Biophysical Interdisciplinary Tropic Studies buoy (BITS)
The Biophysical Interdisciplinary Tropic Studies (BITS) buoy is an instrumented and unmanned mooring experiment set designed to acoustically measure the size and abundance of marine life populations, collect the supporting data that characterizes the marine environment, and automatically transmit the data to shore stations for analysis.
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The BITS system was developed by the Tracor corporation and the University of Southern California. It employs a bi–frequency acoustic projector which operates at 165 kHz and 1.1 MHz, with backscattered acoustic signals received by the sensors transmitted via Very High Frequency (VHF) packet telemetry to shore stations.