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CAN UNCLASSIFIED
Defence Research and Development Canada Reference Document DRDC-RDDC-2017-D150 January 2018
CAN UNCLASSIFIED
Field Trial Plan: TATD System Trials at CFMETR, November 2015
Garfield R. Mellema DRDC – Atlantic Research Centre
CAN UNCLASSIFIED
Template in use: Normal.dotm © Her Majesty the Queen in Right of Canada (Department of National Defence), 2018
© Sa Majesté la Reine en droit du Canada (Ministère de la Défense nationale), 2018
CAN UNCLASSIFIED
IMPORTANT INFORMATIVE STATEMENTS
Disclaimer: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence ("Canada"), makes no representations or warranties, express or implied, of any kind whatsoever, and assumes no liability for the accuracy, reliability, completeness, currency or usefulness of any information, product, process or material included in this document. Nothing in this document should be interpreted as an endorsement for the specific use of any tool, technique or process examined in it. Any reliance on, or use of, any information, product, process or material included in this document is at the sole risk of the person so using it or relying on it. Canada does not assume any liability in respect of any damages or losses arising out of or in.
This document was reviewed for Controlled Goods by Defence Research and Development Canada (DRDC) using the Schedule to the Defence Production Act.
Endorsement statement: This publication has been published by the Editorial Office of Defence Research and Development Canada, an agency of the Department of National Defence of Canada. Inquiries can be sent to: [email protected].
DRDC-RDDC-2017-D150 i
Abstract
The Towed Active Torpedo Detection (TATD) system is a high frequency active sonar system comprised
of a towed directional source and a towed array receiver, as well as equipment on the towing vessel to
operate the source and process the received signals. The purpose of this system is concept evaluation and
development for the Torpedo Defence project.
This field trial is the first opportunity to validate and evaluate the operation of the newly developed
directional source, TOwed MultiChannel Acoustic Transmitter (TOMCAT), and the newly reconfigured
High Frequency Towed Array (HFTA). The system is to be tested against a towed passive acoustic target,
also recently developed for this activity. Data from this trial will to be used to refine the system concepts
and further develop the TATD system, by validating the operation of the source and receiver, and
advancing the signal processing aspects of this system.
This trial is to be held at the CFMETR 3D tracking range in November 2015, using two of their ships,
CFAV STIKINE (613) and CFAV SIKANNI (611).
ii DRDC-RDDC-2017-D150
Résumé
Le système remorqué de détection active des torpilles (TATD) est constitué d’un sonar actif haute
fréquence comportant une source directionnelle et un récepteur de réseau remorqués, ainsi qu'un
équipement sur le navire remorqueur pour exploiter la source et traiter les signaux reçus. Ce système a
pour objet l’élaboration et l’évaluation de concepts dans le cadre du projet de défense antitorpille.
Les essais en conditions réelles constituent la première occasion d’évaluer et de valider l’exploitation de
la source directionnelle récemment mise au point, de l'émetteur acoustique multicanaux remorqué
(TOMCAT) et du réseau haute fréquence remorqué (HFTA) nouvellement reconfiguré. Le système doit
être vérifié par rapport à une cible acoustique passive remorquée, elle aussi élaborée il n’y a pas
longtemps pour cette activité. Les données de ces essais serviront à affiner les concepts du système TATD
et à le perfectionner davantage en validant l’exploitation de la source et du récepteur et en progressant
dans le traitement des signaux.
Ces essais devaient être tenus au champ de tir 3D du CEEMFC, en novembre 2015, au moyen de deux de
leurs navires, le NAFC STIKINE (613) et le NAFC SIKANNI (611).
