Experimental Results of Attitude Determination Functional Algorithms Implementation in Strapdown Inertial Navigation...

Area of Science:

• Navigation Systems Engineering
• Aerospace Engineering
• Control Systems

Background:

• Strapdown inertial navigation systems (SINS) software development often prioritizes attitude determination algorithms.
• Existing algorithms frequently rely on transformation matrices for attitude calculation.
• The mathematical apparatus underpinning these algorithms varies.

Purpose of the Study:

• To propose a novel approach for deriving attitude determination algorithm equations in SINS.
• To analyze the application possibilities of a direct attitude angle calculation algorithm under real SINS operating conditions.
• To compare the proposed algorithm with a transformation matrix-based algorithm.

Main Methods:

• Derivation of attitude determination algorithm equations using direct heading, pitch, and roll calculation.
• Qualitative analysis of differences between the direct calculation method and transformation matrix methods.
• Performance comparison of the proposed algorithm against a transformation matrix algorithm using experimental data.

Main Results:

• The proposed direct attitude angle calculation algorithm demonstrates distinct qualitative differences from transformation matrix methods.
• Experimental tests conducted on vehicles and helicopters provided performance data for comparison.
• The study presents results investigating the performance of both algorithms in real-world SINS conditions.

Conclusions:

• The direct attitude angle calculation algorithm offers a viable alternative for SINS applications.
• The proposed method's performance in real operating conditions is validated through experimental testing.
• Understanding the differences between algorithms is crucial for optimal SINS software development.