Navigation systems

Inertial navigation is one of the core areas of expertise developed by Safran Electronics & Defense over more than 70 years, particularly in the military arena. Safran is one of the sole players in the sector with a perfect mastery of all the associated technologies: gyroscopes, gyrometers, accelerometers, integrated GPS receivers, electronics (ASICs), navigation data processing, etc. Safran has concentrated their expertise into two inertial navigation systems (SIGMA 95N and GADIRS), to best meet your operational needs. They combine great reliability, high precision (short- and long-term) and extreme robustness.

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Sigma 95L Inertial Navigation System

The Sigma 95L is a compact INS designed for aircraft (fixed & rotary wings) that require a light and small-size navigation system with an excellent performance level. It is particularly adapted to MALE UAVs and POD applications.
With an integrated Safran Electronics & Defense-designed GPS receiver, the Sigma 95L can be used as an autonomous Attitude and Heading Reference System (AHRS), or as a full size INS, provides optimal performance and excellent robustness thanks to advanced inertial/GPS integration.
Sigma 95L offers different levels of performance and several modes of alignment to adapt to the different operational needs of users. 

SIGMA 95L: COMPACT INERTIAL & HYBRIDIZED NAVIGATION SYSTEM
Sigma 95N Inertial Navigation System

Sigma 95N is a high-performance navigation system designed for most demanding aeronautic applications that require high navigation and guidance accuracy.
The Sigma 95N INS is based upon three highly accurate digital laser gyroscopes. It is equipped with a GPS or GPS/Glonass receiver and makes use of a powerful multimode Kalman filter to optimize performance by hybridizing inertial and satellite data. It can also integrate NATO's new Selective Availability/Anti-Spoofing Module (SAASM) and in the close future, the Europe's upcoming Gallileo system. Its open design and versatile interfaces multi-standard (Mil-Std-1553B, Arinc, Gost, etc.) allow easy integration in all types of avionic configurations and platforms.

SIGMA 95N: HIGH-GRADE INERTIAL & HYBRIDIZED NAVIGATION SYSTEM
Système de navigation GADIRS

GADIRS (GPS Air Data & Inertial Reference System) est un système de navigation hybride, triplex, à très haut niveau de sécurité et d'intégrité équipant l'A400M. Conçu pour répondre aux besoins futurs des avions de transport militaires, il permet d'effectuer toutes les missions de transport aérien militaire, tant tactiques que stratégiques, dans les environnements hostiles : vols à très basse altitude sans visibilité, approches sur pistes sommaires sans aide à l'atterrissage, etc.
Il intègre des fonctions de radionavigation anti-brouillage, la technologie GPS SAASM et des antennes à formation de diagramme de rayonnement (CRPA - Controlled Reception Pattern Antenna) assurent un très haut niveau d'immunité aux interférences électromagnétiques.