Artemis PRO

ARTEMIS PRO is a handheld underwater computer that incorporates a target detection multibeam sonar, DVL, Camera, Dive-Light, Acoustic Positioning, Data Modem and GNSS navigation aids, designed to assist divers navigate underwater or perform seabed surveying and location of objects on the seabed.

The integrated Doppler Velocity Log (DVL) and Attitude Heading Reference (AHRS) sensors allows divers to swim a preset course using dead-reckoning positioning, removing the need to surface frequently and obtain a new position fixes.

Typical uses for ARTEMIS PRO are…

  • Swimming a predetermined path or to coordinates using acoustic dead-reckoning, without the need to resurface.
  • Search and location of unexploded ordnance by mine clearance divers, commercial EOD divers, etc.
  • Sub-surface navigation, area survey and bottom profiling operations.
  • Lost property, vehicles, aircraft, missing persons, wrecks by police or search & rescue divers.

ARTEMIS PRO is intuitive and straightforward to use, as the interface has been designed by divers for divers. The user can quickly interpret information presented via the simple menu interface and graphical display. Sonar, Navigation and other apps are selected and controlled via a simple 10-button interface.

Prior to diving, the NavPointPRO PC software application allows creation of “Mission” files, containing background chart graphics, navigation waypoints that the diver can choose as destinations during the dive, or use to map out a search-pattern or course to swim. Mission markers can be entered in text form, positioned over imported S57/S63 nautical charts or from other third-party sources (such as Google Earth) in formats including CSV, GPX or KML.

For diver navigation and positioning ARTEMIS PRO provides several solutions: either a small surface float containing a GNSS receiver (capable of receiving GPS, Glonass, Beidou and Galileo signals) may be attached to provide continuous absolute positioning or a Doppler Velocity Log (DVL) module and integrated GNSS antenna attached to provide a “dead reckoning” based navigation solution. When the diver is ready to start diving, a “Start Dive” wizard guides them through choosing the appropriate navigation mode and starting location before commencing logging data from the sonar, navigation system and other sensors into a “Dive-Log” file. Additional navigation markers can also be added to the dive-log file by the diver as they encounter other targets or locations of interest.

The diver’s position, heading, depth and course history are shown on ARTEMIS PRO’s display with any selected mission marker. Additional points of interest may also be added during the dive and reviewed post-dive. ARTEMIS PRO incorporates a 4 beam, 1MHz DVL with a 50+ metre bottom tracking range and a velocity resolution of 1mm/second. The DVL is used to interpolate the diver’s position and speed over ground when a GNSS fix is not available. The output from the DVL also tracks the height of the diver above the seabed and this information, in conjunction with the pressure sensor data, gives total water column depth. Position drift over time can be corrected by augmentation with occasional GNSS locations.

After the dive, using the USB connection data can be transferred from the internal Flash storage on ARTEMIS PRO and a Microsoft® Windows® based PC or laptop. The NavPointPRO software then allows reviewing of the dive-log data, synchronising the sonar imagery with the divers position and heading on a navigational chart. Data can be exported in a variety of formats for further use and analysis by third party software applications.

 

System

  • Dimensions: 430mm(L) x 340mm(W) x 200mm(H)
  • Weight: ~11.0kg in air, ~0.25kg in water (option dependant)
  • Construction: Black acetal plastic and Anodised Aluminium
  • Connectors: Implulse MCBH series connectors: 1 x 8 pin USER/USB connector (connects to PC via included adapter lead)
  • Operating Temperature (underwater): 0°C to +45°C
  • Storage Temperature: -20°C to +50°C
  • Operating Depth : 80m sea-water

Console

  • Dimensions: 240mm long x 148mm wide x 68mm high excluding connectors
  • Construction: Anodized Aluminium
  • Power: 12-24V DC
  • Processor : NVIDEA Tegra 3, quad-core Cortex-A9 @ 1.4GHz
  • RAM : 2Gb DDR3
  • Storage : 8Gb system storage, 512Gb internal SATA-II solid-state-disk
  • Display : 1024 x 600 (WSVGA), 7.0″ (153mm x 86mm) LCD, LED White Backlight, 500cd/m2, 2D/3D Graphics Acceleration
  • Video Encoder : Hardware integrated H264, MPEG-4
  • USB Support : USB2.0, 480Mbits/s (High Speed)
  • Ethernet Support : 100-BaseT full duplex
  • User Interface : 10 solid-state piezo buttons (Power, Home, F1-F8)
  • Integrated Sensors : Blanking plug detection, Internal over-temperature, supply voltage and current drain
  • External Interfaces : Impulse MCBH series connectors: Battery Pod, Sonar, Navigation Pod, Camera*, Dive-Light*, Aux, User/USB (*optional)

