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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.

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Summary
This summary is machine-generated.

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.

Keywords:
GNSSattitude determinationmeasurement domainpartial ambiguity resolutionreal-time kinematic

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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.