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Measurements on the Propagation Path Loss Exponent at Maritime VHF Channel Using Single Carrier Signal
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 Title & Authors
Measurements on the Propagation Path Loss Exponent at Maritime VHF Channel Using Single Carrier Signal
Kim, Seung-Geun; Kim, Sea-Moon; Yun, Changho; Lim, Yong-Kon;
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The received signal strengths according to the propagation distance between a transmitting shore station with a 53 m antenna hight and a receiving ship station with about 6m antenna hight from 700 m upto about 20 km are measured at ship's moving velocity of using a single carrier signal at 150.0625MHz. In this paper, the path loss exponents at the propagation distance from 700 m to 20km are estimated via minimum-mean-square-error method using the measurements of the received signal strength, and the mean of the estimated path loss exponent become 3.79. The estimated propagation path loss exponents is similar to that calculated based on the field-strength values from 2 km to 20 km in Annex 2 of ITU-R P.1546-4, which is measuring results at maritime VHF at 100 MHz carrier frequency. Therefore, the estimated propagation path loss exponent shall be used as the expected path loss exponents for summer in costal area of South Sea of Korea.
Path Loss;Maritime VHF Channel;Channel Measurement;Maritime Mobile;Sea Reflection;
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해상 초단파 대역 디지털 데이터 통신을 위한 선박 애드혹 네트워크의 실해역 실증 연구,윤창호;김승근;조아라;임용곤;

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