Abstract
A 70 kHz correlation velocity log (CVL) for AUV has recently been developed. The hardware design and signal processing were discussed. Localized least mean squares (LLMS) algorithm was proposed as the criterion of velocity estimation. The CVL underwent lake trials in Qiandao Lake Sea both on a ship and an AUV in Aug 2011. The CVL was calibrated. Trackline test, varying speed cruise test and drifting test were carried out to examine the performance of the CVL. The uncertainty statistics from the lake trial showed that the velocity accuracy of the CVL was about 0.8%V. This work was supported by Knowledge Innovation Project of Chinese Academy of Sciences.
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