Field Trial Plan: TATD System Trials at CFMETR, October 2016

Transcription

1 CAN UNCLASSIFIED Field Trial Plan: TATD System Trials at CFMETR, October 2016 Garfield R. Mellema DRDC Atlantic Research Centre Defence Research and Development Canada Reference Document DRDC-RDDC-2017-D149 January 2018 CAN UNCLASSIFIED

2 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 peer-reviewed and 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: 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

3 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. The purpose of this field trial is to systematically validate the operation of the TATD system. The trial is to begin with engineering trials of the TOwed MultiChannel Acoustic Transmitter (TOMCAT) and the newly repaired high frequency towed array (HFTA). Having validated these components, the trial will continue with system-level tests to evaluate the performance of TOMCAT and HFTA and their effectiveness in detecting fixed, towed, and autonomous targets. 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 trial is to be held at the CFMETR 3D tracking range in October 2016, using one of their ships, either CFAV STIKINE (613) or CFAV SIKANNI (611). Mobile targets will be provided and operated by the range. DRDC-RDDC-2017-D149 i

4 Résumé Le système remorqué de détection active des torpilles (TATD) est constitué d un sonar actif haute fréquence comportant une source directionnelle remorquée 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 des concepts dans le cadre du projet de défense antitorpille. Les essais en conditions réelles ont pour but de valider de façon systématique l exploitation du système TATD. On a commencé par procéder à des essais techniques de l'émetteur acoustique multicanaux remorqué (TOMCAT) et du réseau haute fréquence remorqué (HFTA) nouvellement réparé. Une fois ces composants validés, on a poursuivi par des essais de niveau système pour évaluer les performances du TOMCAT et du HFTA, ainsi que leur efficacité à détecter les cibles fixes, remorquées et autonomes. Les données de ces essais ont servi à élaborer des algorithmes pour gérer les signaux émis, traiter les signaux reçus, de même que détecter et poursuivre les cibles. Ces essais devaient être tenus au champ de tir 3D du CEEMFC, en octobre 2016, au moyen d'un de leurs navires, soit le NAFC STIKINE (613) ou le NAFC SIKANNI (611). Le personnel du champ de tir se chargeait de fournir et de manœuvrer les cibles mobiles. ii DRDC-RDDC-2017-D149

5 Table of contents Abstract i Résumé ii Table of contents iii List of figures v List of tables vi 1 Overview Organizations Objectives Support Locations Experiments Schedule Equipment Procedures Records and Reports Security Safety Safety Briefings Setup At Sea (deck operations) At Sea (indoor activities) Conclusion Environmental Weather Communications Personnel Signatures Distribution List DRDC Atlantic Research Centre internal: External: Annex A TOMCAT TOwed MultiChannel Acoustic Transmitter Annex B HFTA High Frequency Towed Array Annex C Sharko Towed Acoustic Target Annex D Equipment Packages Annex E Environmental Assessment Requirement Decision checklist DRDC-RDDC-2017-D149 iii

6 List of figures Figure A.1: The TOMCAT towed source Figure A.2: Isometric drawing of TOMCAT Figure C.1: The Sharko towed target iv DRDC-RDDC-2017-D149

7 List of tables Table 1: The approximate field trial schedule for October DRDC-RDDC-2017-D149 v

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9 1 Overview Trial Chief Scientist (DRDC): Project: Garfield Mellema, Torpedo Defence / Maritime Asset Protection x252, garfield.mellema@drdc-rddc.gc.ca DRDC Project 01CC: Torpedoes and Torpedo Defence Field Trial Dates: 31 October 04 November 2016 Field Trial Ship: Field Trial Location: CFAV STIKINE or CFAV SIKANNI 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 field trial will begin with an engineering trial of the updated Towed Multi-Channel Acoustic Transmitter (TOMCAT) and the newly repaired 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 fixed, towed and autonomous targets. 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 a CFMETR torpedo and ship ranging vessel (TSRV), either CFAV STIKINE or CFAV SIKANNI. These ships 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 require range support for the provision, launch, tracking and recovery of the autonomous vehicles. The trial vessel will be tracked by the range and the towed bodies may also be tracked by the range. 2 Organizations The Towed Active Torpedo Detection (TATD) system trials are 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. DRDC-RDDC-2017-D149 1

