A compact RCS formula for a dihedral corner reflector at arbitrary aspect angles

Wang, Shuen-Yih; Jeng, Shyh‐Kang

doi:10.1109/8.704815

Cited by 14 publications

(2 citation statements)

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“…Additionally, the measured RCS of DR4 in both ascending and descending TSX data shows substantial disparities with theoretical values, exceeding 5 dBsm in this case. These discrepancies may arise from environmental influences or alignment deviations during CR installation [8,22].…”

Section: The Rcs Features Of the Cr Array In Multi-resource Sar 41 Th...mentioning

confidence: 99%

“…Currently, the RCS analysis of dihedral CRs is primarily focused on theoretical simulation. Wang et al [22] and Timothy et al [23], based on physical optics and diffraction theory, have derived a model for the RCS reduction of dihedral CRs at any viewing angle. Anderson et al's study indicates that a 5 • vertical angle discrepancy between two panels results in approximately 6 dB RCS reduction [24].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Dihedral Corner Reflector’s RCS Features in Multi-Resource SAR

Liu,

Li,

et al. 2024

Applied Sciences

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Artificial corner reflectors are widely used in the vegetated landslide for time series InSAR monitoring due to their permanent scattering features. This paper investigated the RCS features of a novel dihedral CR under multi-resource SAR datasets. An RCS reduction model for the novel dihedral corner reflector has been proposed to evaluate the energy loss caused by the deviation between the SAR incident angle and the CR’s axis. On the Huangtupo slope, Badong county, Hubei province, tens of dihedral CRs had been installed and the TSX–spotlight and Sentinel-TOPS data had been collected. Based on the observation results of CRs with more than ten deviation angles, the proposed reduction model was tested with preferable consistency under a real dataset, while 2 dBsm of systematic bias was verified in those datasets. The maximum incident angle deviation in the Sentinel data overlapping area is over 12°, which leads to a 2.4 dBsm RCS decrease for horizontally placed dihedral CRs estimated by the proposed model, which has also been testified by the observed results. The testing results from the Sentinel data show that in high, vegetation-covered mountain areas like the Huangtupo slope, the dihedral CRs with a 0.4 m slide length can be achieve 1 mm precision accuracy, while a side length of 0.2 m can achieve the same accuracy under TSX–spotlight data.

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Section: The Rcs Features Of the Cr Array In Multi-resource Sar 41 Th...mentioning

confidence: 99%