Precise motion compensation method in terahertz ISAR imaging based on sharpness maximization

According to the characteristics of the manoeuvring targets and the superiorities of Terahertz Inverse Synthetic Aperture Radar (THz‐ISAR), a precise motion compensation method based on image sharpness maximization for manoeuvring targets in the terahertz radar was proposed in this letter. Computati...

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Bibliographic Details
Published in:Electronics letters 2022-10, Vol.58 (21), p.813-815
Main Authors: Wang, Hetong, Yang, Qi, Wang, Hongqiang, Deng, Bin
Format: Article
Language:English
Subjects:
Accuracy
Algorithms
Bandwidths
Entropy
Fourier transforms
Imaging radar
Inverse synthetic aperture radar
Maneuvering targets
Maximization
Methods
Motion compensation
Newton methods
Optimization
Radar imaging
Sharpness
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Summary:According to the characteristics of the manoeuvring targets and the superiorities of Terahertz Inverse Synthetic Aperture Radar (THz‐ISAR), a precise motion compensation method based on image sharpness maximization for manoeuvring targets in the terahertz radar was proposed in this letter. Computational efficiency and compensation accuracy are improved by modified Newton's method. Then a 330‐GHz imaging radar and an experiment on a corner reflector were introduced. The validity of the method was verified, by the experimental results, to be promising in THz‐ISAR imaging of manoeuvring targets.
ISSN:0013-5194
1350-911X
DOI:10.1049/ell2.12615