SPRINT-Nav 500
SPRINT-Nav provides all-in-one navigation for subsea vehicles and survey operations by combining solid state dual Attitude Heading Reference System (AHRS) and Inertial Navigation System (INS) (and optional Lodestar AHRS only), a Syrinx Doppler Velocity Log (DVL) and a high accuracy pressure sensor in a single housing.
Sonardyne International
Yateley, GB
Description
SPRINT-Nav provides all-in-one navigation for subsea vehicles and survey operations by combining solid state dual Attitude Heading Reference System (AHRS) and Inertial Navigation System (INS) (and optional Lodestar AHRS only), a Syrinx Doppler Velocity Log (DVL) and a high accuracy pressure sensor in a single housing. The result is one of the smallest combined inertial navigation instruments on the market. All onboard sensors are optimally integrated to provide seamless operation and unprecedented levels of performance compared with standalone instruments from different vendors. The unit requires no calibration for all but the most demanding applications with ultra-tight mechanical alignment. SPRINT-Nav’s inertial dual AHRS & INS algorithm capability is unique in the market and allows for automatic on-board integrity checking between algorithms and instantaneous INS start up with North alignment from the on-board AHRS. This capability allows for simultaneous use from one instrument, e.g. AHRS plus DVL for ROV piloting, INS plus DVL for survey operations. Tight beam-level DVL aiding for the on-board INS with optimal timing and use of proprietary QC metrics provides higher performance and more reliable navigation in demanding bottom-lock environments. Export of SPRINT-Nav is simplified as compared to other separate DVL and INS units. For example, shipping from outside the USA does not require a re-export licence. Each DVL transducer is fitted with a full depth rated water block to ensure protection of the internal components. SPRINT-Nav can be interfaced via a single connection and/or the internal sensors can be interfaced separately depending on requirements. Continuous on-board data storage supports post-mission diagnostics and post-processing.
Specifications
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Other specifications
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Graphical user interface
Y
Distinguishable features
Customised for reliable use in commercial marine applications and for optimal integration with acoustic positioning systems.
Export restrictions
US Commerce controled
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Environmental
-
Non-operating shock tolerance [g]
22
Operating shock tolerance [g]
10
Max. rotation speed [deg/s]
500
Min. operating temperature [°C]
-10
Max. operating temperature [°C]
55
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Doppler log aided uncertainty
-
Heading [deg]
0.1
Pitch [deg]
0.01
Roll [deg]
0.01
Heave [m]
0.02
Decrease in position accuracy [m/hr]
3
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GNSS aided uncertainty
-
Heading [deg]
0.04
Pitch [deg]
0.01
Roll [deg]
0.01
Heave: constant part [m]
0.05
Heave: variable part [%]
5
Surge/sway [m]
0.05
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General
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Height [m]
0.395
Width [m]
0.205
Weight [kg]
23.9
Min. Voltage (DC)
24
Power consumption [W]
15
Splashproof casting
Y
Water resistant casting
Y
Water resistance [m]
6000
Mean time between failures [hr]
400000
Type of accelerometer
Closed-loop (force feedback) Q-Flex
Type of gyro
Ring Laser Gyro (RLG)
Removable from base plate
Y
Type of application
Marine
Moving parts
N
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EM log aided uncertainty
-
Heading [deg]
0.1
Pitch [deg]
0.01
Roll [deg]
0.01
Heave [m]
0.05
Surge/sway [m]
0.05
-
Unaided uncertainty
-
Heading [deg]
0.1
Pitch [deg]
0.01
Roll [deg]
0.01
Heave [m]
0.05
Decrease in position accuracy [m/hr]
0.3
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Data formats
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NMEA formats
GGA; GLL; ZDA; VTG; ACK; HDT; THS; TXT; ALR
Other
binary and ASCII messages
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Inertial Measurement Unit
-
Accelerometer bias [µ-g]
200
gyro bias [deg/hr]
0.01
Calibration procedure
IMU is factory calibrated - no user calibration required.
