Inertial Navigation Systems / MEMS GNSS-INS Solutions for Drones and Autonomous Vehicles

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Oxford Technical Solutions (OxTS) design and manufacture compact, reliable and easy-to-use  Inertial Navigation Systems (INS) that combine state-of-the-art MEMS sensors with high precision GNSS receivers to deliver accurate and consistent results.

Our GNSS INS solutions are used in a variety of applications, including sensor position and orientation in autonomous vehicles, and for direct geo-referencing data from drones and UAVs.


Miniature GNSS-aided INS for UAVs and drones

xNAV650 Miniature GNSS-aided INS for UAVs and drones

The xNAV650 is our smallest and lightest GNSS-aided Inertial Navigation System, combining the latest MEMS inertial sensor technology with survey-grade GNSS receivers for superior precision and reliability.

With dual-antenna quad-constellation tracking (GPS, GLONASS, BeiDou and Galileo), the small form factor xNAV650 is ideal for SWaP-limited high-accuracy applications such as UAV mapping and surveying. The tightly-coupled system delivers accuracy down to 2cm even in urban canyons and other challenging GNSS environments.


The xNAV650 INS can utilise optional Precision Time Protocol (PTP) time stamping functionality, allowing synchronization with LiDAR sensors and other UAV payloads. PTP allows for simplified setup over Ethernet, providing surveyors with the ability to get up and running quickly.

  • Measures 77 x 63 x 24 mm with a weight of 130g
  • 0.1° heading accuracy
  • 0.05° pitch/roll
  • 0.02m RTK/PPK

With competitively priced hardware and software bundles, the xNAV650 provides surveyors with precise, reliable navigation data – even when budget is limited.

Learn more: xNAV650 GNSS-INS


GPS-aided Inertial Navigation System for drones and UAVs

xNAV500 High Performance GPS-aided INSOur xNAV systems are complete GPS-aided inertial navigation solutions designed for the size- and-weight-constrained requirements of unmanned vehicle systems (drones/UAVs).

Combining state-of-the-art miniature MEMS sensors and RTK-capable GNSS with high-performance algorithms, the xNAV systems boast one of the best price/performance ratios on the market today, delivering accurate roll/pitch, position and heading data in the most challenging of operating environments.

Tight coupling of the GNSS and INS, differential GPS, dual antennas and an onboard processor all combine to deliver high accuracy and superior performance.


xNAV is available in four different models:

  • The dual-frequency xNAV250 and xNAV550 models achieve constant GPS heading accuracy of 0.1º, and
  • The xNAV200 and xNAV500 single-frequency systems provide 0.15º.

Drift during GNSS outages is minimized to 2.79m (RTK) or 0.95m (PPS) per minute.

xNAV v3 GNSS-INS for dronesAll xNAV models can store 32GB of data for later post-processing, and the xNAV500 and XNAV550 feature the added option of real-time processing. Post-processing and graphing is easily handled by our powerful NAVsuite software package, included free-of-charge with both models.

Learn more: xNAV GPS-Aided INS

Survey+ v3 MEMS GNSS-INS

Inertial Navigation System for position and orientation

OxTS Survey+ Inertial Navigation SystemOur Survey+ family of systems seamlessly combines inertial measurements with GNSS data to provide a highly accurate real-time 3D navigation solution.

  • 0.05° heading accuracy
  • 0.03° pitch/roll
  • 0.01m RTK/PPK

GNSS receivers, an IMU, a powerful processor and onboard storage are all combined into one compact unit that can be used standalone or combined with external sensors such as LIDAR scanners and hyperspectral cameras.

Different variations of the Survey+ are available to suit almost any application – the system can be configured with single or dual antennas, GPS or GPS+GLONASS, 100 Hz or 250 Hz output rate, and L1 or L1+L2 tracking.

Learn more: Survey+ Inertial Navigation Systems

xOEM v3 INS board set

Lightweight MEMS GNSS-INS board sets for system integrators

OxTS xOEM-v3-boardset GNSS INSThe xOEM family of boardsets provides extremely lightweight high-accuracy INS capabilities for UAVs and unmanned systems. Based on our leading xNAV INS, the compact GNSS-aided inertial navigation platforms are designed to be integrated directly into OEM products.

  • 0.1° heading accuracy
  • 0.05° pitch/roll accuracy
  • 2cm position accuracy

With single- or dual-frequency GNSS receiver options, xOEM boards tightly couple state-of-the-art, rigorously calibrated inertial sensors with differential GNSS and dual GNSS heading technologies to provide exceptional orientation accuracy and minimal drift even under the most challenging of navigation conditions.

The xOEM GNSS-INS boardsets are ideal for a wide variety of OEM unmanned systems applications, including integrated LiDAR+INS payloads, remote sensing, airborne photogrammetry, mobile mapping and surveying, and more.

Learn more: xOEM GNSS INS Boardsets

‘Centre of Excellence’ Training Webinars

OxTS webinars

Our training webinars, hosted by our expert team, are designed to educate and support our customers. The webinars cover a range of topics at both introductory and expert levels, to provide attendees with a background to our technology, how it works and what it can be used for.

Visit the OxTS Centre of Excellence
Join our free webinars and learn with confidence >

Insight Papers and Case-Studies

Download our LiDAR Surveying Brochure
Learn more about highly accurate and repeatable navigation data for pointcloud analysis.

Download our Boresight Calibration Brochure
Learn more about data-driven calibration techniques for ultimate pointcloud precision and repeatability.

Download our Dronezone Case Study
Learn how adding OxTS Inertial Navigation technologies into your own products can reduce mapping times by 50%.

Inertial Navigation Systems / MEMS GNSS-INS Solutions for Drones and Autonomous Vehicles
Oxford Technical Solutions Contact Directly Follow Company
Oxford Technical Solutions Oxford Technical Solutions Ltd
Park Farm Business Centre, Middleton Stoney, Oxfordshire, OX25 4AL U.K.
+44 1869 238 015 [email protected] Visit Website