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Real-Time GNSS-Based Attitude Determination in the Measurement Domain
Lin Zhao1, Na Li2, Liang Li3,4
1College of Automation, Harbin Engineering University, Harbin 150001, China. zhaolin@hrbeu.edu.cn.
Sensors (Basel, Switzerland)
|February 7, 2017
Summary
This study introduces a new multi-baseline method for Global Navigation Satellite System (GNSS) receivers to determine attitude more reliably. The approach enhances accuracy and continuity compared to traditional methods.
Area of Science:
- Geomatics Engineering
- Navigation Systems
- Signal Processing
Background:
- Multi-antenna Global Navigation Satellite System (GNSS) receivers offer high-precision, drift-free attitude determination.
- Traditional attitude determination methods sequentially resolve attitude and ambiguity, underutilizing redundant multi-baseline measurements.
- Enhancing the reliability of attitude and ambiguity resolution is crucial for precise navigation applications.
Purpose of the Study:
- To propose a novel multi-baseline attitude determination method in the measurement domain.
- To simultaneously estimate attitude parameters and ambiguity, leveraging redundant measurements.
- To improve the reliability of attitude determination through a partial ambiguity resolution strategy.
Main Methods:
- Developed a multi-baseline attitude determination model in the measurement domain.
- Implemented simultaneous estimation of attitude parameters and ambiguity.
- Introduced a partial ambiguity resolution method to further enhance reliability.
Main Results:
- Static experiments demonstrated accuracy improvements of at least 0.03° and continuity enhancements up to 18% compared to traditional methods.
- Kinematic experiments confirmed the proposed method achieves an optimal balance between accuracy and reliability.
- The simultaneous estimation and multi-baseline approach effectively utilize redundant measurements.
Conclusions:
- The proposed multi-baseline method significantly enhances the reliability and accuracy of GNSS-based attitude determination.
- Simultaneous estimation and partial ambiguity resolution are key to improving performance.
- This method offers a robust solution for high-precision attitude determination in various dynamic scenarios.
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