SPRINT-Nav U
Overview
Small in size, mighty in performance
The class-leading capabilities and performance of SPRINT-Nav navigators are now available for all your marine robotic operations, no matter the size of your platform.
Designed from over a decade’s experience gained across the SPRINT-Nav family of products, SPRINT-Nav U is the world’s smallest hybrid acoustic-inertial navigator. SPRINT-Nav U has been designed to address a clear market need for smaller platforms to provide accurate, precise and robust guidance and navigation.
Find out what's possible
As with all SPRINT-Nav products, SPRINT-Nav U fuses AHRS, DVL, INS and depth data. All of this is now available in a single, ultra-compact and lightweight instrument giving you fast, precise and robust navigation, guidance and control information.
SPRINT-Nav U surpasses expectations in every way. With fast alignment, one unit, one connector, one cable and all the true-north seeking capabilities found across the SPRINT-Nav Family.
Game changing new capabilities for small robotic operations
Measuring just 134 mm in height and 114 mm in diameter and weighing a mere 600 grams in water, SPRINT-Nav U packs full SPRINT-Nav capability into the space traditionally filled by just a DVL on small subsea robotic platforms. With its compact fibre optic gyro (FOG) Inertial Measurement Unit (IMU) SPRINT-Nav U is a game changer for small vehicle operations.
It’s powered by the same trusted hybrid acoustic-inertial navigation algorithm you’ll find across the whole SPRINT-Nav family. This combines the strengths of all its sensors to provide robust, precise and accurate outputs. SPRINT-Nav U continues to work even in ferrous environments where Micro-Electro-Mechanical Systems (MEMS) based navigation, with its magnetic heading, struggles. This means your operations are provided with a continuous stream of positions, orientation, velocities, depth and altitude even when operating in and around infrastructure.
Ready, set, go
Your SPRINT-Nav U arrives pre-calibrated, meaning there is no need to spend valuable time conducting in-field calibration manoeuvres every time a vehicle is mobilised. It’s the fastest aligning subsea navigator available in the market. Arrive on site, turn it on, give it a position and away you go.
SPRINT-Nav U uses the same, familiar and simple web user interface as the SPRINT-Nav Mini, meaning its already user tested, field proven and has ease of use built in. As is standard for SPRINT-Nav products, the output can be fed directly to your own (or a third party) user interface or vehicle control software.
Need to do an ROV inspection of your offshore energy structures or ports and harbour infrastructure without deploying a large-scale vessel? SPRINT-Nav U will ensure accurate and continuous survey grade navigational data that is unaffected by the materials in such structures.
Conducting a seabed survey with your small AUV, Towfish or USV? No longer worry about the quality of the data you’ll get back as SPRINT-Nav U provides unparalleled navigational inputs for GNSS denied small vehicles and their payload sensors for accurate data collection every time.
Carrying out multiple surveys across a wide area? SPRINT-Nav U’s compact size and weight make it easily man-portable, deployable and retrievable from the back deck of a larger vessel.
SPRINT-Nav U at a glance
- 134 mm tall by 114 mm in diameter; the industry’s smallest all-in-one hybrid acoustic-inertial subsea navigator
- Compact hybrid DVL-INS synergies dramatically improve both robustness and performance compared with standalone instruments.
- Fly higher – 500 kHz DVL maintains bottom lock at up to 100 m altitude
- Four instruments in one small package; AHRS, DVL, INS and pressure sensor – huge capability at optimised cost, size, weight and power (CSWaP)
- Easy to integrate, simple to operate, web UI for configuration
General
• Ideally suited for small subsea vehicle guidance, control and navigation
• Size, weight and power optimised
• Powered by our class-leading SPRINT hybrid navigation engine
• More compact and cost effective than the four separate sensors
• Gyrocompass simplicity with hybrid acoustic-inertial navigation performance
• Unaffected by proximity to ferrous objects
• Factory calibrated
Design
• Ultra-compact – 134 (H) x 114 (Dia) mm
• 1.98kg weight in air, 0.6kg weight in water
• Water-blocked cable
• Subconn micro circular connector (8-way female)
• Acetal copolymer 300m depth-rated housing
Performance
• True north seeking
• Provides 0.1% error for distance travelled (typical survey)
• Heading accuracy 0.15° secant latitude
• 0.02° pitch/roll accuracy
• 0.3/100 m min/max altitude
• Fast alignment
Ownership
• What’s in the box: SPRINT-Nav U
• Warranty: 1 year return to Sonardyne service centre
• ITAR controlled: No
• UK export licence: Yes
Specifications Table
| Performance | SPRINT-Nav U | |
|---|---|---|
| DVL aided | Typical survey | 0.1% |
| Distance from origin | 0.45% | |
| Altitude min/max | 0.3/100 m | |
| USBL and DVL aided | Precision improvement | Up to 4x |
| Heading (secant latitude) with GNSS or USBL, and DVL | 0.15 | |
| Heading (secant latitude) with GNSS or USBL or DVL | 0.2 | |
| Roll and pitch | 0.02 | |
| Angular rate range | ±450/s | |
| Velocity precision (<2 m/s at 50 m altitude) | <1.0 cm/s | |
| Depth accuracy | 0.01% FS | |
| ADCP | Profiling range | 0.4-50 m |
| Velocity range and RMS (along beam) | Up to ±6.7 m/s ±0.4% of measured value | |
| Maximum number of cells | 255 | |
| Max ping rate | 1 Hz | |
| Power | ||
| Power requirements | 24 V dc ±10%, 8 W nominal | |
| Physical/Comms | ||
| Data storage | 32 GB internal memory | |
| Serial ports/protocol | 1 RS232 (available on cable but not Subconn MCIL8F) | |
| Interfaces | Ethernet, UDP/TCP, WebUI, 1 x trigger inputs/output (1PPS in/out or DVL trigger), NTP, ZDA out | |
| Mechanical construction | POM-C, titanium | |
| Dimensions (diameter x height) | 134 x 114 mm (excluding penetrator) | |
| Weight air/water | 1.98/0.60kg | |
| Environmental | ||
| Depth rating | 300 m | |
| Operating temperature | -5 to 40 degrees Celsius | |
| Storage temperature | -25 to 70 degrees Celcius |
