Fiber Optic Gyro Inertial Navigation System (FOG-INS)

Aldebaran ALD-NS3500S

Tactical-Grade GNSS-Aided Navigation

Aldebaran ALD-NS3500S is a rugged, tactical-grade Fiber Optic Gyro (FOG) based Inertial Navigation System with an integrated multi-frequency, multi-constellation GNSS receiver, delivering dependable position, velocity and attitude data across airborne, land and naval platforms.

MIL-STD-810GJSS-55555MIL-STD-461EMIL-STD-1275EMIL-STD-704D
Aldebaran ALD-NS3500S FOG Inertial Navigation System
ALD-NS3500S
< 0.0°/hrGyro Bias Instability
< 0.0 cmRTK Horizontal Accuracy
< 0 WPower Consumption
0 HzUpdate Rate

Overview

Aldebaran ALD-NS3500S is a rugged, GNSS-aided, high performance Fiber Optic Gyro (FOG) based Inertial Navigation System. The device incorporates high-end three-axis accelerometers, three-axis fiber-optic gyroscopes, and an integrated multi-constellation GNSS receiver. The sensors are characterized and calibrated in Aeron's state-of-the-art facility. Aeron's proprietary parameter estimation engine delivers fast alignment and tactical class navigation performance in a matter of minutes.

The ALD-NS3500S model has a multi-frequency (L1/L2/L5), multi-constellation GNSS receiver — including IRNSS — with multiple tracked channels and best-in-class signal sensitivity. The Aldebaran series INS offers superior pure-inertial performance in short-term GNSS outages, and external air data, velocity, and position aiding can also be provided to the system.

ALD-NS3500S is suitable for positioning and pointing in airborne, land & naval applications. Aldebaran combines top-of-the-range tactical sensors — closed-loop 0.1°/hr (BI) fiber-optic gyros and <1 mg (long-term bias) accelerometers — to deliver dependable GNSS-denied performance in rough, off-road, and bumpy terrain. The gyros hold their bias under vibration, and Aeron's proprietary sensor fusion algorithms deliver superior navigation and position performance across GPS, GALILEO, and NAVIC constellations.

Design Highlights

  • Extended Kalman filter sensor fusion engine
  • Accepts external aiding data
  • Tactical-class IMU with <0.1°/hr gyro bias instability
  • Centimeter-level position accuracy with RTK
  • Multi-constellation L1/L2/L5 GNSS with IRNSS
  • Superior tracking robustness under heavy mechanical shocks or vibration
  • Isolated interfaces and power supply
  • Complies with MIL-STD-810G, JSS-55555, MIL-STD-461E, MIL-STD-1275E and MIL-STD-704D

How Aldebaran Processes Sensor Data

Sensor inputs are fused in real time through Aeron's proprietary Extended Kalman Filter to deliver stable navigation, attitude and heading estimates.

FIBER-OPTIC GYROTriaxial · <0.1°/hr BIACCELEROMETERTriaxial · 15 μg BIGNSS RECEIVER445-ch · L1/L2/L5 + IRNSSEXTERNAL AIDINGOdometer · CAN · Air DataNAVPROEKF ENGINEGNSS-InertialSensor FusionNAVIGATION SOLUTIONPosition · Velocity · TimeATTITUDE & HEADINGEuler Angles · 0.01° Res.DIAGNOSTICSContinuous BIT (CBIT)

Product Features

Field-proven inertial and GNSS engineering built for tactical navigation.

High Reliability System
High Reliability System

MIL-qualified INS-GNSS system for tactical performance in high vibration environments.

Closed-Loop FOG & Tactical MEMS
Closed-Loop FOG & Tactical MEMS

Excellent IMU performance under vibration with closed-loop fiber-optic gyroscopes and high-performance accelerometers at <15 μg bias instability.

GNSS-Denied Performance
GNSS-Denied Performance

Suitable for land navigation in GNSS-compromised scenarios, delivering 0.5% distance-travelled drift even in long-term GNSS outages with external aiding.

Odometer & External Aiding
Odometer & External Aiding

Accepts ground speed aiding over CAN and wheel-pulse odometer, plus external position, speed, and heading alignment inputs.

Isolated Interfaces & Power Supply
Isolated Interfaces & Power Supply

Protects device electronics from electromagnetic interference and transients on power and data lines.

Communication
Communication

Wide array of isolated interfaces and protocols, including Binary and NMEA over serial RS422 and RS232.

Device Diagnostics
Device Diagnostics

Complete and continuous built-in test (CBIT) to monitor and report system and sensor health parameters.

External Aiding
External Aiding

Accepts external position, speed, and heading aiding input from a master or external reference system.

NavPro Sensor Fusion Algorithm

Aeron's proprietary EKF-based sensor fusion engine delivers exceptional performance in GNSS-denied conditions.

Technical Specifications

ALD-NS3500S · Datasheet Ver. 1.1 · May 2025

Type

445 channel, L1/L2/L5 Code/Carrier phase GPS, GLONASS, QZSS, BEIDOU and IRNSS/NavIC

Diff. Correction Type

RTCMv2, RTCMv3, CMRv2 (for RTK mode)

Reacquisition Time

1 sec

TTFF Cold Start

45 sec

Connector

TNC female socket

Position accuracy specified for open-sky conditions (RMS levels, baseline < 40 km); RTK mode requires differential corrections from an RTK base station.  Heading accuracy is quoted after magnetic calibration for hard-iron / soft-iron disturbances and setting the correct declination / offset angle.

Other Product Details

Model NumberALD-NS3500S
ComplianceMIL-STD-704D · MIL-STD-1275E · MIL-STD-461E · MIL-STD-810G · JSS-55555 Compliant

Applications

Marine Navigation
Marine Navigation
Armored Vehicle Navigation
Armored Vehicle Navigation
Autonomous Vehicle Navigation
Autonomous Vehicle Navigation
Mapping and Surveying
Mapping and Surveying

Documents & Resources

Documentation

ALDEBARAN - ALD-NS3500S

Datasheet Ver. 1.1

Aldebaran ALD-NS3500S Datasheet

Ver. 1.1 · May 2025

Download PDF

Frequently
Asked
Questions

Common questions about the Aldebaran FOG-INS.

Which GNSS constellations are supported?
It supports GPS, GLONASS, Galileo, BeiDou, QZSS, and NavIC.
What type of gyroscopes are used in Aldebaran?
The system uses closed-loop Fibre Optic Gyroscopes with 0.1°/hr bias instability.
What communication interfaces are available?
Aldebaran supports RS232, RS422, NMEA, and Binary protocols.
What is the heading accuracy of Aldebaran INS?
The system provides heading accuracy of up to 0.3° RMS in dynamic GNSS conditions.
Is Aldebaran qualified for military applications?
Yes, it complies with MIL-STD environmental, EMC, power supply and JSS-55555 design standards.