Initial Alignment Algorithm Based on the DMCS Method in Single-Axis RSINS with Large Azimuth Misalignment Angles for...

Area of Science:

• Navigation Systems Engineering
• Inertial Navigation Technology
• Submarine Systems

Background:

• Rotation Strapdown Inertial Navigation Systems (RSINS) are crucial for high-accuracy, long-duration submarine navigation.
• Initial alignment accuracy is a critical factor impacting Strapdown Inertial Navigation System (SINS) performance.
• Traditional compass-based alignment methods struggle with large misalignment angles, hindering SINS deployment in complex environments.

Purpose of the Study:

• To enhance the initial alignment accuracy of RSINS, particularly under conditions of large azimuth misalignment.
• To address the limitations of traditional alignment algorithms in challenging operational scenarios for submarines.
• To improve the overall environmental suitability and reliability of RSINS for submarine applications.

Main Methods:

• Development of an initial alignment algorithm based on the Dual Mathematical Calculation System (DMCS).
• Introduction of an improved DMCS-based alignment algorithm specifically designed to handle large azimuth misalignment angles.
• Simulations and experimental validation of the proposed alignment algorithms.

Main Results:

• The proposed DMCS-based algorithm significantly improves initial alignment performance.
• The enhanced algorithm effectively addresses challenges posed by large azimuth misalignment angles.
• Both simulation and experimental results confirm the algorithm's efficacy.

Conclusions:

• The novel DMCS-based alignment algorithm enhances the accuracy and robustness of RSINS.
• The improved method increases the environmental suitability of RSINS for submarines operating in complex conditions.
• This advancement contributes to more reliable submarine navigation systems.