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POLAR-500 is an excellent Air Data Attitude Heading Reference System (AD-AHRS) for aerial systems. Take advantage of UAV Navigation's extensive experience in the UAV sector. It includes a Dual GNSS Compass and it is capable of providing precise attitude estimation and satellite pointing.

POLAR-500 Inertial Navigation System
ARINC 429 Output

Azimuth and elevation angles provided through an ARINC 429 standard output.

Excellent for Aerial Systems

Take advantage of UAV Navigation's extensive experience in the UAV sector.

Dual GNSS Compass (DGC)

DGC to accurately estimate the actual heading, under both static and dynamic conditions.

Compact and Easy to Integrate

Reduced size and weight allows straight forward integration into the user's system.

GNSS-denied Navigation

Exceptional navigation and attitude performance in GNSS-denied environments.

Low Power Consumption

Low battery consumption to achieve high autonomy.

UAV Navigation is an industry leader known for designing cutting-edge inertial navigation systems and other navigation solutions for military and commercial Unmanned Aerial Vehicles (UAVs). Since 2004, UAV Navigation has sold over 2,000 systems and accumulated over 60,000 flight hours. One of its most innovative technologies is the POLAR-500, which is a compact AD-AHRS used for pointing and stabilization on Satcom on the Move (SOTM) terminals such as the Aviator UAV 200 or the HGA-600 antennas.

Designed to withstand the toughest conditions, POLAR-500 is a high-end MEMS-based Air Data Attitude Heading Reference System (AD-AHRS) and Inertial Navigation System (INS). Additionally, it contains a dual GNSS compass for more accurate heading estimation.

POLAR-500 AD-AHRS has been tested in a wide variety of dynamic environments, which confirms its ability to deliver outstanding results. It is absolutely immune to individual sensor failures while maintaining an accurate position and attitude estimation. Its performance in GNSS denied environments is outstanding (<30 m/min).

POLAR-500 provides real-time fused sensor data through an RS-232 serial line. This information is critical for other on-board functions such as status sensor telemetry, gimbal stabilization, etc.

Additionally, POLAR-500 is partly compliant with ARINC Characteristic 781, being able to operate as an Antenna Pointing and Stabilization system, with an integrated Air Data Inertial Reference Unit (ADIRU), meaning it can be used along with a satellite communication modem, providing azimuth and elevation angles through an ARINC 429 output to the antenna.

The POLAR-500 includes a POLAR-500 unit in alumnium box, 2xGNSS Antennas and connector.


