-resolution, large (100[sup 2] m[sup 2]) and small (3[sup 2] m[sup 2]) SAS images of various objects will be presented that demonstrate resolutions of 20 cm at 1000 m. The innovation of the work is that resolution achievable only with short-range, high-frequency sonar has been demonstrated at ranges obtainable only with a low-frequency sonar. [Work supported by DARPA.]

ASA 133rd meeting - Penn State, June 1997