iPRENA and iPRENA-M: Precision Navigation and Weapon Alignment (0.3 mil sec lat, RLG, ITAR-free)

High Performance Low Weight INS (RLG based, no ITAR)


The iPRENA and iPRENA-M families are a series of light weight, small-size, high accurate INS/GNSS systems, consisting of 3 high highly reliable ring laser gyro axes and 3 servo accelerometer axes, integrated multi-constellations / multi-frequencies GNSS Receiver (GPS, GLONASS, GALILEO, BEIDOU; SBAS), vehicle motion sensor (VMS) interface and an advanced 42+ state Kalman filter based INS/GNSS sensor data fusion.

Three performance classes down to 0.3 mrad sec lat true north gyro compassing capability are available. 

With iPRENA-M-II / -III / -IV additionally a gun-fire hardened version is available.


  • Applications: GNSS aided navigation, free inertial Navigation (air, land, sea, subsea), attitude heading reference (AHRS), surveying, UAV, AUV and RPV guidance & control
  • Real-time data output: longitude, latitude, alttude / height, velocty, roll, pitch, yaw / heading, angular rates, acceleration, status, calibrated raw data INS/GNSS (also for post-processing applications)
  • Interfaces: RS422 (UART and HDLC / SDLC) Interfaces, CANaero / ARINC825 / CAN, ARINC429, Ethernet (TCP/IP and UDP), SYNC-I/Os
  • Data Output rate up to 400 Hz (each data log separately adjustable)
  • Measurement range +/-400 deg/s, +/- 40 g
  • Heading accuracy with Gyro Compassing (pure inertial): 0.3 mil / 1.0 mil / 1.5 mil sec lat
  • Attitude accuracy: < 0.1 mil
    Position accuracy in free inertial mode: < 0.5 nm/hr / < 1 nm/hr / 1.5 nm/hr
       (after > 12 hr GNSS aiding with sufficient motion: down to 1 n/m / 24 hr)
    Position accuracy, GNSS aided: < 2 m (rms) [S/A off]
    Position accuracy, GNSS aided: 0.02 m (rms) [RTK available]
  • Bias over temperature 0.002 ... 0.007 deg/h / 50 ... 100 µg 
    Noise / ARW 0.0016 ... 0.005 deg/sqrt(hr) / 12 µg/sqrt(Hz) 
    Bias stability (AV) < 0.001 °/hr, 12 µg @ const. temp.
    See datasheet for further accuracy classes. Integrated 42+ state tightly or loosly coupled data fusion
  • internal GNSS receiver, up to all frequencies / all constellation GPS+GLONASS+Beidou+GALILEO; RTK / PPP or/and SAASM / M-Code as option
  • Internally up to 128 GByte non-volatile memory for data storage
  • extreme high reliability: IMU MTBF (field demonstrated data): 120'000 hrs 
  • Power Supply: 10...32 V DC, < 30 W
  • Modular System architecture: customized applications can be integrated by iMAR on request (please contact our sales department for details). So the iPRENA can provide arbitrary data and command protocols according to customer requirement, e.g. to substitute other navigation systems by iPRENA (e.g. for Form-Fit-Function replacements)
  • Gun-fire hardened version available: iPRENA-M-II /-III / -IV
  • EMI-EMC protection and qualification according to DO160G / MIL-STD-704F / MIL-STD-461G / MIL-STD-810G
  • iPRENA-(M)-II / -III / -IV are not ITAR controlled and handled as dual-use equipment for export control.


Further information:

Datasheet iPRENA-II...IV / iPRENA-M-II...IV Precision Navigation for Defense Applications (RLG; ITAR-free; iPRENA-M: enclosure compatible to MAPS / DRU, optional with integrated gun-fire shock absorbers)

Datasheet iPRENA-V Precision Navigation for Defense Applications (RLG, partially ITAR restricted)

Datasheet iPRENA-M-H Precision Navigation for Defense Applications (DRU / MAPS replacement; ITAR restricted)

Weitere Informationen

Datasheets: iPRENA and iPRENA-M

Im Download-Bereich findet man Handbücher, Berichte von Anwendern und weitere Informationen.

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