StreamPro ADCP Operation Manual - global site

StreamPro ADCP Operation ManualAUV: Autonomous Underwater Vehicle------ B ------Backscatter: 1) The portion of a sound wave that is reflected by scatterersdirectly back toward the source. 2) A qualitative measurement (in decibels)of scatterer concentration which is calculated in the WinRiver software.This calculation corrects the echo intensity data for sound absorption, beamspreading, transducer temperature, etc. and provides an excellent means oftracking relative concentration (e.g. “Is most of the sediment in the waterhere or is it there?”). Obtaining a quantitative measurement (e.g. “Howmany mg/L of bottom sediment are in this parcel of water?”) requires a fieldcalibration at the measurement site. There is a third-party software package,Sediview, designed for this task.BBBatch: Utility program to allow automated conversion of a series of rawbinary ADCP files to ASCII files.BBCheck: Utility program that checks the integrity and quality of raw binaryADCP files.BBConv: Utility program to convert some portion of a raw binary ADCPfile into an ASCII file using a decoder file. Several decoder files are includedon the TRDI Tools CD, for example: extract only distance to firstbin, extract only navigation data, etc. Complete documentation on thesedecoder files as well as information on how to write your own is available.BBList: Utility program for viewing and converting raw binary ADCP datafiles. It is a menu-driven program offering a step-by-step process to convertraw binary files to ASCII files.BBMerge: Utility program to convert comma-delimited ASCII files backinto raw binary ADCP format.BBSlice: A raw data sub-sectioning utility program. BBSlice converts araw data file into a series of ASCII files, opening a new ASCII file wheneverthere is a jump in the sequence of ensemble numbers.BBss: Utility program to calculate the speed of sound when given temperature,salinity and depth.BBSub: A raw data sub-sectioning utility program. BBSub allows you toextract subsets of raw data from a large raw data file by choosing the startingand ending ensemble number.BBTalk: Terminal emulator program for direct communication with theCPU of an ADCP or DVL.Beam Angle: The angle between a transducer beam’s main axis and the verticalaxis of the ADCP or DVL (typically 20 or 30º).P/N 95B-6003-00 (February 2008) page 99