Sigma 95 Inertial Navigation Unit

Inertial reference unit for combat aircrafts

Combat proven, the Sigma 95 inertial and hybridized navigation system family ensures the required performance and accuracy for the most advanced military fighters, combat helicopters, UAVs and tactical aircraft.

High Performance & Accuracy
Optimized alignment capabilities
Modular & versatile interfaces

ADVANTAGES

Highly Modular

Thanks to its versatile interfaces and open architecture, Sigma 95 family can integrate all available sensors such as GPSGlobal Positioning System is a navigation satellite system. See also, Glonass, air data system, etc. It combines all the advantages of a SwaP optimized hybrid inertial navigation system in a single LRU.
Sigma 95L – Compact & Hybridized Navigation System

With its optimal performance/mass trade-off, Sigma 95L inertial navigation system provides military helicopters, tactical aircraft and UAVs with navigation performance, accuracy and flexibility in a single LRU. Based on ring laser gyrometers as well as on its embedded GPS receiver combined with a powerful multimode Kalman filter, Sigma 95L optimizes its alignment capabilities.
Sigma 95N – High-Grade Inertial & Hybridized Navigation System

Designed for the most advanced military aircraft, Sigma 95N provides high-grade navigation performance and accuracy, even in GNSS-denied environments. Based on highly accurate ring laser gyros, Sigma 95N also integrates an embedded GPS/GLONASS receiver combined with a powerful multimode Kalman filter.

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FEATURES

3,000+ aircraft equipped with Sigma95 INSAn INS or Inertial Navigation System - sometimes used synonomously with IMU is a device used to measure a vehicle's speed, position, velocity, heading and orientation by using an accelerometer and a gyroscope.
Hyb: 3D < 10m
Position drift: < 1.6 Nm/h (95%)
Velocity error: < 4kts (95%)