10 3 Objectives The specific scientific and technical objectives of this sea trial are: 1. To perform engineering trials of the updated towed acoustic source and the newly repaired high frequency towed array; 2. To record signals transmitted by the towed acoustic source, including signals reflected by fixed, towed and autonomous targets; and 3. To collect data to support the development of processing algorithms. 4 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 with the exception of a half-day trial by another user. 6 Experiments 1. Assessment of TOMCAT and HFTA towing depth-speed-layback characteristics: Measure the towing characteristics of the TOMCAT directional acoustic source and the HFTA 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. Measure background noise on the HFTA. 3. Testing of Towed Active Target Detection: Using a quasi-monostatic configuration, confirm the ability of the TOMCAT-HFTA combination to produce echoes from available fixed and mobile targets. Targets may include geographic features such as Winchelsea Island, and mobile targets such as the Sharko towed target. Collect data to calibrate the equipment configuration and to support the development of processing algorithms. 4. Testing against an autonomous vehicle: Using a quasi-monostatic configuration, confirm the ability of the TOMCAT-HFTA combination to produce echoes from a MK 30 ASW 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. 2 DRDC-RDDC-2017-D149

11 7 Schedule Table 1: The approximate field trial schedule for October Date Location Activity Oct 29, 30 Halifax to Nanaimo DRDC team flies to Nanaimo, BC. Oct 30 CFMETR Begin unpacking and assembling equipment. Oct 31 CFMETR at dock Assemble and test equipment alongside. Assemble TOMCAT and HFTA on the ship and test transmit and receive capability. Assemble and test control and recording and display equipment in the ship. Nov Operating area WG at CFMETR Tow TOMCAT and HFTA at various speeds (2 8 knots) and depths along a generally straight path to confirm correct operation of the towbodies, including depth control, and proper operation of the control and display equipment. Tow TOMCAT and HFTA at various speeds past available fixed and mobile targets, possibly including the hull of another range vessel or the Sharko towed target to confirm correct operation of the TATD system and collect data for the development of processing algorithms. Tow TOMCAT and HFTA at various speeds in the vicinity of an autonomous vehicle equipped with an echo repeater in order to confirm, by the observation of echoes, the presence of the autonomous vehicle and to record echoes for use in the development of processing algorithms. Nov 4 pm CFMETR at dock Disassemble and pack equipment alongside. Nov 5 CFMETR Complete packing of the equipment for transit. Nov 5, 6 Nanaimo to Halifax DRDC team flies to Halifax, NS. 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; and 4. Omnidirectional hydrophone receiver (Reson TC4032). See also Annex D. DRCD Project 01CC will cover shipping expenses for this equipment to and from CFMETR. DRDC-RDDC-2017-D149 3

12 9 Procedures 1. Assessment of TOMCAT and HFTA towing depth-speed-layback characteristics: Tow TOMCAT and HFTA in a dual-tow configuration at various speeds (2 to 8 knots) and with variable cable scope along a generally straight course to confirm that the towbodies can reach a depth of at least 20 m. Depths will be measured using real-time depth sensors. Towing stability will be measured using a recording roll-pitch-yaw sensor. TOMCAT may be deployed and retrieved several times as required. Ambient noise will be recorded on the HFTA. 2. Testing of Towed Active Target Detection: Tow TOMCAT and HFTA at various speeds (2 to 10 knots) and with variable cable scopes in the vicinity of an available fixed or mobile target. The HFTA will receive transmissions from TOMCAT as well as reflections from the target. The signals received on the HFTA will be recorded on the Reach acoustic data recorder (ADR) for later analysis and for the development of processing algorithms. The received signals will also be processed and displayed on network-connected computers. 3. Testing against an autonomous vehicle: Tow TOMCAT and HFTA at a consistent depth at variable speeds (2 8 knots) and cable scopes along a generally straight path. An autonomous vehicle will be travelling along a known, preprogrammed course. The HFTA will receive transmissions directly from TOMCAT and from an echo repeater on the autonomous vehicle. The HFTA will also receive echoes from the body of the autonomous vehicle. The signals received on the HFTA will be recorded on the Reach acoustic data recorder (ADR) for later analysis and for the development of processing algorithms. The received signals will also be processed and displayed on network-connected computers. 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 quick look 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 FY17/18 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. 4 DRDC-RDDC-2017-D149

