Journal of Aerospace Science and Technology

Journal of Aerospace Science and Technology

Modification in Calibration of Strapdown Inertial Navigation System Due to Compensation of Inherent Error in Fixture Manufacturing

Document Type : Original Article

Authors
A. Abdoli 1
Seyed Hossein Taghavi 2
1 Faculty of Electrical Engineering, Iran University of Science and Technology
2 Faculty of Electrical and Computer Engineering, Shahid Rajaee University
10.22034/jast.2018.145980
Abstract
 It is always easier to measure the deviation of a product from its design commitments, in comparison to making it identical to plan obligations. In this paper, this simple fact is utilized to compensate the inherent error of fixture fabrication by a mathematical modeling of possible sources of error, in calibration of strapdown inertial navigation system (INS). Since an INS should be mounted on the fixture, all deviations are completely transferred to INS. Compensating the inherent errors of a fixture surely guarantees a more accurate calibration, but its effectiveness depends on specific factors. Proposed method can upgrade a fixture with any manufacturing quality to accuracy level of measurement tool. This technique is explained by two examples. Data of industrial-grade strapdown INS is used to proof of claims.
Keywords
Fixture
strapdown inertial navigation
INS calibration
error compensation
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Journal of Aerospace Science and Technology
Volume 11.1, Issue 1
June 2018
Pages 31-37

  • Receive Date 20 March 2018
  • Revise Date 06 April 2018
  • Accept Date 20 May 2018
  • First Publish Date 01 June 2018