OFDM Radar Range Accuracy Enhancement Using Fractional Fourier Transformation and Phase Analysis Techniques

descriptionPublicationkeyboard_double_arrow_right Article 15 Jan 2020Publisher:Institute of Electrical and Electronics Engineers (IEEE)Journal:IEEE Sensors Journal, volume 20, pages 1,011-1,018 (issn: 1530-437X, eissn: 2379-9153,

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Authors: Jianguo Li; Sining An; Jianping An; Herbert Zirath; Zhongxia Simon He;

doi: 10.1109/jsen.2019.2946003

OFDM Radar Range Accuracy Enhancement Using Fractional Fourier Transformation and Phase Analysis Techniques

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Abstract

Orthogonal Frequency Division Multiplexing (OFDM) technique is obtained significant attention in radar applications for its interference resilience property. In this paper, Fractional Fourier Transformation (FRFT) and phase analysis techniques are proposed to enhance ranging accuracy of an OFDM Radar. A proof-of-concept radar is built and tested at 79 GHz and a range accuracy of $20~\mu \text{m}$ at 5 MHz measurement rate was measured. The range accuracy is 500 times higher than using fast Fourier transformation (FFT) method.

Related Organizations

Chalmers University of Technology
Sweden
Beijing Institute of Technology
China (People's Republic of)

Keywords

Fractional Fourier Transformation, Phase Analysis Technique, Range accuracy, OFDM Radar

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