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StreamPro ADCP Operation Manual10.5 Correlation Magnitude, Echo Intensity, andPercent-Good Data FormatBIT POSITIONSBYTE 7/S 6 5 4 3 2 1 01 ID CODE LSB2 MSB3 DEPTH CELL #1, FIELD #14 DEPTH CELL #1, FIELD #25 DEPTH CELL #1, FIELD #36 DEPTH CELL #1, FIELD #47 DEPTH CELL #2, FIELD #18 DEPTH CELL #2, FIELD #29 DEPTH CELL #2, FIELD #310 DEPTH CELL #2, FIELD #4↓ (SEQUENCE CONTINUES FOR UP TO 128 BINS) ↓511 DEPTH CELL #128, FIELD #1512 DEPTH CELL #128, FIELD #2513 DEPTH CELL #128, FIELD #3514 DEPTH CELL #128, FIELD #4See Table 13, page 75 through Table 15, page 77 for a description of the fields.Figure 29.Binary Correlation Magnitude, Echo Intensity, and Percent-GoodData FormatNOTE. The number of depth cells is set by the WN-command.page 74Teledyne RD Instruments
StreamPro ADCP Operation ManualCorrelation magnitude data give the magnitude of the normalized echoautocorrelation at the lag used for estimating the Doppler phase change.The StreamPro represents this magnitude by a linear scale between 0 and255, where 255 is perfect correlation (i.e., a solid target). A value of zeroindicates bad correlation values.Table 13:Hex DigitBinaryByteCorrelation Magnitude Data FormatFieldDescription1-4 1,2 ID Code Stores the correlation magnitude data identification word 0200(00 02h). LSB is sent first.5,6 3 Depth Cell 1,Field 17,8 4 Depth Cell 1,Field 29,10 5 Depth Cell 1,Field 311,12 6 Depth Cell 1,Field 413 – 1028 7 – 514 Cells 2 – 128(if used)Stores correlation magnitude data for depth cell #1, beam #1.See above.Stores correlation magnitude data for depth cell #1, beam #2.See above.Stores correlation magnitude data for depth cell #1, beam #3.See above.Stores correlation magnitude data for depth cell #1, beam #4.See above.These fields store correlation magnitude data for depth cells 2through 128 (depending on the WN-command) for all fourbeams. These fields follow the same format as listed above fordepth cell 1.The echo intensity scale factor is about 0.45 dB per StreamPro count. TheStreamPro does not directly check for the validity of echo intensity data.Table 14:Hex DigitBinaryByteEcho Intensity Data FormatFieldDescription1 – 4 1,2 ID Code Stores the echo intensity data identification word 0300(00 03h). LSB is sent first.5,6 3 Depth Cell 1,Field 17,8 4 Depth Cell 1,Field 29,10 5 Depth Cell 1,Field 311,12 6 Depth Cell 1,Field 413 – 1028 7 – 514 Cells 2 – 128(if used)Stores echo intensity data for depth cell #1, beam #1. Seeabove.Stores echo intensity data for depth cell #1, beam #2. Seeabove.Stores echo intensity data for depth cell #1, beam #3. Seeabove.Stores echo intensity data for depth cell #1, beam #4. Seeabove.These fields store echo intensity data for depth cells 2 through128 (depending on the WN-command) for all four beams.These fields follow the same format as listed above for depthcell 1.P/N 95B-6003-00 (February 2008) page 75
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