13 11 Security All aspects of this sea trial are UNCLASSIFIED. The acoustic equipment under test is 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. Activities at CFMETR are further governed by the CFMETR Standing Orders which can be found at 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 Safety Briefings Daily activities will begin with a briefing for all DRDC and CFMETR personnel involved in the trial by the Chief Scientist and the CFMETR Range Officer, which will cover the activities planned for the day and include a safety briefing relevant to those activities Setup The equipment to be used in this trial was developed at DRDC by the team members and was previously used by this team at DRDC and at CFMETR on a previous trial. The setup and takedown portions of the trial involves the unloading, assembling, and staging of equipment, and the movement of equipment and personnel to and from the ship while it is docked. A forklift and a crane, provided and operated by CFMETR, will be used to lift large and/or heavy items. Smaller items can be carried by hand or using carts provide by CFMETR. The three DRDC technologists will be performing these activities together, which are routine in nature. Risks are mitigated by wearing appropriate personal protective equipment (PPE), including hard hats, safety shoes, and gloves At Sea (deck operations) Daily activities during the at-sea portion of the trial will include launch and recovery of the TOMCAT towbody. The Sharko towbody may also be used. As this will involve the use of the ship's crane to lift the towbody and the ship's winch to store and manage the tow cable, this activity will be led by CFMETR personnel. DRDC personnel will manage the mechanical and electrical connections to the towbodies. The High Frequency Towed Array (HFTA) does not require the use of a crane and may be deployed and recovered manually by using a capstan and manual reeler. Every launch and recovery activity will be preceded by a safety briefing. Launch and recovery procedures were rehearsed at a previous CFMETR DRDC-RDDC-2017-D149 5

14 trial, and in October at the DRDC barge. Other risks onboard the ship include exposure to wet and cool weather, seasickness, trips, and falls. These risks are mitigated by the use of personal floatation devices (PFD), safety shoes and other PPE. Gravol is also available. The feasibility of the at-sea activities is weather dependent and they will not be held in rough weather At Sea (indoor activities) The dry equipment to be operated by DRDC personnel during the trial will be housed in a 6 m (20 foot) container on the stern of the ship. The container is weather tight and has an HVAC system to keep it at a comfortable temperature and humidity. The dry end of the TOMCAT system is mounted in rack cases. All electrical connections, including those internal to the racks, are insulated and the racks are secured to the floor and wall of the container. The dry end of the HFTA system, which is much smaller, is similarly protected. Both systems are controlled and monitored by a network of desktop and laptop computers which will be located on workbenches in the container. DRDC personnel will also have access to the rest of the ship. Any large equipment in the container can be easily moved by two people and will be secured during the trial. Risks in this part of the trial include seasickness, trips, and falls. No explosives or hazardous materials will be used during this sea-trial Conclusion Based on the identification of risks above, mitigation plans being put in place, and experience in previous trials of a similar nature, the risk to personnel health and safety is deemed LOW. 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 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 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. 6 DRDC-RDDC-2017-D149

15 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 Range Operations Centre (24 hr Security Desk) 5080 (on site) or CFMETR Main Gate (24 hr Commissionaire) 5060 (on site) or Fire / First Aid / Emergency 5000 (on site) or DRDC personnel can be reached via the main DRDC switchboard at (902) After normal business hours the emergency contact numbers are: Dr. Calvin Hyatt (Centre Director) Cdr. Craig Bradley XXX-XXX-XXXX (cell) XXX-XXX-XXXX (cell) 16 Personnel The following DRDC Personnel will attend this trial: Dr. Garfield Mellema (MAP Section) Dr. Mark Trevorrow (MAP Section) Mr. Trevor Ponee (TS Section) Mr. Mark Baldin (TS Section) Mr. Mark Fotheringham (US Section) Chief Scientist Scientist Mechanical support Electronics support Electronics support All travel, per diem, and accommodation costs for the DRDC staff will be covered under Project 01CC. See attached Authorization for Overtime. Trial personnel can be reached via the MAP section administrative officer, Geneva Gray at local 277 or geneva.gray@forces.gc.ca. DRDC-RDDC-2017-D149 7

