10.1109/JSEN.2019.2955746
https://zenodo.org/records/3569313
oai:zenodo.org:3569313
An, Sining
Sining
An
Chalmers University of Technology
Zhongxia, Simon He
Simon He
Zhongxia
Chalmers University of Technology
An, Jianping
Jianping
An
Beijing Institute of Technology
Li, Jianguo
Jianguo
Li
Beijing Institute of Technology
Zirath, Herbert
Herbert
Zirath
Chalmers University of Technology
Micrometer Accuracy Phase Modulated Radar for Distance Measurement and Monitoring
Zenodo
2019
phase modulated
radar
millimeter-wave
micrometer accuracy
monitoring
Industry 4.0
distance measurement
2019-11-25
eng
https://ieeexplore.ieee.org/abstract/document/8911417
https://zenodo.org/communities/car2tera-h2020
https://zenodo.org/communities/eu
Creative Commons Attribution 4.0 International
An enhanced accuracy random binary phase modulated radar is proposed. It can be used in high accuracy monitoring in manufacturing. Compared with the traditional high accuracy radar using frequency modulated continuous wave (FMCW), the proposed radar system can be used in a multi-user scenario without occupying more bandwidth. A two-step distance estimation method is introduced to estimate the distance. First, the distance estimation accuracy is narrowed down to a half carrier wavelength by analyzing the envelope of the phase modulated signal. Then the carrier phase information increases the distance accuracy to several micrometers. An equalization method is introduced to solve the I/Q imbalance problem. The proposed radar system is demonstrated at a carrier frequency of 80 GHz with a bandwidth of 2 GHz. The measured distance error was within ±7 µm. In addition, a high measurement repetition rate of 500 kHz was reached which is suitable for real-time monitoring in automatic manufacturing.
European Commission
10.13039/501100000780
824962
Terahertz sensors and networks for next generation smart automotive electronic systems