| Brand |
iMAR GmbH, Germany |
| Name of Product: |
iNAV-RQH-10018 |
| Year of initial development: |
2004 |
| Height [cm]: |
178 |
| Width [cm]: |
213 |
| Length [cm]: |
330 |
| Weight [kg]: |
9.5 |
| Voltage range [DC.AC]: |
10-34 DC |
| Power consumption, normal operation (Watts): |
35 |
| Water-resistance or splashproof casting: |
IP68 |
| Operating temperature: |
-40…+71°C |
| Mean time between failure (MTBF, hours): |
25000 |
| Type of accelerometer |
servo |
| Type of gyro |
ring laser gyro (RLG) |
| Removable from base plate (Y/N) |
Y |
| Shock Tolerance (g): |
60 |
| Operating Temperature (°C): |
-40…71°C |
| Altitude Operational Limits: |
40'000 ft |
| maximum rotation speed (deg/s) |
400 |
| NMEA: |
Y |
| RTCM: |
Y |
| Other: |
RTK (!) |
| GPS aided mode |
2 cm |
| Heading (deg): |
0.01 (RTK/GPS aided), 0.025 deg sec Lat) free inertial |
| Pitch/roll (deg) : |
<0.01 |
| Heave (m): |
< 5 cm / < 5 % (realtime); < 3 cm / 2.5 % (postproc) |
| Surge/sway (m): |
< 2 cm (with RTK) |
| Increase in position accuracy w.r.t stand-alone GPS (95%, m): |
1 m (< 25 µg bias stability after sufficient GPS aiding) |
| Heading (deg): |
0.025 deg sec lat (no GPS) |
| Pitch/roll (deg) : |
< 0.01 |
| Heave (m): |
< 5 cm / < 5 % (realtime); < 3 cm / 2.5 % (postproc) |
| Surge/sway (m): |
< 2 cm (with RTK) |
| Decrease of position accuracy (95%, m/hour): |
depends on EM-Log error and current stability |
| Heading (deg): |
0.025 deg sec lat (no GPS) |
| Pitch/roll (deg) : |
< 0.01 |
| Heave (m): |
< 5 cm / < 5 % (realtime); < 3 cm / 2.5 % (postproc) |
| Surge/sway (m): |
< 2 cm (with RTK) |
| Decrease of position accuracy (95%, m/hour): |
7.2 m / hr; depends on Doppler-Log error and current stability - assumption: 0.2 %, speed = 1 m/s |
| Heading (deg): |
0.025 deg sec lat (no GPS) |
| Pitch/roll (deg) : |
< 0.01 |
| Heave (m): |
< 5 cm / < 5 % (realtime); < 3 cm / 2.5 % (postproc) |
| Surge/sway (m): |
short-time dynamic: centimeter range; long-time: Schuler oscillation: 0.3 nm/hr |
| Decrease of position accuracy (95%, m/hour): |
0.3 nm/hr (Schuler oscillation) |
| accelerometer bias (micro-g): |
25 |
| gyro bias (deg/hour): |
0.002 (stable over temp. and also over temp. gradient) |
| Calibration procedure: |
recommended all 2 years for surveying equipment |
| Name: |
iMAR KFNAV |
| Filters applied: |
Kalman filter |
| 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: |
GPS / exernal (acoustic) |
| Maximum number of log input signals: |
Doppler (e.g. RDI), and customized |
| Maximum latency of position input (ms): |
3.3 |
| Maximum latency of log input (ms): |
1.5 sec acceptable, if time stamped properly |
| Accuracy indicators given in output: |
StdDev |
| Accuracy of time stamp for output (ms): |
0.001 |
| Graphical user interface (Y/N): |
Y |
| Typical application (max. 20 words): |
surveying, stabilization (including servo motor control as option) |
| Main benefits in using your system (max. 20 words): |
no fiber optic gyros, low and constant bias also over full temperature range, exceptional accurate gyro scale factor |
| Units sold |
approx. 250 in all areas (subsea, surface, aircraft, rail) |