16 17 Signatures Trial Chief Scientist: Section Head: Project Manager: Centre Director: Dr. Garfield Mellema, Defence Scientist/TorD Dr. Gisele Amow, A/H/MAP Ms. Elizabeth Blanchette, PMTD Dr. Calvin Hyatt, CD/DRDC Atlantic Research Centre 17.1 Distribution List DRDC Atlantic Research Centre internal: Dr. Garfield Mellema, Trial Chief Scientist Dr. Mark Trevorrow, H/TorD Dr. Gisele Amow, A/H/MAP Ms. Elizabeth Blanchette, PMTD Ms. Laura Bertino, M/TS External: Mr. Ed Ferguson, PD Project 01CC, NDHQ 8 DRDC-RDDC-2017-D149

17 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 (see Figure A.2). The forward, nose and tail sections are removable and the center 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. It is painted orange. 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 15 khz with maximum on-axis acoustic source levels of up to 205 db. Typical source signals are up to 500 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. DRDC-RDDC-2017-D149 9

18 Figure A.1: The TOMCAT towed source. Figure A.2: Isometric drawing of TOMCAT. 10 DRDC-RDDC-2017-D149

19 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-D149 11

20 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 Figure C.1). 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. It is painted yellow. 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-D149

21 Annex D Equipment Packages The High Frequency Towed Array (HFTA) includes the following: 1. THE HFTA packing case: a. A black road case approximately 30 x 50 x 200 cm. 2. The HFTA tow body: a. A slightly flexible, smooth black plastic hose about 1.6 m long, 60 mm in diameter and weighing approximately 20 kg. 3. A rope drogue. 4. The 200 m long tow cable on a wheeled aluminum reeler. 5. A 20 m deck cable to connect between the tow cable and receiver box. 6. The M508 Receiver Box: a. This black, metal box separates the signals arriving on the towed array cable into: i. 16 analog signals on a VHDCA connector; ii. the pitch-roll-heading sensor data in RS-232 format on a DB9 connector; and iii. an analog pressure (depth) signal on a BNC connector. b. It also accepts: i. 12 V power for the array on a pair of banana plugs; and ii. IRIG-B time signal from the CNS Clock box on a BNC connector. 7. The Reach analog data recorder (ADR): a. This recorder will digitize the 16 analog channels from the array, which it receives on a VHDCA connector. b. It synchronizes the digitized signals with the IRIG-B clock information received via the receiver box and writes them to an internal hard drive. c. It multicasts the digitized channels over an Ethernet connection. d. It includes a VHDCA cable to connect to the HFTA receiver box. 8. CNS Clock box (shared with TOMCAT and installed in the large gray TOMCAT electronics case): a. This box converts GPS signals received on a GPS antenna into 1 pps IRIG-B time signals for use by the Reach analog data recorder; b. It includes a GPS antenna connected by a TNC cable; c. It includes a TNC extension cable; d. It includes a 120 V wall adapter; e. It includes a rack-mountable IRIG clock display; and f. It includes BNC cables to connect the IRIG-B signals to the Reach ADR and the clock display. DRDC-RDDC-2017-D149 13

22 9. D-Link DGS-1024D Gigabit Network Switch: a. This switch will allow multiple computers to connect to and receive data from the Reach ADR multicast. 10. USB to RS-232 adapter, to convert the RS-232 pitch-roll-heading signals from the M508 receiver box. 11. NI-DAQ analog to digital conversion module, to read the analog depth (pressure sensor) signal from the M508 receiver box: a. This NI-DAQ has a USB interface. 12. Bench power supply to supply 12 V power to the receiver box. 13. Computer running LabVIEW: a. Includes a USB hub to support the large number of USB devices in use; b. To record the pitch-roll-heading sensor data from the HFTA via M508 receiver box and the RS-232 to USB adapter; c. To record the output of the pressure sensor via the NI-DAQ analog to digital conversion module; and d. To record GPS time and position as supplied by the GPS receiver. 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. 5. A 500 m long, 6 mm diameter AmSteel-Blue (Dyneema) tow rope for use on a winch. A nylon rope of equivalent or greater strength may be substituted for improved handling. 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 on a wheeled aluminum reeler. 4. A 20 m deck cable. 5. A Druck depth sensor which is installed in the forward end of TOMCAT. 6. Two gray plastic electronics cases one large, one small: a. The larger case contains the NI-DAQ, the digital filter cards and the power amplifiers as well as the Druck depth sensor display and interface and the CNS clock box: i. This NI-DAQ has an RJ-45 Ethernet interface. 14 DRDC-RDDC-2017-D149