DRDC-RDDC-2017-D150 iii
Table of contents
Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Résumé . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
List of figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Organizations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4 CAF Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
5 Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
6 Experiments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
7 Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
8 Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
9 Proceedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
10 Records and Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
11 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
12 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
13 Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
14 Weather . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
15 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
16 Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
17 Signatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
17.1 Distribution List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
17.1.1 DRDC – Atlantic Research Centre internal: . . . . . . . . . . . . . . . . 7
17.1.2 External: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Annex A TOMCAT— TOwed MultiChannel Acoustic Transmitter . . . . . . . . . . . . . 8
Annex B HFTA—High Frequency Towed Array . . . . . . . . . . . . . . . . . . . 10
Annex C Sharko—Towed Acoustic Target . . . . . . . . . . . . . . . . . . . . . 11
Annex D Equipment Packages . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Annex E Equipment Operation . . . . . . . . . . . . . . . . . . . . . . . . . 14
Annex F Environmental Assessment Requirements Decision Checklist . . . . . . . . . . 15
iv DRDC-RDDC-2017-D150
List of figures
Figure A.1: Isometric drawing of TOMCAT. . . . . . . . . . . . . . . . . . . . . . . . 8
Figure A.2: Isometric drawing of TOMCAT. . . . . . . . . . . . . . . . . . . . . . . . 9
Figure C.1: The Sharko towed target. . . . . . . . . . . . . . . . . . . . . . . . . . 11
DRDC-RDDC-2017-D150 v
List of tables
Table 1: The approximate field trial schedule for November 2015. . . . . . . . . . . . . . 3
vi DRDC-RDDC-2017-D150
This page intentionally left blank.
DRDC-RDDC-2017-D150 1
1 Overview
Chief Scientist (DRDC): Garfield Mellema, Torpedo Defence/Maritime Asset Protection
902- 407-0527, [email protected]
Project: DRDC Project 01CC: Torpedoes and Torpedo Defence
Field Trial Dates: 23–27 November 2015
Field Trial Ships: CFAV STIKINE, CFAV SIKANNI
Field Trial Location: CFMETR
A specific assessment of the utility of HF sonars for torpedo detection and tracking in the vicinity of a
ship was planned under the DRDC Torpedo Defence project.
The sea trial will begin with an engineering trial of the newly built TOwed MultiChannel Acoustic
Transmitter (TOMCAT) and the newly reconfigured High Frequency Towed Array (HFTA)1. Having
validated these components, the trial will continue with system-level tests to evaluate the performance of
the directional source and receiver and their effectiveness in detecting a towed target. Data from this trial
will be used to develop algorithms to manage the transmitted signals, to process the received signals, and
to detect and track targets.
This field trial will take place on the Nanoose 3-D Range at CFMETR, a DND facility. The trial will use
CFMETR ships CFAV STIKINE and CFAV SIKANNI, which are torpedo and ship ranging vessels
(TSRV) They are 32.9 m long with a 8.5 m beam, a displacement of 290 tons and a speed of
approximately 15 knots. The trial will not require range tracking support.
2 Organizations
This sea trial is a specific activity planned for and supported by DRDC Project 01CC (Torpedoes and
Torpedo Defence WBE 2 Active Torpedo Detection). The sponsor of this Project is Director Naval
Requirements 5.
The lead DND organization is: DRDC – Atlantic Research Centre.
The Canadian Forces Maritime Experimental and Test Ranges (CFMETR) is a partner in this sea trial.
1 Descriptions of TOMCAT, HFTA and the Sharko towed target can be found in Annexes A–C.
2 DRDC-RDDC-2017-D150
3 Objectives
The specific scientific and technical objectives of this sea trial are:
1. To perform engineering trials of the new towed acoustic source and the newly reconfigured towed
array.
2. To measure the beam patterns of the towed acoustic source at a series of frequencies.
3. To record signals transmitted by the towed acoustic source, including signals reflected by the target.
4. To collect data to support the development of processing algorithms.
5. To test a HF multibeam sonar for potential interference with CFMETR underwater tracking systems.
4 CAF Support
This field trial will be held at CFMETR and will make use of their personnel as part of their regular
duties.
5 Locations
This field trial will be held at the CFMETR Nanoose Bay 3-D range, in operating area WG, which is
controlled by CFMETR. Hence a separate Area Clearance request is not necessary. This field trial will be
the primary user of the range.
