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Angular rate optimal design for the rotary strapdown inertial navigation system.

Fei Yu1, Qian Sun2

  • 1Collage of Automation, Harbin Engineering University, 145 Nantong Avenue, Harbin 150001, China. yufei@hrbeu.edu.cn.

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Summary
This summary is machine-generated.

Researchers analyzed the rotary strapdown inertial navigation system (RSINS) rotating angular rate. Optimizing this rate minimizes velocity error, enhancing RSINS performance in marine applications.

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Area of Science:

  • Navigation Systems Engineering
  • Control Theory
  • Signal Processing

Background:

  • Rotary strapdown inertial navigation systems (RSINS) offer high precision for extended durations, making them crucial for submarines and surface ships.
  • The rotating scheme is a core technology in RSINS, with its rotating angular rate significantly impacting error modulation effectiveness.

Purpose of the Study:

  • To analyze the relationship between the rotating angular rate and velocity error in RSINS.
  • To determine the optimal rotating angular rate for minimizing RSINS velocity error.

Main Methods:

  • Detailed analysis of the rotating angular rate and velocity error relationship using Laplace and inverse Laplace transforms.
  • Development of an optimal design method for the RSINS rotating rate.

Main Results:

  • RSINS velocity error is influenced by both sensor error and the rotating angular rate.
  • An optimal rotating angular rate that matches the sensor error is necessary to minimize velocity error.

Conclusions:

  • The proposed optimal design method for the RSINS rotating rate is valid and superior.
  • Simulation and experimental results confirm the effectiveness of matching the rotating angular rate to sensor error for improved RSINS performance.