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http://dx.doi.org/10.5139/JKSAS.2010.39.1.56

Design and Implementation of Carrier Recovery Loop for Satellite Telemetry and Tracking & Command  

Lee, Jung-Su (한국과학기술원 인공위성연구센터)
Oh, Chi-Wook (한국과학기술원 인공위성연구센터)
Seo, Gyu-Jae (한국과학기술원 인공위성연구센터)
Oh, Seung-Han (한국과학기술원 인공위성연구센터)
Chae, Jang-Soo (한국과학기술원 인공위성연구센터)
Myung, Noh-Hoon (한국과학기술원 인공위성연구센터)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.39, no.1, 2011 , pp. 56-62 More about this Journal
Abstract
A Satellite transponder is mounted on the Satellite and performs radio communications with the ground station. A Digital transponder compared to The analog transponder is made easy and accurate performance prediction. Also Modulation Scheme, Data Rate, Loop Bandwidth, Modulation Index and etc. can be changed on orbit, by implementing FPGA can reduce the weight and volume. The core technology of digital transponder is Carrier Recovery loop. Dynamic Range, Frequency Tracking Range, Frequency Tracking Rate and Coherent performance are determined by the performance of the Carrier Recovery loop. In this paper, we proposed the structure of Carrier Recovery loop for the Satellite digital transponder, then tested and verified the structure.
Keywords
Carrier Recovery loop; Transponder;
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