6 Experiments
1. Assessment of TOMCAT towing depth-speed-layback characteristics:
– Measure the towing characteristics of the newly built TOMCAT directional acoustic source and
make adjustments necessary to achieve a stable tow at a depth of about 20 m. Record the depth vs
speed and layback for later use.
2. Assessment of HFTA towing depth-speed-layback characteristics:
– Measure the towing characteristics of the newly reconfigured HFTA towed array and make
adjustments necessary to achieve a stable tow at a depth of about 20 m. Record the depth vs speed
and layback for later use.
3. Acoustic testing of TOMCAT and the HFTA:
– Measure the beam pattern response of TOMCAT and the HFTA while both devices are being
towed. Measure background noise on the HFTA.
4. Testing of Towed Active Target Detection:
DRDC-RDDC-2017-D150 3
– Using a quasi-monostatic configuration, confirm the ability of TOMCAT-HFTA combination to
produce echoes from the Sharko towed target. Collect data to support the development of
processing algorithms, including runs with the target coming into and out of range, high and low
Doppler, various bistatic angles and various bearings relative to the tow ship using single and multi-
frequency signals. Also collect background noise and reverberation.
5. Multibeam Sonar Interference Evaluation:
– Evaluate the potential for interference between the multibeam sonar and the CFMETR underwater
tracking systems.
7 Schedule
Table 1: The approximate field trial schedule for November 2015.
Date Location Activity
Nov 21,22 Halifax to Nanaimo DRDC team flies to Nanaimo, BC.
Nov 22 CFMETR Begin unpacking and assembling equipment.
Nov 23 CFMETR at dock Assemble and test equipment alongside. Assemble TOMCAT on
the primary ship and test transmit capability. Assemble the HFTA
and Sharko on the target ship.
Nov 24–25 Operating area WG
at CFMETR
Primary ship will tow TOMCAT at various speeds (2–8 knots) and
depths along a generally straight path to determine depth vs speed
and scope. TOMCAT will be deployed and recovered several times.
Target ship will tow the HFTA at various speeds (2–10 knots) and
with variable cable scope to determine depth vs speed and scope.
After the HFTA has been recovered, the target ship will tow Sharko
instead. Sharko may be deployed and recovered several times.
Transmission measurements from TOMCAT to the HFTA.
Nov 26–27 Operating area WG
at CFMETR
Primary ship will tow both TOMCAT and the HFTA in a dual tow,
with the HFTA 50 m aft of TOMCAT. Target ship will tow Sharko
and maneuver within a few km of the primary ship. Sharko will act
as a target for the TOMCAT-HFTA active sonar. Tows will
typically be 15–20 m deep at 4–6 knots.
As a separate, independent activity, operate the Multibeam Sonar to
evaluate potential interference with the range tracking system.
Nov 27 pm CFMETR at dock Disassemble and pack equipment alongside.
Nov 28 CFMETR Complete packing of the equipment for transit.
Nov 28–29 Nanaimo to Halifax DRDC team flies to Halifax, NS.
4 DRDC-RDDC-2017-D150
8 Equipment
The following DRDC –Atlantic Research Centre scientific equipment will be used:
1. TOMCAT towed acoustic source with 200 m tow cable, amplifiers and controller;
2. High-Frequency Towed Array (HFTA) with 150 m tow cable, receiver, and recording unit;
3. Towed HF acoustic target (Sharko) with 220 m tow rope;
4. Omnidirectional hydrophone receiver (Reson TC4032); and
5. Kongsberg Mesotech SM-2000 multibeam sonar.
See also Annex D. DRCD Project 01CC will cover shipping expenses for this equipment to and from
CFMETR.
9 Proceedures
1. Assessment of TOMCAT towing depth-speed-layback characteristics:
– The primary ship will tow TOMCAT at various speeds (2 to 8 knots) and with variable cable scope
along a generally straight course. A fixed receiver on the target ship may be used to confirm
electro-acoustic response. TOMCAT may be deployed and retrieved several times as required.
