TY - GEN
T1 - A Free Reflection Surface Based on Zernike Polynomial for Passive Millimeter Wave Imaging
AU - Wang, Pengcheng
AU - Wang, Nannan
AU - Wang, Xueying
AU - Denisov, Oleksandr
AU - Song, Qian
AU - Qiu, Jinghui
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - In this paper, the impact of the imaging system's focus characteristics. Passive millimeter wave imaging systems often use focal plane arrays and ellipsoidal reflective surfaces. The ellipsoid reflecting surface will cause focal spot distortion during the offset feed, which will adversely affect the resolution of the imaging system. To solve this problem, based on the W-band passive millimeter wave imaging system, this paper combines optical imaging theory and millimeter wave imaging theory to design a free-form surface based on Zernike polynomial to improve focal spot distortion. Using Zernike surface in this system, the resolution accuracy is increased by 29mm when the offset is 3.6°, and the resolution accuracy is increased by 11mm when the offset is 6.9°.
AB - In this paper, the impact of the imaging system's focus characteristics. Passive millimeter wave imaging systems often use focal plane arrays and ellipsoidal reflective surfaces. The ellipsoid reflecting surface will cause focal spot distortion during the offset feed, which will adversely affect the resolution of the imaging system. To solve this problem, based on the W-band passive millimeter wave imaging system, this paper combines optical imaging theory and millimeter wave imaging theory to design a free-form surface based on Zernike polynomial to improve focal spot distortion. Using Zernike surface in this system, the resolution accuracy is increased by 29mm when the offset is 3.6°, and the resolution accuracy is increased by 11mm when the offset is 6.9°.
KW - feed
KW - freeform surface
KW - passive millimeter wave imaging
KW - zernike polynomial
UR - https://www.scopus.com/pages/publications/85123382535
U2 - 10.1109/ICMMT52847.2021.9618354
DO - 10.1109/ICMMT52847.2021.9618354
M3 - 会议稿件
AN - SCOPUS:85123382535
T3 - 2021 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2021 - Proceedings
BT - 2021 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2021 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 13th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2021
Y2 - 23 May 2021 through 26 May 2021
ER -