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Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence
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Unidirectional rotating coordinate rotation digital computer algorithm based on rotational phase estimation.

Chaozhu Zhang1, Jinan Han1, Huizhi Yan1

  • 1College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China.

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A new unidirectional rotating CORDIC algorithm reduces system delay and resource use. This innovation improves throughput for applications like global navigation satellite systems.

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Area of Science:

  • Digital signal processing
  • Computer arithmetic

Background:

  • The Coordinate Rotation Digital Computer (CORDIC) algorithm offers high precision phase rotation but suffers from high iterations and system delay.
  • Existing CORDIC methods present limitations in speed and resource efficiency for demanding applications.

Purpose of the Study:

  • To introduce a novel unidirectional rotating CORDIC algorithm to overcome the limitations of traditional CORDIC implementations.
  • To enhance phase rotation precision while reducing computational complexity and system latency.

Main Methods:

  • The unidirectional rotating CORDIC algorithm utilizes under-damping theory for initial phase rotations.
  • Angle threshold determination is achieved through a phase rotation estimation method.
  • Subsequent angle iterations are completed via rotation phase estimation.

Main Results:

  • Simulations and implementations using Quartus II and Modelsim software demonstrate reduced iterations and sign bit judgments.
  • The proposed algorithm significantly decreases system delay and resource utilization.
  • Experimental results confirm improved throughput and analyze the introduced error margins.

Conclusions:

  • The unidirectional rotating CORDIC algorithm offers a viable solution for high-precision phase rotation with reduced latency.
  • The algorithm shows promising applications in fields such as global navigation satellite systems and channelized receivers.