2. Assessment of HFTA towing depth-speed-layback characteristics:
– The target ship will tow the HFTA at various speeds (2 to 10 knots) and with variable cable scope
along a generally straight course. The HFTA may be deployed and retrieved several times as
required. After the HFTA has been recovered, the target ship may tow Sharko, subject to similar
tests as time allows.
3. Acoustic testing of TOMCAT and the HFTA:
– Measure the beam pattern response of both TOMCAT and the HFTA while the devices are being
towed on parallel and anti-parallel paths at separations between 200 m and 2 km. Measure
background noise on the HFTA. See Annex E for more information on equipment operations.
4. Testing of Towed Active Target Detection:
– The primary ship will tow both TOMCAT and the HFTA in a dual-tow configuration at speeds
approx. 4 to 6 knots along a generally straight course. TOMCAT will have a cable scope of about
100 m. The HFTA will be towed about 50 m aft of TOMCAT. The target ship will tow Sharko at
speeds up to 10 knots with a cable scope between 100 m and 200 m. The target ship will perform
both parallel runs and overtaking maneuvers in the vicinity of the primary ship. A minimum CPA to
the primary ship of 200 m will be respected.
5. Multibeam Sonar Interference Evaluation:
– As a separate, independent activity, the Multibeam Sonar will be operated on the primary ship while
the target ship maneuvers in and out of the field of view of the sonar. The target ship will operate a
tracking pinger for assessment of potential interference between the Multibeam Sonar and the range
tracking system. The activity will take a few hours and will occur at the convenience of the range.
DRDC-RDDC-2017-D150 5
10 Records and Reports
The chief scientist and designated persons will keep a written log of all scientific operations, including
computer data logging. At the completion of the trial the chief scientist will collate and reconcile all
written and electronic logs in order to produce a sea trial summary report. A hotwash summary will be
produced within two weeks of the completion of the sea trials. A draft sea trial summary report, intended
to be publically releasable, will be completed within two months of the sea trial. These data and results
will be used in final project reports scheduled for completion in FY16/17, and depending on quality of the
results may form the basis for a scientific publication.
At the completion of the sea trials, computer data files will be backed up on appropriate removable media
and hand-carried back to DRDC. Recording media will be subject to appropriate DRENet scanning
procedures.
CFMETR is responsible for the collection, post-processing and archiving of any oceanographic and
meteorological data collected during this sea trial.
11 Security
All aspects of this sea trial are UNCLASSIFIED. The acoustic equipment under test are NOT designated
Controlled Goods.
12 Safety
General conduct of trials and ship-board life will be governed by the DRDC document Guidelines for
Seagoing Personnel. The Chief Scientist is responsible for safety supervision of the DRDC personnel on
the trial. With respect to health and safety procedures, the CFMETR Range Operations Officer will have
final authority regarding ship and crew employment.
No explosives or hazardous materials will be used during this sea trial.
13 Environmental
This trial will be held at CFMETR and is covered under the standing DND Environmental Assessment for
CFMETR, which can be found at http://esquimalt.mil.ca/cfmet/environment.htm. Operations will be
conducted in accordance with CFMETR environmental policies.
The acoustic source levels and frequencies of sources employed during this trial, and the length and duty
cycle of the pings are such that they should not cause distress to marine mammals. Following a
precautionary approach, a minimum separation of 500 m between marine mammals and any acoustic
6 DRDC-RDDC-2017-D150
sources will be maintained. A visual watch for marine mammals will be maintained during times when
acoustic sources are used.
14 Weather
It is believed possible to conduct operations up to the upper limit of Sea State 4 (wind speeds of
16 knots). Assessment of weather conditions will occur at 0700h on sea-going days. CFMETR range staff
have final authority on safe operating conditions.
