Calculation and Measurement of Near-Field RCS and Received Power Using a Downscaled Model of Precision-Guided Munition
This paper proposes a method for calculating received power using a downscaled model of an encounter scenario between a precision-guided munition (PGM) and a target by analyzing the near-field gain and near-field radar cross-section (RCS). Measuring the reflective properties between actual-sized tar...
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| Format: | Article |
| Language: | English |
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The Korean Institute of Electromagnetic Engineering and Science
2025-07-01
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| Series: | Journal of Electromagnetic Engineering and Science |
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| Online Access: | https://www.jees.kr/upload/pdf/jees-2025-4-r-309.pdf |
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| author | Kyuhwan Hwang Daeyeong Yoon Kyounghwan Jo Hyounjoon Joo Inbok Kim Honghee Kim Hongsun Yoon Jeongsub Kim Yong Bae Park |
| author_facet | Kyuhwan Hwang Daeyeong Yoon Kyounghwan Jo Hyounjoon Joo Inbok Kim Honghee Kim Hongsun Yoon Jeongsub Kim Yong Bae Park |
| author_sort | Kyuhwan Hwang |
| collection | DOAJ |
| description | This paper proposes a method for calculating received power using a downscaled model of an encounter scenario between a precision-guided munition (PGM) and a target by analyzing the near-field gain and near-field radar cross-section (RCS). Measuring the reflective properties between actual-sized targets and PGMs is a very costly and time-consuming process. Therefore, to facilitate such measurements even in a simple laboratory environment, the target encounter scenario is configured using a fixed target and a moving horn antenna in this study. The near-field gain is calculated based on the horn antenna’s physical dimensions, which varied with its distance from the target. Meanwhile, the near-field RCS is analyzed based on the magnitude of the Poynting vector, obtained through High Frequency Structure Simulator (HFSS) shooting and bouncing ray plus (SBR+) simulation. The received power is calculated by substituting the analyzed near-field gain and near-field RCS into the radar equation. In addition, the received power attained using the proposed method is compared to that obtained using far-field gain and far-field RCS, the power obtained through SBR+ simulation, and the power measured in a simple laboratory environment. An error of only 1–2 dB is observed compared to the SBR+ simulation and measured data, thereby validating the proposed downscaled model as well as the method proposed for calculating near-field gain and near-field RCS. |
| format | Article |
| id | doaj-art-84c5d05ad4e842119723e7894b7ef8ef |
| institution | Kabale University |
| issn | 2671-7255 2671-7263 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | The Korean Institute of Electromagnetic Engineering and Science |
| record_format | Article |
| series | Journal of Electromagnetic Engineering and Science |
| spelling | doaj-art-84c5d05ad4e842119723e7894b7ef8ef2025-08-20T03:40:30ZengThe Korean Institute of Electromagnetic Engineering and ScienceJournal of Electromagnetic Engineering and Science2671-72552671-72632025-07-0125438139010.26866/jees.2025.4.r.3093748Calculation and Measurement of Near-Field RCS and Received Power Using a Downscaled Model of Precision-Guided MunitionKyuhwan Hwang0Daeyeong Yoon1Kyounghwan Jo2Hyounjoon Joo3Inbok Kim4Honghee Kim5Hongsun Yoon6Jeongsub Kim7Yong Bae Park8 Department of AI Convergence Network, Ajou University, Suwon, Korea Antenna R&D, LIG NEX1, Yongin, Korea Missile Systems Core Tech R&D Institute, LIG NEX1, Seongnam, Korea Missile Systems Core Tech R&D Institute, LIG NEX1, Seongnam, Korea Missile Systems Core Tech R&D Institute, LIG NEX1, Seongnam, Korea Missile Systems Core Tech R&D Institute, LIG NEX1, Seongnam, Korea Missile Systems Core Tech R&D Institute, LIG NEX1, Seongnam, Korea Missile Systems Core Tech R&D Institute, LIG NEX1, Seongnam, Korea Department of AI Convergence Network, Ajou University, Suwon, KoreaThis paper proposes a method for calculating received power using a downscaled model of an encounter scenario between a precision-guided munition (PGM) and a target by analyzing the near-field gain and near-field radar cross-section (RCS). Measuring the reflective properties between actual-sized targets and PGMs is a very costly and time-consuming process. Therefore, to facilitate such measurements even in a simple laboratory environment, the target encounter scenario is configured using a fixed target and a moving horn antenna in this study. The near-field gain is calculated based on the horn antenna’s physical dimensions, which varied with its distance from the target. Meanwhile, the near-field RCS is analyzed based on the magnitude of the Poynting vector, obtained through High Frequency Structure Simulator (HFSS) shooting and bouncing ray plus (SBR+) simulation. The received power is calculated by substituting the analyzed near-field gain and near-field RCS into the radar equation. In addition, the received power attained using the proposed method is compared to that obtained using far-field gain and far-field RCS, the power obtained through SBR+ simulation, and the power measured in a simple laboratory environment. An error of only 1–2 dB is observed compared to the SBR+ simulation and measured data, thereby validating the proposed downscaled model as well as the method proposed for calculating near-field gain and near-field RCS.https://www.jees.kr/upload/pdf/jees-2025-4-r-309.pdfgainnear-fieldradar equationrcsreceived power |
| spellingShingle | Kyuhwan Hwang Daeyeong Yoon Kyounghwan Jo Hyounjoon Joo Inbok Kim Honghee Kim Hongsun Yoon Jeongsub Kim Yong Bae Park Calculation and Measurement of Near-Field RCS and Received Power Using a Downscaled Model of Precision-Guided Munition Journal of Electromagnetic Engineering and Science gain near-field radar equation rcs received power |
| title | Calculation and Measurement of Near-Field RCS and Received Power Using a Downscaled Model of Precision-Guided Munition |
| title_full | Calculation and Measurement of Near-Field RCS and Received Power Using a Downscaled Model of Precision-Guided Munition |
| title_fullStr | Calculation and Measurement of Near-Field RCS and Received Power Using a Downscaled Model of Precision-Guided Munition |
| title_full_unstemmed | Calculation and Measurement of Near-Field RCS and Received Power Using a Downscaled Model of Precision-Guided Munition |
| title_short | Calculation and Measurement of Near-Field RCS and Received Power Using a Downscaled Model of Precision-Guided Munition |
| title_sort | calculation and measurement of near field rcs and received power using a downscaled model of precision guided munition |
| topic | gain near-field radar equation rcs received power |
| url | https://www.jees.kr/upload/pdf/jees-2025-4-r-309.pdf |
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