23 b. The smaller case contains analog filters and the deck cable interface. 7. An USB to RS-232 adapter to connect the Druck interface in the electronics case to a PC. 8. GPS receiver with a DB9 connector and Molex connector for the NI-DAQ, and banana plugs for power to supply serial time and position data as well as a 1 pps timing signal to the NI-DAQ. 9. Computer running LabVIEW: a. To program and control TOMCAT transmissions via a network cable to the the NI-DAQ; b. To record TOMCAT depth information as provided by the Druck interface; and c. To record GPS time and position information as supplied by the GPS receiver. 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 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. 2 TB External hard drive to back up all of the acquired data. Tape measure to locate the GPS antennas and the tow points. Camera. DRDC-RDDC-2017-D149 15

24 Annex E Environmental Assessment Requirement Decision checklist 16 DRDC-RDDC-2017-D149

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31 CAN UNCLASSIFIED 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.) 2a. SECURITY MARKING (Overall security marking of the document including special supplemental markings if applicable.) DRDC Atlantic Research Centre Defence Research and Development Canada 9 Grove Street P.O. Box 1012 Dartmouth, Nova Scotia B2Y 3Z7 Canada CAN UNCLASSIFIED 2b. CONTROLLED GOODS NON-CONTROLLED GOODS DMC A 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, October 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 a. NO. OF PAGES (Total containing information, including Annexes, Appendices, etc.) 28 6b. NO. OF REFS (Total cited in document.) 0 7. DESCRIPTIVE NOTES (The category of the document, e.g., technical report, technical note or memorandum. If appropriate, enter the type of report, 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.) 9b. CONTRACT NO. (If appropriate, the applicable number under which the document was written.) 01cc 10a. ORIGINATOR S DOCUMENT NUMBER (The official document number by which the document is identified by the originating activity. This number must be unique to this document.) 10b. OTHER DOCUMENT NO(s). (Any other numbers which may be assigned this document either by the originator or by the sponsor.) DRDC-RDDC-2017-D149 11a. FUTURE DISTRIBUTION (Any limitations on further dissemination of the document, other than those imposed by security classification.) Public release 11b. FUTURE DISTRIBUTION OUTSIDE CANADA (Any limitations on further dissemination of the document, other than those imposed by security classification.) CAN UNCLASSIFIED

32 CAN UNCLASSIFIED 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. The purpose of this field trial is to systematically validate the operation of the TATD system. The trial is to begin with engineering trials of the TOwed MultiChannel Acoustic Transmitter (TOMCAT) and the newly repaired high frequency towed array (HFTA). Having validated these components, the trial will continue with system-level tests to evaluate the performance of TOMCAT and HFTA and their effectiveness in detecting fixed, towed, and autonomous targets. 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 trial is to be held at the CFMETR 3D tracking range in October 2016, using one of their ships, either CFAV STIKINE (613) or CFAV SIKANNI (611). Mobile targets will be provided and operated by the range Le système remorqué de détection active des torpilles (TATD) est constitué d un sonar actif haute fréquence comportant une source directionnelle remorquée 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 des concepts dans le cadre du projet de défense antitorpille. Les essais en conditions réelles ont pour but de valider de façon systématique l exploitation du système TATD. On a commencé par procéder à des essais techniques de l'émetteur acoustique multicanaux remorqué (TOMCAT) et du réseau haute fréquence remorqué (HFTA) nouvellement réparé. Une fois ces composants validés, on a poursuivi par des essais de niveau système pour évaluer les performances du TOMCAT et du HFTA, ainsi que leur efficacité à détecter les cibles fixes, remorquées et autonomes. Les données de ces essais ont servi à élaborer des algorithmes pour gérer les signaux émis, traiter les signaux reçus, de même que détecter et poursuivre les cibles. Ces essais devaient être tenus au champ de tir 3D du CEEMFC, en octobre 2016, au moyen d'un de leurs navires, soit le NAFC STIKINE (613) ou le NAFC SIKANNI (611). Le personnel du champ de tir se chargeait de fournir et de manœuvrer les cibles mobiles. 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 CAN UNCLASSIFIED