The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 2025
Filed:
Dec. 12, 2022
Korea Aerospace Research Institute, Daejeon, KR;
Dong Hyun Kim, Daejeon, KR;
Do Chul Yang, Daejeon, KR;
Ho Ryung Jeong, Sejong-si, KR;
Doo Chun Seo, Daejeon, KR;
KOREA AEROSPACE RESEARCH INSTITUTE, Daejeon, KR;
Abstract
A method of calculating power level reflectance σof an object on the ground using synthetic aperture radar (SAR) image includes receiving the SAR image composed of pixels each having a complex value (I+jQ), local incidence angle data including local incidence angle values respectively corresponding to the pixels of the SAR image and a reflection coefficient Kof the SAR image, calculating power level reflectance βon a slant range domain of a first object corresponding to a first pixel based on the complex value (I+jQ) of the first pixel in the SAR image and the reflection coefficient K, and calculating, using an equation that σ=β·(sin θ), power level reflectance σof the first object on the ground based on the power level reflectance βof the first object on the slant range domain and the local incidence angle value θcorresponding to the first pixel.