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2010•Application of Electronic TechniqueOpen access

Application of CORDIC algorithm in 3-axis digital compass

Zhi Li

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Abstract

CORDIC is an efficient algorithm for computing transcendental functions including trigonometric,inverse trigonometric,exponential and logarithmic functions.It has been applied to a 3-axis digital compass,which uses micro-controller as the control unit,for tilt-compensation and the calculation of pitch,roll and heading.Experiments show that the algorithm can run effectively on the micro-controller and keep a fair trade-off between accuracy and efficiency,and its practicality is demonstrated.

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What this paper is about

CORDIC is an efficient algorithm for computing transcendental functions including trigonometric,inverse trigonometric,exponential and logarithmic functions.It has been applied to a 3-axis digital compass,which uses micro-controller as the control unit,for tilt-compensation and the calculation of pitch,roll and heading.Experiments show that the algorithm can run effectively on the micro-controller and keep a fair trade-off between accuracy and efficiency,and its practicality is demonstrated.

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Available abstract

CORDIC is an efficient algorithm for computing transcendental functions including trigonometric,inverse trigonometric,exponential and logarithmic functions.It has been applied to a 3-axis digital compass,which uses micro-controller as the control unit,for tilt-compensation and the calculation of pitch,roll and heading.Experiments show that the algorithm can run effectively on the micro-controller and keep a fair trade-off between accuracy and efficiency,and its practicality is demonstrated.

Key concepts: CORDIC, Inverse trigonometric functions, Compass, Computer science, Trigonometry, Trigonometric functions, Transcendental function, Algorithm

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