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J Electromagn Eng Sci > Volume 17(3); 2017 > Article
Journal of Electromagnetic Engineering and Science 2017;17(3):120-125.
DOI: https://doi.org/10.5515/JKIEES.2017.17.3.120    Published online July 31, 2017.
Monopulse Tracking Performance of a Satcom Antenna on a Moving Platform
Gyuhan Cho, Gwang Tae Kim
Agency for Defense Development, Daejeon, Korea.
Correspondence:  Gyuhan Cho,Email: gyuhan.cho@gmail.com
Received: 17 January 2017   • Revised: 21 April 2017   • Accepted: 24 May 2017
Abstract
A satellite communication (Satcom) antenna mounted on a moving platform provides a controlled heading that enables a geosynchronous satellite to communicate with the ground. A monopulse tracking method is effective for antenna control on a vehicle when it vibrates severely. However, this method has unexpected obstacles and its control performance is insufficient. To improve its control performance, the control command and monopulse error, the signal delay, and the radome effect are evaluated through tests. The authors then propose a method to transform the antenna error from 3D coordinates to 2D antenna coordinates. As a result, the antenna control performance is improved. As indicated in this study, examining antenna systems using the monopulse method on moving platforms is possible by understanding the antenna test process.
Key words: Geosynchronous Satellites, Inertially Stabilized Platform, Monopulse Signal, Moving Platform, Radome, Satcom Antenna
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