GNSS/INS Navigation Systems

Reliable Position, Velocity, Orientation & Heading for UAVs, Robotics, Defence, Survey & Marine Platforms

A GNSS/INS Navigation System combines a high-quality IMU with one or more GNSS receivers. Because of this, it can provide accurate position, velocity, roll, pitch, yaw and heading in real time. This makes GNSS/INS systems ideal for applications that need stable navigation data, even when conditions change quickly.

Metromatics supplies advanced GNSS/INS solutions from leading global manufacturers. These systems support UAVs, defence platforms, autonomous robots, marine vehicles and survey equipment. As a result, they are widely used in navigation tasks where accuracy and reliability are essential.

Read more about GNSS/INS Navigation Systems

What Is a GNSS/INS?

GNSS/INS systems fuse data from:

3-axis gyroscopes for rotation
3-axis accelerometers for motion
3-axis magnetometers (optional)
Single or dual-antenna GNSS receivers
Onboard extended Kalman filtering

By combining all this information, the system delivers smooth and accurate navigation outputs, even when GNSS signals become weak for short periods.

Key Benefits of GNSS/INS Systems

Accurate position, velocity and orientation
Stable performance in motion and vibration
High update rates for control systems
Reliable navigation during short GNSS outages
Support for single or dual GNSS antennas
Compact, rugged and low-SWaP options

Types of GNSS/INS Navigation Systems

Single-Antenna GNSS/INS

These systems use a single GNSS antenna for navigation. They provide full position and velocity outputs, and they are often used in lightweight platforms.

Dual-Antenna GNSS/INS

Dual antennas allow the system to compute true heading without relying on magnetometers. As a result, these systems perform better in areas with magnetic interference.

Tactical-Grade GNSS/INS

These systems include extremely stable inertial sensors. Because of this, they deliver superior accuracy for defence, aerospace and high-performance robotics.

Typical Applications for GNSS/INS

UAVs & Drones

Autonomous navigation
Flight stability and control
Mapping and survey payloads

Robotics

Localization and mapping (SLAM)
Autonomous vehicle navigation
Precise motion control

Defence & Military Systems

Navigation in challenging environments
Targeting and tracking platforms
Autonomous ground or aerial systems

Surveying & Mapping

LiDAR motion compensation
Geospatial data collection
High-precision mapping

Marine & Subsea

AUV/ROV navigation
Antenna and sensor alignment
Vessel attitude and heading

GNSS/INS Products Supplied by Metromatics

Metromatics supplies a wide range of GNSS/INS systems. For example:

Compact GNSS/INS units for UAVs and robotics
Industrial-grade systems for survey and mapping
Tactical-grade GNSS/INS for defence and aerospace
Dual-antenna navigation systems for high-accuracy heading

The product grid below shows all GNSS/INS navigation systems offered by Metromatics.

How to Choose the Right GNSS/INS

Requirement / Use Case	Recommended System Type
Lightweight UAVs or small robots	Compact single-antenna GNSS/INS
Need accurate heading	Dual-antenna GNSS/INS
High precision for mapping	Industrial-grade GNSS/INS
Defence or long-duration missions	Tactical-grade GNSS/INS
Marine or antenna alignment	Dual-antenna GNSS/INS

FAQ’s About GNSS/INS

Q1. What is the difference between GNSS/INS and AHRS?

AHRS provides attitude and heading only. GNSS/INS also provides position and velocity, so it becomes a full navigation system.

Q2. Do GNSS/INS systems work without GPS?

They continue to operate for short periods using inertial data only. However, they need GNSS to maintain long-term accuracy.

Q3. What is the benefit of dual-antenna GNSS?

It provides true heading without relying on magnetometers. This makes heading more stable in noisy magnetic environments.

Q4. Can GNSS/INS be used in defence systems?

Yes. Tactical-grade GNSS/INS units offer low drift, reliable navigation and support for GPS-denied scenarios.

Why Buy GNSS/INS from Metromatics?

Access to trusted global navigation system manufacturers
Local engineering support in Australia
Experience with defence, UAVs, robotics and marine platforms
Help with selection, setup and system integration