Qinertia Lever Arm Free and compatible with all SBG products
When installing an Inertial Navigation System (INS), configuration of the lever arms between the INS and the GNSS antennas, and between the INS and additional sensors such as Odometer or DVL is a real challenge.
To simplify this operation and advance both efficiency and accuracy, we offer Qinertia Lever Arm tool, a free lever arm estimation tool, designed to re-estimate the lever arm automatically.
It eliminates the need for careful manual measurement, allowing SBG systems’ users to install their IMU with a rough estimate and refine it later with the tool.
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Simplify SBG INS setup with Qinertia Lever Arm
Qinertia’s lever arm estimation tool is designed to accurately estimate and refine mechanical installation parameters, including the GNSS primary and secondary antenna lever arms, as well as DVL or odometer lever arms. This is especially useful when precise manual measurements are impractical or difficult to obtain. With Qinertia Lever Arm, you can achieve more accurate lever arm values, enhancing positioning accuracy without the hassle of manual adjustments.
For optimal results, a dedicated data acquisition session with sufficient dynamics—such as figure-eight patterns—and a good open-sky environment is strongly recommended. The tool integrates real-time GNSS positions with IMU data in a loosely coupled manner, with real-time GNSS RTK recommended for the best performance.
Qinertia Lever Arm is available for free to all users with a MySBG account and is fully compatible with all SBG products, making the new Ellipse complete, serving as a powerful alternative to the real time mechanical estimation module built-in High Performance INS product such as Ekinox, Apogee, Navsight, and Quanta series.
Explore the full benefits of the Qinertia Lever Arm.
What is a lever arm?
The Lever Arm is the positional offset of the GNSS antenna or other reference points on the platform with respect to the INS reference point, usually expressed as a 3D vector (X, Y, Z). This is critical in GNSS/INS fusion because GNSS provides the position of the antenna, while the attitude information computed by the INS is referenced within the sensor itself, which is installed at a different location.
This offset, between the location of the antennas and the location of the INS means these points experience different dynamics during motion.
Even small errors in lever arm measurement can introduce significant positioning inaccuracies. Traditionally, this requires careful manual measurement, it comes with several challenges in practice:
Human error: small misalignments in measurements can lead to cumulative errors in positioning calculations.
Difficult access to mounting points: the IMU and GNSS antenna may be mounted in hard-to-reach locations, making precise measurement difficult.
Time-consuming process: Ensuring high accuracy requires multiple checks and validations, adding extra time to the installation process.
How to benefit from Qinertia Lever Arm estimation tool
Qinertia Lever Arm is a free feature of the full Qinertia software. You need a free MySBG account to use it. If you already have a MySBG account, download Qinertia directly.
Discover the full version of Qinertia
The next generation INS/GNSS post processing software with this new and free Qinertia Lever Arm tool.
Dive into the numerous features of the full version of Qinertia.
