3-20
BATS
0018257_REV_A
3.3.2
Hydrophone X and Y Offsets and Hydrophone Depth
Hydrophone Offsets reference the target position to Vessel’s Pitch and Roll Center and correct for the
hydrophone’s dynamic motion. Hydrophone motion is due to the pitching and rolling of the vessel when
it is not on the pitch or roll center of the vessel.
NOTE:
These offsets assume hydrophone is rigidly mounted to vessel.
When mounted offset from the vessel’s pitch / roll center, the hydrophone swings in an arc about the
pitch / roll center causing variations in hydrophone depth, X and Y offsets as the vessel experiences
dynamic motion. These variations cause the target to appear at a different depth, Depression Angle and
Bearing than it actually is. By entering in X, Y, and Z offsets the system can correct for this dynamic motion
if a survey grade MRU is interfaced to the BATS.
It is assumed that the vertical reference for the pitch/roll center is the waterline of vessel or the entered
‘DEPTH OFF-SET.’
NOTE:
The TrackMan Software outputs the target position (X & Y) with
respect to the pitch / roll center of the vessel graphically in Display,
numerically in Status Block and on the RS-232 serial communications
port.
shows the horizontal distance and bearing (X & Y) for the beacon are determined relative to
the pitch / roll center of the vessel (C).
NOTE:
The slant range remains relative to the Hydrophone.
Determine the Hydrophone X and Y offsets as follows:
1.
Measure the distance between the hydrophone (H) and the pitch / roll center of the vessel (C) in
terms of X and Y coordinates on a horizontal plane at water level.
a.
The X coordinate is the distance perpendicular to the centerline – dxH in
. The Y
coordinate is the distance parallel to or along the centerline – dyH in
b.
Distance along the X-axis from the centerline towards a starboard direction has a positive
value. In this example, the X offset is 7 meters. Distance towards the port side of the vessel
has a negative value.
Summary of Contents for USBL BROADBAND ACOUSTIC TRACKING SYSTEM
Page 20: ......
Page 26: ......
Page 28: ...SECTION 2 SPECIFICATIONS 2 2 BATS 0018257_REV_A Figure 2 1 BATS USBL Portable System ...
Page 29: ...2 3 Figure 2 2 Portable BATS Transceiver Figure 2 3 Portable BATS Transceiver Side Panel ...
Page 44: ...SECTION 2 SPECIFICATIONS 2 18 Figure 2 11 BATS Portable System Mechanical Outline 0020020 ...
Page 45: ...2 19 Figure 2 12 BATS Desktop System Mechanical Outline 0020022 ...
Page 46: ...SECTION 2 SPECIFICATIONS 2 20 Figure 2 13 BATS Rackmount System Mechanical Outline 0020017 ...
Page 52: ...3 6 Figure 3 3 Hydrophone Outline Drawing 0019592 ...
Page 53: ...3 7 Figure 3 4 Hydrophone MTG Arrangement Page 1 of 2 0020018 ...
Page 54: ...3 8 Figure 3 5 Pipe Angle Bracket Arrangement Page 2 of 2 0020018 ...
Page 55: ...3 9 Figure 3 6 Angle Bracket Drawing 007327 ...
Page 56: ...3 10 Figure 3 7 15m 50ft Deck Cable for Desktop 002936 ...
Page 57: ...3 11 Figure 3 8 30m 100ft Deck Cable for Desktop 0002935 ...
Page 58: ...3 12 Figure 3 9 Deck Cable for Portable 0003458 ...
Page 60: ...3 14 Figure 3 10 Suggested Mounting Arrangement in Machined Shaft Flange OTS 0010007 ...
Page 61: ...3 15 Figure 3 11 Suggested Hydrophone Shaft Machining Through Hull 0020019 ...
Page 62: ...3 16 BATS 0018257_REV_A Figure 3 12 Gate Valve Type Installation ...
Page 65: ...3 19 Figure 3 14 Hydrophone Mounting Diagram ...
Page 78: ...3 32 BATS 0018257_REV_A Figure 3 23 Sync Interface Connector Data Diagram on Desktop Unit ...
Page 79: ...3 33 Figure 3 24 Sync Interface Connector Desktop Console 0002566 ...
Page 80: ...3 34 Figure 3 25 Analog Interface Connector Data Diagram Desktop Console ...
Page 81: ...3 35 Figure 3 26 Analog Interface Connector Desktop Console 0002984 ...
Page 82: ...3 36 Figure 3 27 Ethernet Cable 1PPS 0002474 ...
Page 83: ...3 37 Figure 3 28 BATS Portable AC Cord 0002868 ...
Page 84: ...3 38 Figure 3 29 BATS Portable COMMS Cable 0014672 ...
Page 85: ...3 39 Figure 3 30 Portable BATS Synchronization Connector ...
Page 86: ...3 40 Figure 3 31 BATS Portable Sync Cable 0002567 ...
Page 87: ...3 41 Figure 3 32 Portable BATS Analog Input Connector Data Diagram ...
Page 88: ...3 42 Figure 3 33 BATS Portable Analog Connector Assembly Drawing 0002441 ...
Page 90: ......
Page 95: ...5 5 Figure 5 3 BATS Block Diagram 1 ...
Page 96: ...5 6 Figure 5 4 BATS Block Diagram 2 ...
Page 97: ...5 7 Figure 5 5 Portable BATS Block Diagram 1 ...
Page 98: ...5 8 Figure 5 6 Portable BATS Block Diagram 2 ...