Inertial Navigation System (INS-GNSS)

Pollux 3 PLX3-N

Micro-Miniature Inertial Navigation System

Aeron's PLX3-N is a family of highly compact MEMS-based Inertial Navigation Systems, running an Extended Kalman Filter for near-tactical performance in a package small enough for UAVs, UGVs, and other unmanned systems where size and power are tightly constrained.

MIL-STD-810GIP65
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Pollux 3 PLX3-N
PLX3
0.0 m CEPPosition Accuracy
< 0.0°Heading Accuracy
< 0.0 WPower Consumption
0 HzUpdate Rate

Overview

Aeron's PLX3 is a family of highly compact MEMS-based Inertial Navigation Systems. The system runs an Extended Kalman Filter (EKF), offering near-tactical performance and providing the best estimates of navigation parameters — including position, velocities, attitude, and heading. PLX3-N features tri-axial MEMS solid-state accelerometers, tri-axial gyroscopes, a tri-axial magnetometer for heading measurement, and an integrated multi-constellation GNSS.

PLX3-N is a miniature, low-powered INS well suited for UAVs, UGVs, and other unmanned systems where size is a constraint. This strap-down system is designed to perform in highly dynamic situations, delivering precise attitude, heading, and position information over serial RS232 and UART TTL ports at a navigation output rate of 200 Hz.

Design Highlights

  • Extended Kalman Filter sensor-fusion engine
  • Tri-axial MEMS accelerometers, gyroscopes & magnetometer
  • Integrated multi-constellation GNSS (GPS, GLONASS, Galileo, BeiDou, NavIC)
  • Jamming & spoofing detection on the GNSS receiver
  • User-configurable dynamic range up to ±2000°/s and ±40 g
  • Weighs ~38 g — built for size-constrained unmanned platforms

How Pollux 3 Processes Sensor Data

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

ACCELEROMETERTriaxial MEMS · ±10/40 gGYROSCOPETriaxial MEMS · ±500/2000°/sMAGNETOMETERTriaxial · ±50 gaussGNSS RECEIVERMulti-Constellation · SBASEXTENDEDKALMAN FILTERGNSS-AidedNavigation EnginePOSITION & VELOCITY1.5 m CEP · 0.1 m/s (1σ)ATTITUDE & HEADINGEuler Angles · 0.01° Res.DIAGNOSTICSHealth Status · Time

Engineered for Compact, High-Accuracy Navigation

With DriftLoc<sup>TM</sup>
With DriftLocTM

When satellites vanish in tunnels, urban canyons, or interference zones, it holds an accurate position and true heading by minimizing INS drift.

Compact, Tiny SWaP
Compact, Tiny SWaP

Miniature 37 (L) × 37 (W) × 15 (H) mm footprint at ~38 g, drawing under 1.5 W — built for size- and power-constrained unmanned platforms.

High Accuracy
High Accuracy

1.5 m CEP position accuracy and 0.1 m/s horizontal velocity accuracy (1σ) with integrated multi-constellation GNSS, including jamming and spoofing detection.

Lightweight
Lightweight

Weighs approximately 38 g, suitable for micro-UAV applications while remaining ruggedized for demanding operating environments.

High Quality Sensors
High Quality Sensors

Uses high-quality MEMS gyros for near-tactical performance and usable GNSS-denied performance during short-term outages.

MIL Qualified
MIL Qualified

Complied to MIL-STD-810G to perform reliably in extreme outdoor environments of temperature and vibration.

Rugged Design
Rugged Design

Ruggedized construction built to withstand the shocks and vibration typical of real-world unmanned-platform operation, such as quadcopter landings.

Extended Kalman Filter
Extended Kalman Filter

Offers near-tactical performance, providing the best estimates of navigation parameters during short-term GNSS outages.

Superior Ingress Protection
Superior Ingress Protection

IP65 compliant, able to endure water spray and rain — a reliable solution even when externally mounted.

Communication
Communication

Standard RS232 and UART TTL interfaces plus SPI/I²C for external airspeed and magnetometer aiding input, for easy integration with autopilot systems and controllers.

Technical Specifications

PLX3-N · Datasheet Ver. 1.1 · June 2026

Range

±10/40 g (User Configurable)

Bias Instability *

8 µg

Velocity Random Walk (VRW) *

0.03 m/s/√hr

Noise Density *

50 µg/√Hz

Bias Repeatability

0.15 mg

¹ 1σ accuracy; heading accuracy shown with magnetometer and in dynamic conditions with GNSS.  ² GNSS-denied accuracy is a function of elapsed outage time and depends on the accuracy of external speed/airspeed aiding.  * Typical / Allan Variance.

Applications

Drone and UAV Navigation
Drone and UAV Navigation
Autonomous Control and ADAS
Autonomous Control and ADAS

Documents & Resources

Documentation

PLX3-N

Product Code: 17014

PLX3-N Datasheet

Ver. 1.1 · June 2026

Download PDF

Related Resources

Frequently
Asked
Questions

Common questions about the Pollux 3 INS-GNSS.

What navigation accuracy does Pollux 3 provide?
Pollux 3 delivers horizontal position accuracy of 1.5 m CEP with good GNSS availability (1 m CEP with SBAS) and horizontal velocity accuracy of 0.1 m/s (1σ).
What is the maximum output data rate of Pollux 3?
Pollux 3 provides navigation outputs at up to 200 Hz and raw IMU data at up to 1000 Hz.
Which applications is Pollux 3 designed for?
Pollux 3 is ideal for UAVs, drones, UGVs, autonomous robots, and other compact autonomous platforms requiring accurate navigation and attitude information.
What interfaces does Pollux 3 support?
It supports RS232 and UART TTL for data output, plus SPI/I²C for external airspeed and magnetometer aiding input.
Why choose Pollux 3?
It combines an Extended Kalman Filter, multi-constellation GNSS with jamming/spoofing detection, and a compact ~38 g package in a single low-power unit.