Removal of Range-Dependent Artifacts from Sidescan Sonar Imagery
DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION VICTORIA (AUSTRALIA) AERONAUTICAL AND MARITIME RESEARCH LAB
Pagination or Media Count:
A radiosity correction algorithm to improve the quality of sidescan sonar mosaics is reported. The algorithm removes consistent range-dependent variations from sidescan sonar imagery caused by failure of the TVG time-varying gain to completely compensate for variations due to transducer beam profiles and sediment backscatter strength. The correction is appropriate to high-frequency sidescan sonars with constant gain characteristics, such as the Klein 5000. The algorithm appears robust in situations where the bottom is relatively flat and the towfish altitude does not change much.
- Physical and Dynamic Oceanography
- Acoustic Detection and Detectors