15 Communications
CFMETR personnel will provide all necessary communications equipment for use on the range. DRDC
personnel will follow CFMETR protocols for communication while at the range. The CFMETR contact
numbers are:
CFMETR HQ 5011 (on site) or 250-468-5011
Range Operations Centre (24 hr Security Desk) 5080 (on site) or 250-468-5080
CFMETR Main Gate (24 hr Commissionaire) 5060 (on site) or 250-468-5060
Fire / First Aid / Emergency 5000 (on site) or 250-468-5000
16 Personnel
The following DRDC Personnel will attend this trial:
Dr. Garfield Mellema (MAP Section) Chief Scientist
Dr. Mark Trevorrow (MAP Section) Scientist
Mr. Trevor Ponee (TS Section) Mechanical support
Mr. Dang Phan (US Section) HF towed array specialist
Mr. Mark Fotheringham (US Section) Acoustic source specialist
All travel, per diem, and accommodation costs for the DRDC staff will be covered under Project 01CC.
See attached Authorization for Overtime.
DRDC-RDDC-2017-D150 7
17 Signatures
Trial Chief Scientist: ______________________________________
Dr. Garfield Mellema, Defence Scientist/TorD
Section Head: ____________________________________
Mr. David Hopkin, H/MAP
Project Manager: ______________________________________
Ms. Elizabeth Blanchette, PMTD
Centre Director: ______________________________________
Dr. Calvin Hyatt, CD/DRDC – Atlantic Resear
17.1 Distribution List
17.1.1 DRDC – Atlantic Research Centre internal:
Dr. Garfield Mellema, Chief Scientist
Dr. Mark Trevorrow, H/TorD
Mr. David Hopkin, H/MAP
Mr. Dan Hutt, H/US
Ms. Elizabeth Blanchette, aSH/TS, PMTD
Mr. Isaias Peraza, Project Engineer 01CC
17.1.2 External:
Mr. Ed Ferguson, PD Project 01CC, NDHQ
8 DRDC-RDDC-2017-D150
Annex A TOMCAT— TOwed MultiChannel Acoustic Transmitter
The TOwed MultiChannel Acoustic Transmitter (TOMCAT) is a towed directional projector. It is about
2.4 m long, 0.4 m in diameter and weighs about 100 kg when fully assembled. The forward, nose and tail
sections are removable and the centre compartment can be broken down once the transducer array has
been removed. It is normally shipped unassembled. When deployed, it is towed using a 200 m long,
20 mm diameter electro-mechanical cable.
At the core of TOMCAT is a phased array consisting of eight vertical staves, each consisting of four
free-flooded rings wired in parallel. The beam pattern produced by the array is relatively narrow in the
vertical and horizontal planes. Each stave is fed by a separate set of conductors in the tow cable, allowing
the projected beam to be steered in the horizontal plane by conditioning the signals to the individual
staves. As each steered beam occupies only a portion of the available bandwidth of the array, it is possible
to simultaneously project multiple, unique signals at different angles. This increases the coverage of the
projector while maintaining its directionality and can be highly effective in reducing interference due to
reverberation.
The operating frequency of TOMCAT is 8 to 14 kHz with maximum on-axis acoustic source levels of up
to 205 dB. Typical source signals are up to 250 ms in length at pulse intervals near 4 s.
TOMCAT is free-flooding, with internal depth and pitch-roll-heading sensors. It is essential that the
transducer array be oriented horizontally for proper operation. The forward section of the TOMCAT body
offers multiple tow points, in order to adjust its pitch. In addition, the orientation of the transducer array
can be modified relative to the tow body by adjusting its fore and aft mounting points. Typical towing
depths are near 20 m at 150 m layback at speeds of 4 to 6 knots.
Figure A.1: Isometric drawing of TOMCAT.
DRDC-RDDC-2017-D150 9
Figure A.2: Isometric drawing of TOMCAT.
10 DRDC-RDDC-2017-D150
Annex B HFTA—High Frequency Towed Array
The HFTA is a small towed acoustic array. It is about 1.6 m long, 60 mm in diameter and weighs
approximately 20 kg. It has 16 acoustic channels tuned for acoustic frequencies in the band 5 to 15 kHz.