Key features:
  • High accuracy in attitude estimation. Precise attitude determination is critical for the navigation and control of an aircraft. To achieve outstanding levels of attitude estimation precision, years of research and development of aerospace-grade sensor fusion estimation algorithms have been invested.
  • POLAR-500 is partly compliant with ARINC Characteristic 781, being able to operate as an Antenna Pointing and Stabilization system.
  • Azimuth and elevation angles provided through an ARINC 429 standard output.  
  • Highly immune to individual sensor failures while maintaining accurate position and attitude estimation.
  • Compact and easy to integrate.
  • Supplied as standard in an aircraft-grade anodized aluminum box.
  • As a developer and manufacturer of professional-grade autopilots, UAV Navigation is committed to delivering superior services. We maintain the highest industry standards in terms of product performance, accuracy, and reliability. UAV Navigation's manufacturing facility is equipped with state-of-the-art calibration and measurement tools. Moreover, all products which leave the facility must pass exhaustive Quality Control checks. All equipment and tools used during manufacture, calibration and Acceptance Testing Protocol (ATP) comply with UAV Navigation's strict Quality Policy.
  • Combines exceptional navigation and attitude performance device in highly dynamic conditions and GNSS-denied dead-reckoning navigation.
  • Accurate heading estimation under both static and dynamic conditions (Dual GNSS Compass).
  • Quaternion-based solution. Avoids the gimbal-lock problems commonly found in traditional systems.
  • High data report rates from the sensors in order to reduce the latency. This is a critical requirement in advanced control systems.
  • POLAR-500 is the perfect solution for SATCOM on the Move (SOTM) terminals.
  • Compatible with Visionair & Analytics: for Configuration, Real-Time and Post-Analysis.
  • Export to KML. The user can save the log file in KML format to be used in third-parties’ softwares (Google Earth, Excel..)
Voltage Supply
9 to 36 Volts DC.
Power consumption
GNSS Antenna Connector
50 Ohm SMA Female
GNSS Antenna power supply
3.3 V
System Connector
Amphenol MS3112E-16-26P
Telemetry Port (P0)
RS-232. Configuration / Telemetry
Peripherial Port (P1)
Antenna Steering Output
ARINC 429 high speed (100kbps)
Multi-constellation GNSS capability
  • 184-channel receiver
  • GPS L1C/A, L2C
  • QZSS L1C/A, L2C
  • BeiDou B1I, B2I
  • Galileo E1B/C, E5B
-167 dBm
Time to First Fix
Cold Start: 24s. Hot Start 2s
Navigation Update Rate
Single GNSS: Up to 10 Hz
Concurrent GNSS: up to 10 Hz
GNSS - Velocity Accuracy
0.05 m/s
GNSS - Heading Accuracy
0.3 degrees
Horizontal Position Accuracy
Up to 0.01 m
Operational Limits of GNSS
  • Dynamics: 4 g
  • Altitude: 50,000 m
  • Velocity: 500 m/s
Air Speed Range
15-220 kt
(43-450 kt version is also available)
-2.000 ft to +36.000 ft AMSL
Altimeter Accuracy
50 ft
Altimeter Resolution
0.5 ft
Sampling rate
1 kHz
Accelerometers range
+/-8 g (all axis), +/-15 g under request
3dB Bandwidth
400 Hz
0.52 mg/√Hz
Gyro range
+/- 300 º/s (all axis)
3dB Bandwidth
77 Hz
0.015 °/s /√Hz
Internal Magnetometer
3 axis (possibility to connect external magnetometer, e.g. MG01)
Magnetometer attitude compensation
Full scale range
+/- 1000 uT
0.10 uT
Maximum applied magnetic/field
100,000 uT
Roll, pitch, yaw range

Continuous unrestricted

Pitch & Roll error
< 0.5º
Heading error
< 1º
3m CEP with GPS and WAAS/EGNOS available
<30 m/min (continuous, not first minute only)

* 1σ precision in single cylinder piston powered UAV standard flight, with full sensor suite operational. Values are valid for internal and external magnetometer operation.

IP Rating
Size (mm, H x W x L)
45.0 x 68.0 x 74.5
170 g
Humidity (boxed only)
Up to 90% RH, non-condensing
Temperature range
-40ºC to +85ºC
Pitot/Static Port Diameter
3.0 mm
Shock survival
500g 8ms 1/2 sine
POLAR-500 Evaluation Kit

UAV Navigation offers the POLAR-500 Evaluation Kit (EVKIT) to enable evaluation of the POLAR-500 product by Customers.

The EVKIT includes a POLAR-500 unit along with a POLAR-500 Break Out Board (BOB) to allows the user to access all the available POLAR-500 Inputs and Outputs.

Name Kit Contents

POLAR-500 Evaluation Kit

  • POLAR-500 unit
  • POLAR-500 Breakout Board
  • 2 x Antenna DGNSS ANN-MB-00-00 and connector

Do you need more information?

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UAV Navigation is a privately-owned company that has specialized in the design of flight control solutions for Unmanned Aerial Vehicles (UAVs) since 2004. It is used by a variety of Tier 1 aerospace manufacturers in a wide range of UAV - also known as Remotely Piloted Aircraft Systems (RPAS) or 'drones'. These include high-performance tactical unmanned planes, aerial targets, mini-UAVs and helicopters.