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http://dx.doi.org/10.7840/KICS.2011.36A.5.529

Verification of the Possibility for Overcoming HF Skip Zone through NVIS communications  

Lee, Myung-Noh (명지대학교 정보통진공학과)
Yoo, Jae-Young (육군정보통신학교)
Rhee, Jong-Myung (명지대학교 정보통진공학과)
Abstract
The HF communication method is capable of communicating short and long distances without a separate relaying method and is used as the primary/secondary communication method in other nations. However, the Korean military strongly discouraged the use of the method due to issues regarding the skip zone and the fact that the usable frequency changes according to irregularities in the ionosphere. The NVIS communication is less susceptible to noise than typical communications using ionosphere reflection, and is also able to communicate short distances containing skip zones. In this paper, we inspect the NVIS communication methods of foreign nations in order to facilitate the use of HF communications, as well as provide solutions to the issues mentioned above. This paper explains the concept of NVIS communication, and investigates how the Korean military is implementing HF communications based on actual communications data of military corps. Based on this result, we have verified the possibility of overcoming skip zones through NVIS communications, and have considered the applicability of a prediction program in order to enhance the efficiency of HF communications.
Keywords
NVIS; HF; Skip Zone; Communication; Ionosphere;
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