Twelve (12) of the elements form a linear array and the rest are mounted in pairs orthogonal to the line of
the array and to each other to provide 3D directionality. It is towed using a 150 m electro-mechanical
cable. Typical towing depths are near 20 m at 150 m layback at speeds of 4 to 6 knots.
DRDC-RDDC-2017-D150 11
Annex C Sharko—Towed Acoustic Target
Sharko is a towed acoustic target very similar in size to TOMCAT. It is 2.4 m long by 0.4 m in diameter
and weighs approximately 100 kg (see photo). It is freely flooding and contains two 28 cm diameter
target spheres. It is towed with a 220 m long, 6 mm diameter AmSteel Blue (Dyneema) tow rope. Typical
towing depths are 20 m to 30 m at speeds of 4 to 8 knots.
Figure C.1: The Sharko towed target.
12 DRDC-RDDC-2017-D150
Annex D Equipment Packages
The High Frequency Towed Array (HFTA) includes the following:
1. The HFTA tow body;
2. A rope drogue;
3. The 150 m long tow cable on a wooden spool;
4. The M508 Receiver Box:
a. This box separates the towed array cable signals into 16 analog signals on a VHDCA
connector, the pitch-roll-heading sensor data in RS-232 format on a DB9 connector, and an
analog pressure (depth) signal on a BNC connector.
5. The Reach acoustic data recorder:
a. This recorder will digitize the 16 analog channels from the array; and
b. It receives GPS timing signals via an IRIG-B interface.
6. IRIG-B timing generator:
a. This device converts GPS signals into a 1 pps IRIG-B data stream for the Reach acoustic data
recorder.
7. Network time Server:
a. This is used to sync computer clocks to GPS time. It is especially important if the Reach
acoustic data recorder is not properly using the IRIG-B information.
8. GPS receiver:
a. This device will supply GPS information to the IRIG-B generator; and
b. This device will also provide position and time messages in RS-232 format to be recorded by
a computer.
9. USB to RS-232 adapter, to convert the RS-232 signals from the M508 receiver box;
10. USB to RS-232 adapter, to convert the RS-232 signals from the GPS receiver;
11. NI-DAQ analog to digital conversion module, to convert the analog pressure sensor signal from the
M508 receiver box;
12. Computer running LabVIEW:
a. To record the pitch-roll-heading sensor data from the towed array via M508 connector box
and the RS-232 to USB adapter;
b. To record the output of the pressure sensor via the NI-DAQ analog to digital conversion
module; and
c. To record GPS time and position as supplied by the GPS receiver.
DRDC-RDDC-2017-D150 13
The Sharko Target includes the following:
1. The Sharko tow body, which may be disassembled;
2. Two SonarBell LF target spheres, which fit inside Sharko. They are blue anodized aluminum, 27.5 cm
in diameter and weigh about 38.5 lb in air, about 14.5 lb in fresh water, and 52 lb in their packing case;
3. Two blue packing cases, 35 cm on a side, for the SonarBells;
4. A rope drogue; and
5. A 500 m long, 6 mm diameter AmSteel-Blue (Dyneema) tow rope.
The TOwed MultiChannel Acoustic Transmitter (TOMCAT) includes the following:
1. The TOMCAT tow body, which may be disassembled;
2. A rope drogue;
3. The 200 m tow cable;
4. A 20 m deck cable; and
5. Two electronics cases, one black, one blue.
GPS time and position recorder for use on the ship not carrying the HFTA:
1. GPS receiver;
2. USB to RS-232 adapter, to convert the RS-232 signals from the GPS receiver; and
3. Computer to record the GPS time and position information from the GPS receiver via the USB to
RS-232 adapter.
Self-contained pitch-roll-heading sensor-recorder RBR-420 for use in TOMCAT and/or Sharko.
