Sonardyne SPRINT-Nav

Description

The Sonardyne SPRINT-Nav is an all-in-one hybrid navigation instrument for subsea vehicles and survey operations. It combines inertial sensors, a Syrinx Doppler Velocity Log (DVL) and a high accuracy pressure sensor in a single titanium housing. The DVL is available in two frequencies: 600 kHz (standard) or 400 kHz High Altitude (HA).

The SPRINT-Nav provides dual concurrent AHRS, INS and DVL output, so one instrument can, for example, supply AHRS plus DVL for ROV piloting and INS plus DVL for survey at the same time. The INS initialises instantly from the on-board AHRS with no alignment procedure, and the dual AHRS and INS algorithms enable an internal health check of orientation. The unit is supplied pre-calibrated. Each DVL transducer has a depth-rated water block, and with beam-level aiding the SPRINT-Nav continues to function if one DVL transducer is damaged.

The series comprises SPRINT-Nav 300, 500, 700 and X. DVL-aided typical survey performance (CEP50) is 0.04 % for the 300, 0.02 % for the 500 and 0.01 % for the 700 and X, and INS heading (secant latitude) is 0.05°, 0.04°, 0.02° and 0.01° respectively. Altitude min/max is 0.4/175 m as standard or 0.4/230 m with the High Altitude option, and roll and pitch is 0.01° for all models.

The SPRINT-Nav runs on 20–50 V DC (15 W nominal, 35 W maximum) with a Li-ion internal battery backup for 5 minutes, and has 8 GB internal memory, 4 × RS232 or RS485 serial ports, Ethernet and 4 triggers. It is available rated to 4000 m (240 × 395 mm, 23.9 kg in air, 13.1 kg in water, estimated) or 6000 m (240 × 405 mm, 28.1 kg in air, 17.2 kg in water, estimated). Typical applications are AUV, AIV, ROV, towfish and ROTV, autonomous and resident vehicles, and survey and construction.

Technical Specification

Models

SPRINT-Nav 300, SPRINT-Nav 500, SPRINT-Nav 700, SPRINT-Nav X

Integrated sensors

Inertial sensors, Syrinx DVL, high accuracy pressure sensor

DVL frequency

600 kHz (standard) or 400 kHz (High Altitude, HA)

DVL aided, typical survey (CEP50)

0.04 % (300), 0.02 % (500), 0.01 % (700), 0.01 % (X)

DVL aided, distance from origin (CEP50)

0.12 % (300), 0.07 % (500), 0.05 % (700), get in touch (X)

DVL aided, High Altitude (HA) option (CEP50)

0.12 % (300), 0.08 % (500), 0.06 % (700), get in touch (X)

Unaided

1.2 m in 60 s (300), 0.8 m in 60 s (500), 0.5 m in 60 s (700), get in touch (X)

Altitude min/max, standard

0.4/175 m

Altitude min/max, High Altitude (HA) option, 400 kHz

0.4/230 m

USBL & DVL aided precision improvement

Up to 7× better (300), up to 10× better (500), up to 13× better (700), up to 13× better (X)

Station keeping

<1 m over 24 hours

LBL/DVL aided

3 cm confined area, 20 cm wide area (dynamic)

INS heading (secant latitude)

0.05° (300), 0.04° (500), 0.02° (700), 0.01° (X)

AHRS heading (secant latitude)

0.20° (300), 0.10° (500), 0.08° (700), 0.08° (X)

AHRS/INS roll and pitch

0.01° (all models)

Pressure sensor

0.01 % FS, removable module

ADCP profiling range

0.4–80 m (standard, 600 kHz), 0.4–120 m (HA, 400 kHz)

ADCP velocity range and RMS (along beam)

Up to ±11.2 m/s, ±0.4 % of measured value

ADCP maximum number of cells

255

Maximum ping rate

4 Hz (ADCP) or 2.5 Hz (DVL + ADCP)

Power requirements

20–50 V DC, 15 W nominal, 35 W maximum

Internal battery backup

Li-ion, 5 minutes

Data storage

8 GB internal memory

Serial ports/protocol

4 × RS232 or RS485

Other ports

Ethernet, 4 triggers

Mechanical construction

Titanium

Dimensions (diameter × height, incl. connectors and mounting ring), 4000 m

240 × 395 mm

Dimensions (diameter × height, incl. connectors and mounting ring), 6000 m

240 × 405 mm

Weight in air/water, 4000 m (estimated)

23.9/13.1 kg

Weight in air/water, 6000 m (estimated)

28.1/17.2 kg

Mounting holes (drawing)

8 × Ø6.1 thru on Ø228 pitch; 4 × Ø8.1 thru on Ø224 pitch

Depth rating

4000 m or 6000 m

Operating temperature

−5 to 50 °C

Storage temperature

−25 to 55 °C

Export control

Not ITAR controlled

Typical applications

AUV, AIV, ROV, towfish and ROTV; autonomous and resident vehicles; survey and construction

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