SPAN GNSS+INS Technology

SPAN GNSS+INS technology combines GNSS satellite positioning with inertial navigation system (INS) measurements from inertial measurement units (IMUs). By deeply coupling the GNSS and inertial measurements, GNSS tracking is refined to aid the acquisition of satellite signals. This process strengthens the accuracy of your current position and extends positioning reliability even during periods with GNSS signals are unavailable.

Developed by Hexagon | NovAtel, SPAN GNSS+INS technology has delivered assured positioning for over 15 years. Now, Veripos brings SPAN technology into the marine market with optimisations made to best support the unique needs of hydrographic survey and dynamic positioning applications.

GNSS+INS solutions like SPAN technology provide not only the absolute positioning you expect with GNSS, but also the velocity, attitude and heave measurements for an exceptional 3D understanding of your location and orientation in the world. With built-in robustness through the deep-coupling process, SPAN technology adds an extra layer of resiliency and reliability to your existing positioning solution.

SPAN GNSS+INS technology is scalable with different IMUs like our IMU-ISA-100C and IMU-μIMU-IC, the LD900 receiver and Quantum visualisation software. Learn more about our deep coupling process in our Introduction to GNSS and Beyond book, chapter 5.


Image for GNSS+INS for Dynamic Positioning Applications

GNSS+INS for Dynamic Positioning Applications

Our deeply coupled GNSS+INS solution builds robustness and resiliency to GNSS outages, interruptions and interference for the most reliable positioning system possible.

Ship at sea with beams pointing downward

GNSS+INS for Hydrographic Survey Applications

Integration of GNSS positioning with velocity, attitude and heave data specifically designed for hydrographic survey applications.

VERIPOS LD900 Receiver

LD900 Receiver

The LD900 is a quad-band GNSS receiver with GNSS+INS capabilities to deliver precise positioning for demanding marine operations.

Image of IMU ISA-100C


A near navigation grade sensor computing a blended GNSS+INS position, velocity and attitude solution.

Image of IMU uIMU-IC


A micro IMU with low weight and power consumption ideal for marine applications, computing a blended GNSS+INS position, velocity and attitude solution at up to 200 Hz.

Quantum with the red Veripos target.

Quantum visualisation software

Quantum visualisation software from Veripos has diagnostic features to easily identify problems. The user can interact with the software without impacting operational position availability and can both detect and mitigate GNSS interference in order to maintain reliable positioning.