| Brand |
Sonardyne International Ltd |
| Name of Product: |
Lodestar |
| Height [cm]: |
subsea=37.5 surface=27.5 |
| Width [cm]: |
subsea=20.5 surface=21.4 |
| Length [cm]: |
subsea=20.5 surface=28.4 |
| Weight [kg]: |
14kg (1000m), 22kg (3000m) 39kg(5000m), 13kg(surface) |
| Voltage range [DC.AC]: |
20 – 50V DC for subsea and surface. Mains option for surface unit (90-260VAC 50/60Hz). |
| Power consumption, normal operation (Watts): |
15W |
| Water-resistance or splashproof casting: |
1000m,3000m,5000m and surface options |
| Operating temperature: |
-10 to +55C |
| Mean time between failure (MTBF, hours): |
>300,000hrs (inertial sensors) |
| Type of accelerometer |
Force-feedback pendulous (Q-flex) |
| Type of gyro |
Ring Laser Gyro (RLG) |
| Removable from base plate (Y/N) |
Y |
| Shock Tolerance (g): |
22g |
| Operating Temperature (°C): |
-10 to +55C |
| Altitude Operational Limits: |
no physical limits |
| maximum rotation speed (deg/s) |
>500deg/s |
| NMEA: |
GGA, GLL, ZDA, VTG, ACK, PRDID, PHTRO, HDT, THS, MDL, TEMP, TXT, ALR |
| Other: |
TSS1, TSS2, TSS3, EM1000, EM3000 |
| Heading (deg): |
0.05 (secLat, AINS) |
| Pitch/roll (deg) : |
0.01 |
| Heave (m): |
5% or 5cm, 2% or 2cm delayed 1 minute |
| Increase in position accuracy w.r.t stand-alone GPS (95%, m): |
Removes GPS outliers, high frequency noise and short term gaps |
| Heading (deg): |
0.10 (secLat) |
| Pitch/roll (deg) : |
0.01 |
| Heave (m): |
5% or 5cm |
| Heading (deg): |
0.05 (secLat) |
| Pitch/roll (deg) : |
0.01 |
| Heave (m): |
< 2 cm |
| Decrease of position accuracy (95%, m/hour): |
3 m/hour, typical operation |
| Heading (deg): |
0.10 (secLat), moderate dynamics or stationary |
| Pitch/roll (deg) : |
0.01 |
| Heave (m): |
5% or 5cm |
| Decrease of position accuracy (95%, m/hour): |
< 2.5 NMPH, higher performance possible subject to specific application |
| accelerometer bias (micro-g): |
<50uG |
| gyro bias (deg/hour): |
<0.01 deg/hour |
| Calibration procedure: |
Non return to factory calibration procedure supported. |
| Filter strength manually adaptable (Y/N): |
Y |
| Input signals manually adaptable (Y/N): |
Y |
| Integrity monitoring of position input (Y/N): |
Y |
| Integrity monitoring of log input (Y/N): |
Y |
| Maximum number of position input signals: |
4 |
| Maximum number of log input signals: |
1 |
| Maximum latency of position input (ms): |
10 sec |
| Maximum latency of log input (ms): |
2 sec |
| Accuracy indicators given in output: |
1DRMS, 1sigma RMS, error ellipse, etc |
| Accuracy of time stamp for output (ms): |
1.0 uSec |
| Graphical user interface (Y/N): |
Y |
| Typical application (max. 20 words): |
Acoustical Aided INS for high accuracy survey, subsea metrology and DP. IMO certified AHRS. |
| Main benefits in using your system (max. 20 words): |
Customised for reliable use in commercial marine applications and for optimal integration with acoustic positioning systems. |
