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SPRINT-Nav 500


 
General 
Product Name:SPRINT-Nav 500
Product 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.
Type of application:Marine
Year of initial development:
Height [m]:0.395
Width [m]:0.205
Length [m]:
Weight [kg]:23.9
Min. Voltage (AC):
Max. Voltage (AC):
Min. Voltage (DC):24
Max. Voltage (DC):
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
Moving parts:N
Environmental 
Non-operating shock tolerance [g]:22
Operating shock tolerance [g]:10
Min. operating temperature [C]:-10
Max. operating temperature [C]:55
Max. rotation speed [deg/s]:500
Data formats 
NMEA formats:GGA; GLL; ZDA; VTG; ACK; HDT; THS; TXT; ALR
RTCM:
Other :binary and ASCII messages
GNSS Positioning Sensor 
Number of integrated GNSS receivers and antenna ports:
No. channels p receiver:
Tracked satellite signals:
SBAS differential signals:
RTK Network Compatibility:
Update rate [ Hz ]:
Cold start [ seconds ]:
Hot start [ seconds ]:
GNSS positional accuracy 
Horizontal Position Accuracy [ RMS in cm ] :
Horizontal Position Accuracy (SBAS) [ RMS in cm ]:
Horizontal Position Accuracy (RTK) [ RMS in cm ]:
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
Increase in position uncertainty w.r.t. stand-alone GPS [m]:
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
Decrease in position accuracy [m/hr]:
Doppler log aided uncertainty 
Heading [deg]:0.1
Pitch [deg]:0.01
Roll [deg]:0.01
Heave [m]:0.02
Surge/sway [m]:
Decrease in position accuracy [m/hr]:3
Unaided uncertainty 
Heading [deg]:0.1
Pitch [deg]:0.01
Roll [deg]:0.01
Heave [m]:0.05
Surge/sway [m]:
Decrease in position accuracy [m/hr]:0.3
Inertial Measurement Unit 
Accelerometer bias [µ-g]:200
gyro bias [deg/hr]:0.01
Calibration procedure:IMU is factory calibrated - no user calibration required.
Software 
Name:
Filtering:
Adaptable filter strength:
Adaptable input signals:
Integrity monitoring of position input:
Integrity monitoring of log input:
Max. number of position input signals:
Max. number of log input signals:
Maximum latency of position input [ms]:
Maximum latency of log input [ms]:
Uncertainty indicators given in output:
Uncertainty of time stamp for output [ms]:
Other specifications 
Export restrictions:US Commerce controled
Graphical user interface:Y
Typical application:
Distinguishable features:Customised for reliable use in commercial marine applications and for optimal integration with acoustic positioning systems.
 


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