Page
74
of
254
Version
6.3
Rev
r012
Date
05-11-2022
Part No. 96000001
A more technical way to look at this is the change over from equidistant to equiangular occurs when
the outer beam grazing angle is 80° or greater. This is based on the below equation:
(Swath Width / 2) + Head tilt + Sector rotate = grazing angle of the outermost beam
Figure 64: Bottom Sampling Modes
5.6.6.1
Dual/Quad Mode
The Dual/Quad bottom sampling modes can be used with both equiangular and equidistant
sampling. The modes work by spatially distributing the acrosstrack bottom sampling, ping by ping.
The beam is slightly repositioned, in the acrosstrack direction, with each ping. This mode was
developed for ROV/AUV survey operations.
The Dual/Quad mode will work at all speeds;
however
,
it is at slower speeds, that the Dual or Quad
modes will be more evident.
Beam Repositioning Angle = [SectorCoverage / (256-1)] / n
Where:
n = 1 for Normal Mode
n = 2 for Double (or Dual) Mode
n = 4 for Quad Mode
The Dual/Quad mode requires 16-May-2013 head firmware and 17-Oct-2013 GUI or more recent.
All firmware from Head$16-may-2013-03-58-29 will have this feature available. All GUIs, from
17Oct2013 and newer, will support the Dual/Quad mode.
Содержание 2026
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Страница 158: ...Figure 174 Smooth log information copied from a real time survey log...
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Страница 237: ...Page 237 of 254 Version 6 3 Rev r012 Date 05 11 2022 Figure 215 Sonic 2026 Projector...
Страница 241: ...Page 241 of 254 Version 6 3 Rev r012 Date 05 11 2022 Figure 219 Sonic 2022 Receiver Projector horizontal offset...
Страница 242: ...Page 242 of 254 Version 6 3 Rev r012 Date 05 11 2022 Part No 96000001 Figure 220 Sonic 2024 Mounting Bracket Drawing...
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Страница 245: ...Page 245 of 254 Version 6 3 Rev r012 Date 05 11 2022 Figure 223 Sonic 2024 2022 Mounting Bracket Flange...
Страница 246: ...Page 246 of 254 Version 6 3 Rev r012 Date 05 11 2022 Part No 96000001 Figure 224 SIM Box Drawing...
Страница 247: ...Page 247 of 254 Version 6 3 Rev r012 Date 05 11 2022 Figure 225 SIM Stack Outline...
Страница 249: ...Page 249 of 254 Version 6 3 Rev r012 Date 05 11 2022 Figure 227 Locking Ring type Deck Lead...
Страница 250: ...Page 250 of 254 Version 6 3 Rev r012 Date 05 11 2022 Part No 96000001 Figure 228 I2NS Type 42 IMU Dimensions...
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Страница 252: ...Page 252 of 254 Version 6 3 Rev r012 Date 05 11 2022 Part No 96000001 Figure 230 I2NS IMU Cable...
Страница 253: ...Page 253 of 254 Version 6 3 Rev r012 Date 05 11 2022 Figure 231 I2NS SIM Dimensions...
Страница 254: ...Page 254 of 254 Version 6 3 Rev r012 Date 05 11 2022 Part No 96000001 Figure 232 Dual Head Mount Offsets...