Attitude & Heading Reference System (AHRS)

Octantis 2 AN5300S

Airborne Qualified AHRS System

Aeron's Octantis 2 AHRS is indigenously designed and developed for airborne applications, qualified as per MIL-STD-461E, MIL-STD-810F and DO-178B Level B (100% MC/DC coverage) standards, and accorded CEMILAC certification.

DO-254DO-178B Level BMIL-STD-461EMIL-STD-810E/F/GCEMILAC CertifiedRTCA-DO-334
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Octantis 2 AHRS
OCT2
< ±0.0°Attitude Accuracy
< ±0.0°Heading Accuracy
< 0.0 WPower Consumption
0 HzUpdate Rate

Overview

The AHRS is equipped with tactical-grade MEMS-based gyroscopes, accelerometers, and a built-in magnetometer which provide uninterrupted, high-performance attitude and heading information to airborne platforms. Aeron's proprietary parameter estimation engine, based on a multi-modal Kalman filter architecture, offers superior real-time performance in demanding applications.

The Octantis 2 AHRS is an airborne-qualified system that can be used as a primary or standby instrument for electronic flight instrumentation systems and cockpit displays in a wide range of fighter, transport and passenger aircraft — and for autonomous control applications in unmanned aerial vehicles.

Design Highlights

  • Extended Kalman filter estimation engine
  • Redundant triaxial solid-state MEMS accelerometers & gyroscopes
  • External True Airspeed (TAS) aiding
  • External magnetometer input
  • High dynamic range up to ±450°/s and ±15g
  • Functional shock sustainance 20g

How Octantis Processes Sensor Data

Sensor inputs are fused in real time through Aeron's multi-modal Extended Kalman Filter to deliver stable attitude and heading estimates.

ACCELEROMETERTriaxial MEMS · ±15 gGYROSCOPETriaxial MEMS · ±450°/sMAGNETOMETERInternal · ±4 gaussEXTERNAL AIDINGTAS · Mag Field · Baro AltEXTENDEDKALMAN FILTERMulti-Modal SensorFusion EngineATTITUDE & HEADINGEuler Angles · 0.01° Res.BODY DYNAMICSBody Accel · Euler RatesDIAGNOSTICSBuilt-In-Test (BIT)

Everything Built for Airborne Reliability

High Reliability System, MIL Qualified
High Reliability System, MIL Qualified

Airworthiness certified with redundant sensor configuration.

Software Certified to DO-178B Level B
Software Certified to DO-178B Level B

Independently verified and validated in accordance with DO-178B Level B with 100% MC/DC coverage.

External True Air Speed (TAS) Aiding
External True Air Speed (TAS) Aiding

Accepts external TAS data for velocity aiding to deliver unmatched performance in high dynamics of fighter aircraft.

Communication Interface
Communication Interface

Standard isolated Serial RS422, RS232 interfaces and isolated power supply input including lightning protection.

Complete Continuous Diagnostics
Complete Continuous Diagnostics

Complete Continuous Built-In-Test provides extensive health monitoring of the device including sensor and power supply health.

Low Power Consumption
Low Power Consumption

Low-power system (< 2.5 W) based on MEMS technology ensures no need of external or internal cooling.

External Magnetometer Interface
External Magnetometer Interface

Facilitates choosing external magnetometer data to avoid degradation caused by nearby systems.

TSO Compliant Performance
TSO Compliant Performance

Benchmarked performance complying with TSO for flight instrumentation and attitude indication suitable for a wide array of aircraft.

Low Noise Sensors
Low Noise Sensors

Best-in-class MEMS sensors with excellent bias instability for consistent and accurate attitude and heading data.

Technical Specifications

OCT2-AN5300S · Datasheet Ver. 1.0 · Aug 2024

Range (X, Y, Z)

±15 g

Resolution

1 mg

Bias Instability *

5 mg

¹ 1σ accuracy after magnetic calibration and setting correct declination / offset angle.  ² System tested up to a maximum temperature of +80°C (4 hours continuous operation).  * Short Term / Allan Variance.

Applications

Flight Data Recorder (FDR)
Flight Data Recorder (FDR)
Cockpit Display
Cockpit Display
UAV Navigation
UAV Navigation

Documents & Resources

Documentation

OCT2 - AN5300S

Product Code: 19014

OCT2-AN5300S Datasheet

Ver. 1.0 · Aug 2024

Download PDF

Related Resources

Frequently
Asked
Questions

Common questions about the Octantis AHRS.

What interfaces are available on Octantis AHRS?
Octantis AHRS has RS232 and RS422 interfaces for communication.
What standards does the Octantis AHRS comply with?
Octantis AHRS hardware is tested as per MIL-STD-461E/F and MIL-STD-810F/G, and the software is tested in compliance with DO-178B Level B.
What features does AHRS have for reliability?
Octantis AHRS has redundant sensors for reliability and performance.
What lifecycle support is available for AHRS?
Octantis AHRS is supported for a long operational life of 20 years.