Teledyne SeaBat T Series, Operator'S Manual, Page: 8 / 152

SeaBat T-Series Subsea Operator's Manual Page viii January 31, 2019
Version 7
6.2.6 Pulse Length...........................................................................................................33
6.2.7 Pulse Type..............................................................................................................34
6.2.8 Vari-Swath ..............................................................................................................34
6.2.9 Use of Beam Modes ...............................................................................................37
6.2.10 Use of Gates...........................................................................................................39
6.3 Enhancing System Efficiency .........................................................................................42
6.3.1 Multi-Detect Operation............................................................................................42
6.3.2 Tracker Autopilot.....................................................................................................43
6.3.3 Roll Stabilization .....................................................................................................43
6.3.4 Head Tilt .................................................................................................................44
6.4 Compensation for Environmental Conditions .................................................................45
6.4.1 Loss of Sound by Absorption..................................................................................46
6.4.2 Loss of Sound by Spreading...................................................................................48
6.4.3 Sound Velocity........................................................................................................48
6.5 Limitations ......................................................................................................................50
6.5.1 Cavitation................................................................................................................50
6.5.2 Machinery Noise .....................................................................................................50
6.5.3 Interference from Other Sonar Systems .................................................................51
6.5.4 Speed .....................................................................................................................51
6.5.5 Air Bubbles .............................................................................................................51
6.5.6 Environment............................................................................................................51
7 System Performance and Data Types ......................................................52
7.1 System Components ......................................................................................................54
7.1.1 Subsea Sonar Processor........................................................................................54
7.1.2 EM7219-1 Receiver Unit (T20) ...............................................................................55
7.1.3 EM7218-1 Receiver Unit (T50) ...............................................................................55
7.1.4 TC2160 Projector Unit (deep).................................................................................55
7.1.5 TC2163 Projector Unit (deep).................................................................................56
7.1.6 TC2181 Projector Unit (shallow).............................................................................56
7.2 Selectable Beam Density ...............................................................................................57
7.2.1 Beam Modes...........................................................................................................57
7.2.2 Equi-Distant, Equi-Angle, and Intermediate Modes................................................58
7.3 Data Types .....................................................................................................................60
7.3.1 Bathymetry Data .....................................................................................................60
7.3.2 Side-Scan Data.......................................................................................................60
7.3.3 Snippets Backscatter Data .....................................................................................60
7.4 Multi-Detect ....................................................................................................................62
7.5 X-Range Performance....................................................................................................62
7.6 Full Rate Dual Head .......................................................................................................62
7.7 Quality ............................................................................................................................63
7.7.1 Brightness Test.......................................................................................................63
7.7.2 Colinearity Test.......................................................................................................64
7.7.3 Quality Filter............................................................................................................65
7.8 Uncertainty Estimation ...................................................................................................65
7.9 Hydrodynamic Drag........................................................................................................66
7.9.1 Drag Simulation Setup............................................................................................66
7.9.2 Drag Simulation Conclusions..................................................................................66
7.9.3 Drag Simulation Results .........................................................................................67