TY - JOUR
T1 - Error Comparison of CNFFFT and Hankel Method in RCS Near-Field to Far-Field Transformation
AU - Zhao, Peng
AU - Hu, Weidong
AU - Liu, Yang
AU - Yao, Zhiyu
AU - Sun, Jianhang
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2023
Y1 - 2023
N2 - At present, there are mainly two kinds of image-based near-field to far-field transformation (NFFFT) algorithms: Hankel method and circular near-field-to-far-field transformation (CNFFFT). Due to the approximation in the measurement distance, the accuracy of Hankel method is lower than that of CNFFFT. However, the implementation of CNFFFT is complex and time-consuming. It is necessary to determine the detailed relationship between the transformation error and the near-field test distance for both algorithms to provide a basis for the choice of which algorithm to use. In this paper, the effect of the near-field test distance approximation of the two algorithms is obtained by simulating 4, 5, and 9 scattering point models. Meanwhile, an accurate comparison method for two NFFFT algorithms under different test distances is proposed.
AB - At present, there are mainly two kinds of image-based near-field to far-field transformation (NFFFT) algorithms: Hankel method and circular near-field-to-far-field transformation (CNFFFT). Due to the approximation in the measurement distance, the accuracy of Hankel method is lower than that of CNFFFT. However, the implementation of CNFFFT is complex and time-consuming. It is necessary to determine the detailed relationship between the transformation error and the near-field test distance for both algorithms to provide a basis for the choice of which algorithm to use. In this paper, the effect of the near-field test distance approximation of the two algorithms is obtained by simulating 4, 5, and 9 scattering point models. Meanwhile, an accurate comparison method for two NFFFT algorithms under different test distances is proposed.
UR - http://www.scopus.com/inward/record.url?scp=85166739044&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/2478/12/122003
DO - 10.1088/1742-6596/2478/12/122003
M3 - Conference article
AN - SCOPUS:85166739044
SN - 1742-6588
VL - 2478
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 12
M1 - 122003
T2 - 3rd International Conference on Defence Technology, ICDT 2022
Y2 - 22 August 2022 through 26 August 2022
ER -