# VectorNav Technologies > VectorNav Technologies designs and manufactures miniature, high-performance inertial navigation systems: IMU/AHRS, GNSS-aided INS (GNSS/INS) and dual-antenna GNSS compass INS (Dual GNSS/INS), built on MEMS inertial sensors and VectorNav's own sensor fusion algorithms. Products are made in the USA, ITAR-free, built in an AS9100D-certified facility, and serve aerospace, defense, marine, industrial and commercial programs. Key facts: - VectorNav introduced the VN-100 in 2009, the first fully calibrated, surface-mount MEMS IMU/AHRS on the market. - More than 100,000 units have been fielded, for more than 5,000 customers in more than 60 countries. - Every IMU is individually calibrated for bias, scale factor and axis alignment across its full -40 to +85 deg C operating range. - The product line has two tiers: the industrial-grade VN-100, VN-200 and VN-300, and the tactical-grade Tactical Series (VN-110, VN-210, VN-310). Most models come as a surface-mount (SMD) module, a Rugged enclosed unit, or a Tactical Embedded board-mount module. - Products, development kits, breakout boards and cables can be bought online in the store; prices are listed there. For volume, export or program pricing, contact sales. - Datasheets, user manuals, ICDs and mechanical drawings are free, but need a vectornav.com account. The SDK is available to verified users on request. ## Products - [Products overview](https://www.vectornav.com/products): The full product line, with links to each sensor. - [VN-100 IMU/AHRS](https://www.vectornav.com/products/detail/vn-100): Industrial-grade IMU and AHRS with a 5 deg/hr gyro in-run bias, 800 Hz IMU data and 400 Hz attitude output. Available as an SMD module or a Rugged enclosed unit. - [VN-110 IMU/AHRS](https://www.vectornav.com/products/detail/vn-110): Tactical-grade IMU/AHRS with a 0.5-0.7 deg/hr gyro, under 10 micro-g accelerometer in-run bias, 0.05 deg static pitch/roll and 800 Hz IMU data. - [VN-200 GNSS/INS](https://www.vectornav.com/products/detail/vn-200): Miniature GNSS-aided INS with 0.2 deg dynamic heading, 0.03 deg dynamic pitch/roll and 400 Hz navigation data. It was the first GNSS/INS in a single surface-mount package. - [VN-210 GNSS/INS](https://www.vectornav.com/products/detail/vn-210): Tactical-grade GNSS/INS with 0.1 deg dynamic heading, 0.015 deg dynamic pitch/roll and 400 Hz navigation data. - [VN-300 Dual GNSS/INS](https://www.vectornav.com/products/detail/vn-300): A GNSS compass and INS in one unit, with 0.15 deg static heading, 0.2 deg dynamic heading and 0.03 deg dynamic pitch/roll. - [VN-310 Dual GNSS/INS](https://www.vectornav.com/products/detail/vn-310): A dual-antenna GNSS compass fused with a tactical-grade INS, with 0.05 deg dynamic heading and 0.015 deg dynamic pitch/roll. - [Tactical Embedded](https://www.vectornav.com/products/tactical-embedded): Board-mount 31 x 31 x 11 mm versions of the Tactical Series (VN-110E, VN-210E, VN-310E), with a multi-band RTK/PPK-capable GNSS receiver and up to 800 Hz output. - [Compare sensors](https://www.vectornav.com/products/compare?p1=vn-100&p2=vn-110): Side-by-side specifications for any two or three VectorNav sensors. - [Tactical Series extended capabilities](https://www.vectornav.com/extended-capabilities): Connecting external IMUs and SAASM or M-Code GPS receivers to Tactical Series products. ## Buy online - [Online store](https://www.vectornav.com/store/products): Sensors, development kits, breakout boards, antennas and cables, with prices. - [IMU/AHRS in the store](https://www.vectornav.com/store/products/imu-ahrs): VN-100 SMD and Rugged units, development kits, breakout boards and cables. - [GNSS/INS in the store](https://www.vectornav.com/store/products/gnss-ins): VN-200 SMD and Rugged units, development kits, antennas and cables. - [Dual GNSS/INS in the store](https://www.vectornav.com/store/products/dual-gnss-ins): VN-300 SMD and Rugged units, development kits, antennas and cables. ## Solutions - [IMU](https://www.vectornav.com/solutions/imu): What an inertial measurement unit is, and how VectorNav calibrates and tests its IMUs. - [AHRS](https://www.vectornav.com/solutions/ahrs): Attitude and heading from sensor fusion, with real-time magnetic and acceleration disturbance rejection. - [INS](https://www.vectornav.com/solutions/ins): GNSS-aided position, velocity and attitude. - [GNSS compassing](https://www.vectornav.com/solutions/gnss-compassing): True-north heading from two GNSS antennas, with no dependence on the Earth's magnetic field. - [Assured PNT](https://www.vectornav.com/solutions/assured-pnt): Positioning, navigation and timing in contested or GNSS-denied environments. ## Industries and applications - [Aerospace](https://www.vectornav.com/industry/aerospace) - [Defense](https://www.vectornav.com/industry/defense) - [Marine](https://www.vectornav.com/industry/marine) - [Industrial](https://www.vectornav.com/industry/industrial) - [Commercial](https://www.vectornav.com/industry/commercial) - [Applications overview](https://www.vectornav.com/applications): How VectorNav sensors are used in the field. - [Uncrewed vehicle navigation](https://www.vectornav.com/applications/uncrewed-vehicle-navigation) - [EO/IR surveillance](https://www.vectornav.com/applications/eo-ir-surveillance) - [SATCOM on the move](https://www.vectornav.com/applications/satcom-on-the-move) - [LiDAR mapping](https://www.vectornav.com/applications/lidar-mapping) - [Aerial photogrammetry](https://www.vectornav.com/applications/aerial-photogrammetry) - [Bathymetric survey](https://www.vectornav.com/applications/bathymetric-survey) ## Inertial Navigation Primer VectorNav's free textbook on inertial navigation. It is public and does not need an account. - [Primer contents](https://www.vectornav.com/resources/inertial-navigation-primer): All chapters, from theory of operation to worked examples. - [Inertial sensors](https://www.vectornav.com/resources/inertial-navigation-primer/theory-of-operation/theory-inertial): How accelerometers, gyroscopes and magnetometers work. - [MEMS operation](https://www.vectornav.com/resources/inertial-navigation-primer/theory-of-operation/theory-mems) - [GNSS](https://www.vectornav.com/resources/inertial-navigation-primer/theory-of-operation/theory-gnss) - [AHRS](https://www.vectornav.com/resources/inertial-navigation-primer/theory-of-operation/theory-ahrs) - [GNSS/INS](https://www.vectornav.com/resources/inertial-navigation-primer/theory-of-operation/theory-gpsins) - [GNSS compass / Dual GNSS/INS](https://www.vectornav.com/resources/inertial-navigation-primer/theory-of-operation/theory-gnsscompass) - [Heading determination](https://www.vectornav.com/resources/inertial-navigation-primer/theory-of-operation/theory-heading) - [Reference frames](https://www.vectornav.com/resources/inertial-navigation-primer/math-fundamentals/math-refframes) - [Attitude representations](https://www.vectornav.com/resources/inertial-navigation-primer/math-fundamentals/math-attituderep) - [Kalman filter](https://www.vectornav.com/resources/inertial-navigation-primer/math-fundamentals/math-kalman) - [IMU specifications](https://www.vectornav.com/resources/inertial-navigation-primer/specifications--and--error-budgets/specs-imuspecs): How to read and compare IMU datasheet specifications. - [INS error budget](https://www.vectornav.com/resources/inertial-navigation-primer/specifications--and--error-budgets/specs-inserrorbudget) - [GNSS-challenged environments](https://www.vectornav.com/resources/inertial-navigation-primer/alternative-navigation/altnav-gnsschallenged) ## Software and integration - [VectorNav SDK](https://www.vectornav.com/resources/sdk): C++, C#, .NET, MATLAB and Python libraries for configuring and reading VectorNav sensors. Available to verified users on request. - [VectorNav Control Center](https://www.vectornav.com/resources/software): Desktop software for configuring a sensor and visualizing its output. - [VectorNav Programming Library](https://www.vectornav.com/resources/programming-libraries/vectornav-programming-library): The legacy C library. - [Resources library](https://www.vectornav.com/resources): Datasheets, user manuals, ICDs, mechanical drawings, technical notes and case studies. ## Company - [About VectorNav](https://www.vectornav.com/about): Mission, quality and support. - [News](https://www.vectornav.com/about/news): Product announcements and company news. - [Global sales](https://www.vectornav.com/about/global-sales): Regional sales representatives and distributors. - [Contact us](https://www.vectornav.com/contact-us): Sales and technical support. ## Optional - [Inertial Navigation Primer: Least squares](https://www.vectornav.com/resources/inertial-navigation-primer/math-fundamentals/math-leastsquares) - [Inertial Navigation Primer: Nonlinear Kalman filter](https://www.vectornav.com/resources/inertial-navigation-primer/math-fundamentals/math-nonlinearkalman) - [Inertial Navigation Primer: Magnetometer hard and soft iron calibration](https://www.vectornav.com/resources/inertial-navigation-primer/specifications--and--error-budgets/specs-hsicalibration) - [Inertial Navigation Primer: MIL-STD-461G example](https://www.vectornav.com/resources/inertial-navigation-primer/examples/milstd) - [Purchase terms](https://www.vectornav.com/purchase-terms) - [Terms and conditions of sale](https://www.vectornav.com/terms-and-conditions-of-sale) - [Software license agreement](https://www.vectornav.com/sla) - [Privacy policy](https://www.vectornav.com/privacy-policy)