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Custom high-precision attitude determination using an Inertial Measurement Unit (IMU)
requires a combination of high-grade hardware, careful calibration, and advanced sensor fusion algorithms to counteract inherent sensor errors like noise and drift
.
Key Components for High Precision
1. Hardware Selection and Calibration
- Sensor Grade: The desired precision dictates the hardware grade. For high precision, move beyond consumer-grade MEMS to industrial, tactical, or even navigation-grade units, with Fibre-Optic Gyroscopes (FOGs) offering the highest accuracy. These can achieve bias instability as low as 0.001°/hr.
- Aiding Sensors: While an IMU provides core data (angular rate and specific force), a 9-Degrees-of-Freedom (DOF) system that includes a magnetometer is often used for a complete Attitude and Heading Reference System (AHRS). External inputs like Global Navigation Satellite Systems (GNSS) are also integrated for improved accuracy, particularly in outdoor applications.
- Calibration: Sensor measurements are affected by biases, scale factor errors, and temperature variations. Intensive factory and on-site calibration processes are crucial to model and compensate for these errors across the full operating range.
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Developing a practical, high accuracy attitude determination ...
Aerospace Research Central
https://arc.aiaa.org
› doi
Aerospace Research Central
https://arc.aiaa.org
› doi
Aug 12, 2025
—
This research aims to enhance the precision
of
IMUs to achieve below one degree accuracy, a critical requirement for many space missions that ...
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High-Precision Inertial Measurement Units (IMU)
GuideNav
https://guidenav.com
› inertial-measurement-unit
GuideNav
https://guidenav.com
› inertial-measurement-unit
GuideNav's inertial measurement unit(IMU) solutions
are engineered to deliver exceptional performance across aerospace, defense, and industrial applications.
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I Wrote an Extended Kalman Filter for UAV Attitude ...
Medium · Orlando Quintana
280+ likes · 10 months ago
Medium · Orlando Quintana
280+ likes · 10 months ago
Part of my custom Rust-based UAV project, this EKF delivers
real-time attitude estimation from raw IMU data
using quaternions.
Read more
Scholarly articles for custom high precision attitude determination using imu |
|
|
… /MEMS
IMU attitude determination
of small UAVs
with
…
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‎
Strohmeier
- Cited by 23
… strategy for MEMS redundant-
IMU
exploiting
custom
…
-
‎
De Alteriis
- Cited by 22
…
with
kalman filter based
attitude determination
-
‎
Pérez-D'Arpino
- Cited by 20
|
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Design and Prototyping of a Low-Cost Spacecraft Attitude ...
San Jose State University
https://www.sjsu.edu
› Anthony.Gong-S15.pdf
San Jose State University
https://www.sjsu.edu
› Anthony.Gong-S15.pdf
PDF
by A Gong
2015
—
In current literature, various ground-based spacecraft
attitude determination
and con-trol setups are employed to test control strategies and algorithms.
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Most accurate attitude determination system in spacecraft?
Space Exploration Stack Exchange
https://space.stackexchange.com
› questions › most-acc...
Space Exploration Stack Exchange
https://space.stackexchange.com
› questions › most-acc...
Mar 18, 2021
—
Star trackers are
by
far the most
precise
. Sun sensors are used for coarse knowledge and IMUs only for estimating the
attitude
during a maneuver.
Read more
Evaluation of IMU Orientation Estimation Algorithms Using a ...
Machine Learning and Data Analytics Lab
https://www.mad.tf.fau.de
› BT_LeaHenrich_Final
Machine Learning and Data Analytics Lab
https://www.mad.tf.fau.de
› BT_LeaHenrich_Final
PDF
To achieve an highly
accurate
orientation estimation
with
an inertial
measurement
unit (
IMU
), advanced technologies of signal processing and data fusion are ...
Read more
91 pages
design and test of an attitude determination and control ... - DTIC
dtic.mil
https://apps.dtic.mil
› sti › pdf › ADA618506
dtic.mil
https://apps.dtic.mil
› sti › pdf › ADA618506
PDF
by ML Tibbs
Cited by 10
—
Achieve a high level of attitude determination using an IMU
. Along with the QUEST algorithm, the ADCS testbed uses magnetometer and.
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176 pages
Attitude Measurement for High-Spinning Projectile with a ...
MDPI
https://www.mdpi.com
› ...
MDPI
https://www.mdpi.com
› ...
by F Liu
2019
Cited by 35
—
A low cost,
high precision
hollow structure MEMS
IMU
has been developed to measure the roll angular rate of a high-spinning projectile.
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High Precision Attitude Estimation Based on Differential ...
ResearchGate
https://www.researchgate.net
› publication › 38117675...
ResearchGate
https://www.researchgate.net
› publication › 38117675...
This method reduced the
IMU measurement
errors
by
79.7% compared to a single sensor
IMU
in static and dynamic states. Roll and pitch angle estimation errors of ...
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Attitude Estimation with an IMU - Example
GitHub Pages documentation
https://caor-mines-paristech.github.io
› auto_examples
GitHub Pages documentation
https://caor-mines-paristech.github.io
› auto_examples
This script shows how well works the UKF on parallelizable manifolds for estimating the orientation of a platform from an
IMU
.
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