A TRADE-OFF ANALYSIS BETWEEN S AND KU BAND TCR SUBSYSTEMS IN COMMERCIAL SATELLITES

Erdem Demircioglu
1.463 330

Abstract


Telemetry, Command and Ranging (TCR) subsystem has a vital role in commercial satellite operations independent of satellite payload such as broadcasting, optical, navigation and remote sensing. This subsystem securely establishes the communication link between ground station and satellite. TCR link has to be operational and healthy during all satellite lifetime and phases. In order to efficiently design TCR subsystem, some trade-offs must be applied to finalize the subsystem architecture. A critical decision point appears with the subsystem frequency band selection. S-band and Ku-band systems behave distinctly according to satellite mission. Commercial satellites can be classified into communication, imaging, weather, remote sensing and navigation. Commercial communication satellites cover the 40% of the overall market where satellite manufacturers aim to reduce design, integration and test cost by applying appropriate trade-offs before finalizing design phase. In this study, trade-off analysis between S and Ku-band TCR subsystem is investigated in terms of applied communication link margins and integration of the subsystem with satellite payload. The trade-off analysis show that Ku-band provides 3.87dB margin for telecommand (TC) and 24.92dB margin for telemetry (TM) links. S-band offers 45.74dB margin for TC and 30.42dB margin for TM links.

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References


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