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 precisionguided 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 targ...

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Vydané v:Journal of Electromagnetic Engineering and Science Ročník 25; číslo 4; s. 381 - 390
Hlavní autori: Hwang, Kyuhwan, Yoon, Daeyeong, Jo, Kyounghwan, Joo, Hyounjoon, Kim, Inbok, Kim, Honghee, Yoon, Hongsun, Kim, Jeongsub, Park, Yong Bae
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: The Korean Institute of Electromagnetic Engineering and Science 01.07.2025
한국전자파학회
Predmet:
gain
near-field
radar equation
rcs
received power
전자/정보통신공학
ISSN:2671-7255, 2671-7263
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Popis
Shrnutí:This paper proposes a method for calculating received power using a downscaled model of an encounter scenario between a precisionguided 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.
ISSN:2671-7255
2671-7263
DOI:10.26866/jees.2025.4.r.309