تفاصيل الأوراق البحثية

Design Study for the Development of Channel Coding Layer for a Packet Telecommand Decoder Based on CCSDS Recommendations for Satellite Communication on FPGA

خلاصة البحث

In the Bus System of any Communication Satellite, there exists a Telecommand (TC) Subsystem which plays a critical role in ensuring that telecommands sent from the ground are correctly received, decoded, and processed by the satellite. Following the recommendations of the Consultative Committee for Space Data Systems (CCSDS), a layered model is used to design a decoder system for any Packet Telecommand Decoder (PTD), which is central to the Telecommand data process. The benefit of adhering to CCSDS standards is the ability to operate the satellite from any standardized CCSDS ground station, enhancing cross-support capabilities. This study aims to explore the development of the Channel Coding Layer according to CCSDS recommendations, with the focus on designing the programming logic for the decoder system, which manages services related to synchronization and error correction and detection in transmitted data. The paper details the algorithm design logic of two core elements within the layer: 1) the Finite State Machine (FSM) controller which provides synchronization services to control the layer’s decoding process 2) the Decoder, designed using Modified BCH (63,56) (Bose-Chaudhuri-Hocquenghem) code, which operates using single error correction and double error detection mode (SEC). The designed flowcharts and block diagrams illustrate the data flow and operational steps of the overall decoding process. This systematic approach to designing and organizing the decoding algorithm logic lays the groundwork for programming the channel coding layer using VHSIC Hardware Description Language (VHDL) and testing it on Field-Programmable Gate Array (FPGA) in future work. This paper uniquely addresses the gap between the CCSDS recommendations and the practical implementation by translating textual guidelines and recommendations into a structured, executable, and actionable design approach! It also implements and tests the state control logic algorithm modeled for the channel coding layer using VHDL.

الباحثون
سنة النشر
2024
مجالات البحث
الاتصالات عبر الأقمار الاصطناعية
الناشر
Space Research Conference
نوع البحث
مساهمة مؤتمر
الأبحاث ذات الصلة