THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Nov.; 26(11),

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1 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE Nov.; 26(11), ISSN (Print)ISSN X (Online) Analysis of Spatial Distributions of Rainfall Rate for Satellite Site Diversity in Korea 권용기 박정규 윤대환 노현준 박성천 이황재 Yong-Ki KwonJung-Kyu ParkDae-Whan YoonHyunjun NhoSungchun ParkWhangjae Lee 요약. 88, 5,. 4, /. Abstract This paper proposes appropriate locations for site diversity to provide stable satellite communication service in Korea. For this purpose, we analyzed rainfall rate data measured by KMA for 5 years at 88 sites, and the variations of simultaneous occurrence of rainfall rate in pairs of sites using the correlation coefficient. This paper provided contour maps of the spatial ditstribution of rainfall rate correlation, and proposed information on the optimum sites/regions for the operation of muti-uplink satellite systems, in 4 cities which were principal in field of satellite communication in Korea. Key words: Site Diversity, Satellite Communication, Rainfall Rate, Correlation Coefficient, Correlation Map. 서론 10 GHz. Ku (1214 GHz) Ka (2030 GHz),,. (site diversity), (UPC: Uplink Power Control). (UPC) 10 db. (UPC) (Technical Regulation Division, National Radio Research Agency) Manuscript received September 8, 2015 ; Revised October 19, 2015 ; Accepted November 9, (ID No ) Corresponding Author: Yong-Ki Kwon ( c Copyright The Korean Institute of Electromagnetic Engineering and Science. All Rights Reserved. 985

2 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 26, no. 11, Nov ,, ( 10 14) , , 2 4,, /. 3,.. 강우발생상관관계분석 2-1 강우데이터분석및처리 88 5( ) 1 24,. 43,824(= ()) 1, ( ) [1],[2]. i f i f (1) 88, 43,824.,,. 1, 0. (1) 0 1. (correlation coefficient) (SDI) [3],[4]. 88. () (2). (covariance),, (1),,. () =1, = 상관계수 () 의미 () (2) 986

3 .. (). (2) (3) [5]. (1),,,, N 43,824. () (3) (4).,,, 0 1 (4) (5). (3) 1. (4),., (5), (). (). 2-3 이격거리에따른강우발생상관성분석 ,828, mm/h, 10 mm/h (4) (5) (5) 1,., (),. (1) 0 그림 1. Fig. 1. Variations of correlation coefficient for distance. 987

4 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 26, no. 11, Nov ,.,,. 1 mm/h, 200 km 0.27, (±95 % ), 10 mm/h, 0.037, (±95 % ).,. /. 2-4 주요지점별강우발생상관성분석..,,,. / 4 (,,, )., (1), (2) 4,. 2(a), (b) 1 mm/h 10 mm/h. 그림 2. () Fig. 2. Correlation map(yong In). /. ( 112 km),. 1 mm/h 0.29( 2(a)), 10 mm/h 0.013( 2(b)). 988

5 . 1 mm/h 20 %, 10 mm/h 1 %. 3(a), (b) 1 mm/h 10 mm/h. 4(a), (b) 1 mm/h 10 mm/h., 그림 3. () Fig. 3. Correlation map(kum San). 그림 4. () Fig. 4. Correlation map(dae Jeon). 989

6 THE JOURNAL OF KOREAN INSTITUTE OF ELECTROMAGNETIC ENGINEERING AND SCIENCE. vol. 26, no. 11, Nov %, 10 mm/h 1 %. 5(a), (b) 1 mm/ h 10 mm/h.,,.,.. 결론 그림 5. () Fig. 5. Correlation map(seoul)..,. 1 mm/h,. 88, 5, 4 (,,, )..,. (site diversity), (system availability).. References [1] L. Ordano, "Assessment of correlation properties of rain- 990

7 fall intensity measured in Italy", 5th International Conference on Antennas and Propagation, ICAP 87, pp , Mar [2] Contribution Document 3J/175 for the 2007 ITU-R WP 3J meeting from Spain "Spatial distributions of rainfall rate", Swiss, Apr [3] F. Barbaliscia, G. Ravaioli, and A. Paraboni, "Characteristics of the spatial statistical dependence of rainfall rates over large areas", IEEE Transactions on Antennas and Propagation, [4] H. Fukuchi, "Correlation properties of rainfall rates in the United Kingdom", IEE Proceedings, [5] correlation_coefficient : ( ) : ( ) : () : [ 주관심분야 ],, : () : [ 주관심분야 ], THz, : ( ) : ( ) : [ 주관심분야 ], EMC, : ( ) : () : ( ) : () : [ 주관심분야 ], THz, : () : : [ 주관심분야 ], THz, : () : () :, [ 주관심분야 ], 991

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