Self-contained depth sensor-recorder BR-2050 for use in TOMCAT and Sharko.
The Reson TC4032 omnidirectional hydrophone includes the following:
1. Reson TC4032 omnidirectional hydrophone;
2. Protective cage for the hydrophone;
3. Extended length cable to connect the hydrophone to the amplifier;
4. Reson EC6073 hydrophone amplifier (requires external 12-24 V DC power); and
5. Power supply for the hydrophone amplifier.
The deep dive wing (DDW-1) is used to increase the depth of a towed device.
External hard drive to back up all of the acquired data.
Tape measure to locate the GPS antennas and the tow point.
Camera.
Equipment should be packaged for delivery to a specific ship.
14 DRDC-RDDC-2017-D150
Annex E Equipment Operation
1. Whenever TOMCAT is operating:
a. Install an RBR-420 roll-pitch-heading sensor and an RBR-2050 depth sensor.
b. The ‘Main – Torpedo Tomcat’ VI, which generates the signal transmitted by TOMCAT, will
record the time and file name of the transmitted signals. (VI = Virtual Instrument, a program
running under LabVIEW).
c. A terminal program, such as TAC32PLUS or TeraTerm should be used to log the GPS time
and position:
i. The GPS time and position come from a GPS receiver and can be recorded using a
USB-RS-232 interface.
d. The layback is recorded manually in the log book.
2. Whenever the HFTA is operating:
a. The Reach acoustic data recorder will record the acoustic signals received by the HFTA:
i. The acoustic signals come from the M508 HFTA controller via a ribbon cable.
ii. Record at 16 bits and 96 kbps unless otherwise specified.
b. The Reach acoustic data recorder will use IRIG-B signals to sync the recording time to GPS
time:
i. The IRIG-B signals come from an IRIG-B module connected to a GPS receiver.
c. The ‘Position and Attitude’ VI will record the roll-pitch-heading signals from the HFTA:
i. The roll-pitch heading signals come from the M508 HFTA controller as an RS-232
stream and can be recorded via a USB-RS-232 interface.
d. The ‘Lamda Depth Logger’ VI will record the depth signal from the HFTA:
i. The depth signal comes from the M508 HFTA controller as an analogue signal and is
recorded via an NI-DAQ A/D module.
e. A terminal program, such as TAC32PLUS or TeraTerm should be used to log the GPS time
and position:
i. The GPS time and position come from a GPS receiver and can be recorded using a
USB-RS-232 interface.
f. The layback is recorded manually in the log book.
3. Whenever Sharko is used:
a. Install an RBR-2050 depth sensor.
b. A terminal program, such as TAC32PLUS or TeraTerm should be used to log the GPS time
and position:
i. The GPS time and position come from a GPS receiver and can be recorded using a
USB-RS-232 interface.
c. The layback is recorded manually in the log book.
DRDC-RDDC-2017-D150 15
Annex F Environmental Assessment Requirements Decision Checklist
16 DRDC-RDDC-2017-D150
DRDC-RDDC-2017-D150 17
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DOCUMENT CONTROL DATA (Security markings for the title, abstract and indexing annotation must be entered when the document is Classified or Designated)
1. ORIGINATOR (The name and address of the organization preparing the document.
Organizations for whom the document was prepared, e.g., Centre sponsoring a
contractor's report, or tasking agency, are entered in Section 8.)
DRDC – Atlantic Research Centre Defence Research and Development Canada 9 Grove Street P.O. Box 1012 Dartmouth, Nova Scotia B2Y 3Z7 Canada
2a. SECURITY MARKING (Overall security marking of the document including
special supplemental markings if applicable.)
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3. TITLE (The complete document title as indicated on the title page. Its classification should be indicated by the appropriate abbreviation (S, C or U) in
parentheses after the title.)
Field Trial Plan: TATD System Trials at CFMETR, November 2015
4. AUTHORS (last name, followed by initials – ranks, titles, etc., not to be used)
Mellema, G.R.
