标准编号：ISO 20207:2015
中文名称：空间数据和信息传输系统 ETSI DVB-S2标准上CCSDS空间链路协议
英文名称：Space data and information transfer systems — CCSDS Space Link Protocols over ETSI DVB-S2 Standard
发布日期：2015-08
标准范围
The DVB-S2 standard (reference [1]) proposes advanced modulation techniques (QPSK,8PSK, 16APSK, and 32APSK) and a wide range of coding rates (from 1/4 to 9/10) withnear-Shannon coding schemes (LDPC codes). This high number of modulation and codingschemes allows a wide range of possibilities to satisfy specific mission constraints.Moreover, to maximize the telemetry system throughput, it appears possible to adapt thetransmitted waveform (and the useful data rate) to the variable conditions of the link. TheDVB-S2 standard can actually implement Variable Coding and Modulation (VCM) mode,which adapts the transmission scheme to the channel conditions following a predeterminedschedule (for example, following a dynamic link budget). When a channel is available toprovide feedback (e.g., via a telecommand link), the transmission scheme can be dynamicallyadjusted using the Adaptive Coding and Modulation (ACM) mode.The use of the DVB-S2 standard for telemetry makes possible the use of generic Very HighScale Integrated Circuits (VHSIC) Hardware Description Language (VHDL) IntellectualProperty (IP) modules for developments. The use of a widely implemented standardsimplifies finding transmitting or receiving equipment to check compatibility. Finally, for theground part, some telecom DVB-S2 receivers or Application Specific Integrated Circuits(ASICs) developed for the telecom market could be reused.This Recommended Standard is an adaptation profile describing how to use the DVB-S2standard to transmit CCSDS Transfer Frames for telemetry purpose. The interface betweenCCSDS and DVB-S2 is based on the Attached Synchronization Marker (ASM) and ChannelAccess Data Unit (CADU) already introduced in reference [2].
立即下载标准文件