Sonar

  • Frequency : 750kHz (LF) / 1.2MHz (HF)
  • Range (max) : 120m (LF) / 40m (HF)
  • Range (min) :0.1m
  • Range Resolution : 4mm (LF) / 2.5mm (HF)
  • Update Rate (max) : 40Hz
  • Horizontal Aperture : 130° (LF) / 70° (HF)
  • Vertical Aperture : 20° (LF) / 12° (HF)
  • Number of Beams :512
  • Angular Resolution : 1° (LF) / 0.6° (HF)
  • Beam Seperation : 0.25° (LF) / 0.16° (HF)

Doppler Velocity Log (DVL)

  • Operating Frequency : 1000kHz
  • Long Term Accuracy : ±0.2% or ±1mm/s
  • Minimum Altitude : 1m
  • Maximum Altitude : 60m
  • Velocity Range : ±16m/s
  • Velocity Resolution : 1mm/s
  • Ping Rate : 4Hz
  • Beam Configuration : 4-beam Janus array, convex transducers
  • Beam Geometry : 1.5° beams, 65° down from horizontal (50° separation)

GNSS Receiver(s)

  • Satellite Constellations : GPS, GLONASS, BeiDou, Galileo
  • Receiver : 56 channel, L1 C/A code
  • Position Accuracy : 2.0m CEP (Circular Error Probability)
  • Acquisition : 26s (cold start), 1s (reacquisition)
  • Sensitivity : -167dBm (tracking), -148dBm (cold starts), -157dBm (warm starts)
  • Update Rate : 1Hz
  • Datum : WGS84

AHRS

  • Roll and Pitch Accuracy : <0.2° (medium dynamic conditions, no long term accelerations)
  • Yaw (Heading) Accuracy : 0.8° (clean magnetic environment, magnetic calibration performed)
  • Sensors : Tri-axial magnetometer, accelerometer and rate-gyroscope (MARG)
  • Sensor Bandwidth : 180Hz
  • Shock Resilience : 2000G for 0.3ms
  • Power Consumption : 0.44W

Water Sensor

  • Pressure (Depth) Accuracy : 0.1m
  • Water Temperature Accuracy : ±1°C

Camera (optional)

  • Dimensions : 25mm diameter x 55mm long
  • Construction : Titanium body, Sapphire glass viewport
  • Video Output : Colour PAL, 1.0Vp-p 75-ohm unbalanced composite
  • Video Resolution : 720×528 pixels (720p), 620 horizontal TV Lines
  • Minimum Illumination : 0.04 Lux
  • Signal to Noise : More than 50dB
  • Lens : 2.54mm
  • Focus : Fixed focus, wide angle
  • Depth of Field : 75mm to infinity
  • Field of View : Air: 80°(H) x 60°(V) x 102°(D), Water: 59°(H) x 44°(V) x 72°(D)

Dive-Light (optional)

  • Dimensions : 25mm diameter x 55mm long
  • Construction : Titanium, Sapphire glass viewport
  • Beam Pattern : 70° (Flood)
  • Light Output : 700 Lumens typical (in water), Cool White
  • Colour Temperature : 6500K to 8000K

Battery Pack

  • Dimensions : 65mm(D) x 285mm(L) excluding connector
  • Construction : Black Acetal Plastic
  • Chemistry : Nickle-Metal Hydride (NiMH)
  • Capacity : 9Ah typical (8.2Ah minimum), ~135Wh typical
  • Voltage : 16.8V (nominal)
  • Maximum Rated Output : 80W
  • Discharge Temperature Range : 0°C to +45°C
  • Charging Temperature Range : 10°C to +35°C
  • Charging Time : 4 hours from a fully discharged state
  • Operating Time : Minimum of 4 hours under full load conditions, 8 hours using low power sonar mode, 15 hours using navigation only (actual operating time depends on battery age, environmental temperature and charge state at the start of the dive)
  • FeaturesvIntegrated 80°C thermal cut-out, Thermistor controlled charging, Safety pressure relief valve.

Battery Charger

  • External Dimensions : 170mm x 170mm x 60mm (excluding cables)
  • Weight : 1.3kg
  • Mains Connector : 2 pin IEC 60320 C8 inlet – requires C7 connector power cord
  • Mains Input : 95-264V AC, 50-60Hz
  • Mains Fuse : 6A slow-blow 5x20mm glass cartridge
  • Charger Output : 55W
  • Environmental Rating : IP41 (do not get wet), Insulation Class 2 (II)
  • Features : Illuminated status LED – Orange, Yellow, Green (complete)

Transit Case

  • External Dimensions : 828mm long x 467mm wide x 280mm high
  • Construction : ABS and Polypropylene, ‘Gortex’ breather port
  • Environmental Rating : IP67
  • Weight : 6.4kg (when empty)

Navigation

  • Charting : Software supporets S-57 and S-63 electronics navigational chart (ENC) data (PC hardware ‘dongle’ supplied)