The STIM300 is a Micro Electromechanical System (MEMS) Inertial Measurement Unit (IMU) from Sensonor. It features low noise gyros and accelerometers in a small, lightweight, environmentally sealed enclosure. The STIM300 enables precision measurements for applications that require low cost, high performance and rugged durability in a very small form factor. When integrated with NovAtel's Synchronous Position, Attitude and Navigation (SPAN) technology, this IMU is ideal for airborne and ground applications that require accurate 3D position, velocity and attitude (roll, pitch and azimuth) data.


  • Low noise commercial grade gyros and accelerometers
  • Small size and lightweight
  • 10-30 VDC power input1
  • 125 Hz data rate
  • Long MTBF
  • SPAN INS functionality


  • Tactical grade IMU performance
  • Commercially exportable IMU
  • Ideal for size constrained applications
  • Easy to integrate with SPAN GNSS receivers
  • Ideal for airborne, ground and marine applications


General Info Length (mm) 39.00
  Width/Diameter (mm) 45.00
  Height (mm) 22.00
  Weight (g) 55.00
Gyro Type MEMS  
Performance Gyro Input Range 400 deg/sec
  In-run Gyro Rate Bias Stability 0.5 deg/hr
  Angular Random Walk 0.15 deg/√hr
  Accelerometer Range 10 g
  In-run Accelerometer Bias Stability
0.05 mg


About SPAN: Tightly-Coupled GNSS +INS Technology

SPAN technology brings together two different but complementary technologies: Global Navigation Satellite System (GNSS) positioning and Inertial Navigation Systems (INS). The absolute accuracy of GNSS positioning and the stability of IMU measurements combine to provide an exceptional 3D navigation and attitude solution that is stable and continuously available, even through periods when satellite signals are blocked.

Combining SPAN and MEMS Technology

A proprietary NovAtel MEMS Interface Card (MIC) couples the STIM300 with SPAN receiver cards, offering a unique, powerful GNSS+INS system for weight and size constrained applications. Designed as a board stack configuration for ease of integration, the MIC interfaces directly with NovAtel's small form factor OEM615™ SPAN receiver.

Require Higher Accuracy?

SBAS can be used to improve real-time performance and accuracy. For more demanding applications, Inertial Explorer® post-processing software from our Waypoint® Products Group offers the highest level of accuracy.