5. DATE OF PUBLICATION (Month and year of publication of document.)
January 2018
6a. NO. OF PAGES
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including Annexes, Appendices,
etc.)
23
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0
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e.g., interim, progress, summary, annual or final. Give the inclusive dates when a specific reporting period is covered.)
Reference Document
8. SPONSORING ACTIVITY (The name of the department project office or laboratory sponsoring the research and development – include address.)
DRDC – Atlantic Research Centre Defence Research and Development Canada 9 Grove Street P.O. Box 1012 Dartmouth, Nova Scotia B2Y 3Z7 Canada
9a. PROJECT OR GRANT NO. (If appropriate, the applicable research
and development project or grant number under which the document
was written. Please specify whether project or grant.)
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DRDC-RDDC-2017-D150
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assigned this document either by the originator or by the sponsor.)
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Public release
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12. ABSTRACT (A brief and factual summary of the document. It may also appear elsewhere in the body of the document itself. It is highly desirable that
the abstract of classified documents be unclassified. Each paragraph of the abstract shall begin with an indication of the security classification of the
information in the paragraph (unless the document itself is unclassified) represented as (S), (C), (R), or (U). It is not necessary to include here abstracts in
both official languages unless the text is bilingual.)
The Towed Active Torpedo Detection (TATD) system is a high frequency active sonar system
comprised of a towed directional source and a towed array receiver, as well as equipment on the
towing vessel to operate the source and process the received signals. The purpose of this system
is concept evaluation and development for the Torpedo Defence project.
This field trial is the first opportunity to validate and evaluate the operation of the newly
developed directional source, TOwed MultiChannel Acoustic Transmitter (TOMCAT), and the
newly reconfigured High Frequency Towed Array (HFTA). The system is to be tested against a
towed passive acoustic target, also recently developed for this activity. Data from this trial will
to be used to refine the system concepts and further develop the TATD system, by validating the
operation of the source and receiver, and advancing the signal processing aspects of this system.
This trial is to be held at the CFMETR 3D tracking range in November 2015, using two of their
ships, CFAV STIKINE (613) and CFAV SIKANNI (611).
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Le système remorqué de détection active des torpilles (TATD) est constitué d’un sonar actif
haute fréquence comportant une source directionnelle et un récepteur de réseau remorqués, ainsi
qu'un équipement sur le navire remorqueur pour exploiter la source et traiter les signaux reçus.
Ce système a pour objet l’élaboration et l’évaluation de concepts dans le cadre du projet de
défense antitorpille.
Les essais en conditions réelles constituent la première occasion d’évaluer et de valider
l’exploitation de la source directionnelle récemment mise au point, de l'émetteur acoustique
multicanaux remorqué (TOMCAT) et du réseau haute fréquence remorqué (HFTA)
nouvellement reconfiguré. Le système doit être vérifié par rapport à une cible acoustique
passive remorquée, elle aussi élaborée il n’y a pas longtemps pour cette activité. Les données de
ces essais serviront à affiner les concepts du système TATD et à le perfectionner davantage en
validant l’exploitation de la source et du récepteur et en progressant dans le traitement des
signaux.
Ces essais devaient être tenus au champ de tir 3D du CEEMFC, en novembre 2015, au moyen
de deux de leurs navires, le NAFC STIKINE (613) et le NAFC SIKANNI (611).
13. KEYWORDS, DESCRIPTORS or IDENTIFIERS (Technically meaningful terms or short phrases that characterize a document and could be helpful
in cataloguing the document. They should be selected so that no security classification is required. Identifiers, such as equipment model designation,
trade name, military project code name, geographic location may also be included. If possible keywords should be selected from a published thesaurus,
e.g., Thesaurus of Engineering and Scientific Terms (TEST) and that thesaurus identified. If it is not possible to select indexing terms which are
Unclassified, the classification of each should be indicated as with the title.)
active sonar; HFTA; phased array; sonar; TOMCAT; torpedo; torpedo defence; towed array