iMAR Navigation: iNAT-M200 Advanced MEMS based Navigation System for Air, Land and Sea

iNAT-M200 Advanced MEMS Based Navigation, Surveying & Control System (500 Hz)

Low Weight Small Size MEMS Based INS/GNSS

iNAT-M200 is a family of light weight small-size accurate MEMS based INS of class 0.5...10 deg/hr (AllanVariance bias stability), consisting of 3 robust MEMS gyro axes and 3 MEMS accelerometer axes, integrated GNSS Receiver (GPS, GLONASS, GALILEO, BEIDOU; L1L2 RTK), wheel sensor interface and an advanced 42+ state Kalman filter based INS/GNSS loosly or tightly or deeply coupled data fusion.


  • Applications: GNSS aided navigation (air, land, sea, subsea), attitude heading reference (AHRS), surveying, UAV, AUV and RPV guidance & control, dead-reckoning navigation etc.
  • Real-time data output: longitude, latitude, alttude / height, velocity, roll, pitch, yaw / heading, angular rates, acceleration, status, calibrated raw data INS/GNSS (for post-processing)
  • Interfaces: RS422 & RS232 (UART) Interfaces, CANaero / ARINC825 / CAN / CANopen, Ethernet (TCP/IP and UDP), SYNC-I/Os
  • Data output rate up to 500 Hz (each data log separately adjustable)
  • Minimum latency and minimum jitter on data output
  • Measurement range:
    iNAT-M200/S~N: +/-400 deg/s, +/-10 g
    iNAT-M200/S~C: +/-450 deg/s, +/-18 g
    iNAT-M200/M~I: +/-250 deg/s, +/-8g

  • Inertial Sensor Performance:

    Heading accuracy:
    iNAT-M200/S~N: 0.1 deg (GNSS aided)
    iNAT-M200/S~C: 0.3 deg (GNSS aided)
    iNAT-M200/M~I: 0.5 deg (GNSS aided)
    if the dual-antenna GNSS option is equipped: 0.2 deg at 2 m baseline, 0.1 deg at 4 m baseline

    Attitude accuracy:
    iNAT-M200/S~N: < 0.03 deg (GNSS aided)
    iNAT-M200/S~C: < 0.1   deg (GNSS aided)
    iNAT-M200/M~I: < 0.3   deg (GNSS aided)

    Position accuracy GNSS-L1L2 aided < 1.8 m (rms) [S/A off]
    Position accuracy GNSS aided 0.05 m (rms) [RTK available and sufficient GNSS conditions]

    Noise / ARW:
    iNAT-M200/S~N: 0.15 deg/sqrt(hr) / 60 µg/sqrt(Hz)
    iNAT-M200/S~C: 0.26 deg/sqrt(hr) / 70 µg/sqrt(Hz)
    iNAT-M200/M~I: 0.015 deg/s/sqrt(Hz) / 1 mg/sqrt(Hz)

    Bias stability (AV):
    iNAT-M200/S~N: < 0.5 °/hr, 0.3 mg @ const. temp.
    iNAT-M200/S~C: < 6 °/hr, 2 mg @ const. temp.
    iNAT-M200/M~I: < 10 deg/hr, 2 mg @ const. temp.

  • Integrated 42+ state tightly or loosley or deeply coupled data fusion
  • Internally up to 32 GByte non-volatile memory for data storage
  • Dual-antenna GNSS Version available as option to support heading determination also during initial standstill condition.
  • Connectors: MIL-C-38999 III type and TNC / M12
  • Power Supply: 9...34 V DC, < 8 W. iNAT provides two independent and isolated inputs to allow the supply from two different power sources - the iNAT always takes the energy from those supply with the highest voltage. The inputs are protecxted against reverse voltage and over-voltage.
  • Weight: approx. 800 grams
  • EMI-EMC protection designed to MIL-STD-704F / MIL-STD-461G / MIL-STD-810G
  • Overvoltage protection
  • Modular system architecture: customized applications can be integrated by iMAR easily (please contact our sales engineers for details and the SDK). So the iNAT can provide arbitrary data and command protocols according to customer requirement, e.g. to substitute other navigation systems by iNAT (e.g. for Form-Fit-Function replacements).
  • Enough computation power on-board available to integrate customized applications on request.
  • iNAT-M200 is neither ITAR nor export controlled.
  • iNAT-SLx: Version with high performance GNSS engine and loosely coupled INS/GNSS/ODO data fusion
  • iNAT-STx: Version with high performance GNSS engine and tightly coupled INS/GNSS/ODO data fusion
  • iNAT-MLx: Version with high economic GNSS engine and loosely coupled INS/GNSS/ODO data fusion
  • iNAT-MTx: Version with high performance GNSS engine and tightly coupled INS/GNSS/ODO data fusion
  • x = N: high performance MEMS sensors integrated
    x = C: mid performance MEMS sensors integrated
    x = I: commercial grade MEMS sensors integrated


Further information:

Datasheet iNAT-M200/S~N and iNAT-M200/M~N

Datasheet iNAT-M200/S~C and iNAT-M200/M~C

Datasheet iNAT-M200/S~I and iNAT-M200/M~I

Datasheet iNAT-M200-FLAT OEM Version

Datasheet iATTHEMO-M  True North Dual Antenna INS/GNSS for Marine and Naval Applications

iXCOM-CMD: Easy-to-use software (GUI) to operate iNAT systems (incl. powerful wizard)


Report: iNAT-M200/SLN for Trainer Aircrafts (2016)

Publication in SENSORS 2017: INS/GNSS Integration for Aerobatic Flight Applications and Aircraft Motion Surveying using iNAT-M200

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