Unpyo Hong

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The satellites of the German National Program are two identical military communication systems providing SHF and UHF communication services. The paper will focus on the SHF antenna farm which was developed, manufactured and tested at EADS Astrium GmbH. After an outline of all antennas on the German National Program satellites, the qualification and RF(More)
This paper describes the design and operational validation of the X-Band acquisition aid system (XAA) installed and used in the ESTRACK LEOP network. The purpose of this acquisition aid antenna is to provide a wider X-band beam than the 15m main antenna during the first critical acquisition phase after orbit injection. The paper describes the design and(More)
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