Description
SPRINT INS interfaces to aiding sensors such as USBL, a DVL, pressure sensor and sound speed. Power-pass through to aiding sensors is supported to ease integration. SPRINT INS can be operated without external time synchronisation and aided with manual positions and DVL for relative navigation. SPRINT has a proven track record spanning 10 years in the field in diverse applications from vehicle gyrocompass to demanding applications such as ROV guidance and mid water station keeping. The instrument is available in 4,000 and 6,000 metre depth ratings and is one of the smallest form factor subsea inertial instruments available.
Specifications
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Other specifications
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Graphical user interface
Y
Typical application
Subsea vehicle inertial navigation
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]
900
Min. operating temperature [Ā°C]
-20
Max. operating temperature [Ā°C]
55
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Software
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Name
SPRINT
Filtering
Y
Adaptable filter strength
Yes
Adaptable input signals
Y
Integrity monitoring of position input
Y
Integrity monitoring of log input
Y
Max. number of position input signals
3
Max. number of log input signals
1
Maximum latency of position input [ms]
10000
Uncertainty indicators given in output
std. dev
Uncertainty of time stamp for output [ms]
0.001
-
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
-
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]
0.26
Width [m]
0.205
Weight [kg]
18.5
Power consumption [W]
15
Splashproof casting
Y
Water resistant casting
Y
Water resistance [m]
6000
Type of accelerometer
Closed-loop (force feedback) Q-Flex
Type of gyro
Ring Laser
Removable from base plate
Y
Type of application
Marine
Moving parts
N
-
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
-
GNSS Positioning Sensor
-
Number of integrated GNSS receivers and antenna ports
0
-
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
RTCM
N
Other
binary and ASCII messages
-
Inertial Measurement Unit
-
Accelerometer bias [Āµ-g]
200
gyro bias [deg/hr]
0.0035
Calibration procedure
IMU is factory calibrated - no user calibration required. DVL calibration procedure supplied