| Development of an RF Signal Level Prediction Simulator for Radiowave Propagation in Natural Environments |
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Jong-Chul Hyun, Sang-Keun Kim, Yi-Sok Oh, Dong-Soo Seo, Heung-Bum Kim |
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| 비행체의 원격신호측정을 위한 전파환경을 고려한 RF 수신신호 예측 시뮬레이터 개발 |
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현종철, 김상근, 오이석, 서동수, 김흥범 |
1LIG넥스원
2홍익대학교 전자전기공학부
3국방과학연구소 |
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| Abstract |
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A simulator is proposed in this paper for predicting the RF signal level after propagating over sea and land surfaces. Various sea and land types and transmit/receive antenna patterns, as well as the locus of the transmit antenna, are considered for this simulator. At first, microwave reflection characteristics of various sea surfaces have been computed, based on an empirical formula which is developed in this study for the relation between the sea surface roughness and wind speed. Then, microwave reflections from land surfaces such as forests, agricultural areas, and bare surfaces, are computed using the first-order vector radiative transfer theory. Finally, the signal paths over sea and land surfaces are found using the ray tracing technique and the digital elevation model, and the signal level received by a receiving antenna is computed by the using the reflection coefficients of sea and land surfaces and the signal paths. |
| Key Words:
Ray Tracing, Radiative Transfer, Plume, Simulator |
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