上行遥控是卫星测控管理的一项重要工作,其主要任务是控制载荷工作或实施平台管理。针对低轨卫星在轨管理中实施遥控任务时人工干预多、风险高的问题,提出了基于SCL(Spacecraft Control Language,航天器控制语言)的遥控作业自动安全可...上行遥控是卫星测控管理的一项重要工作,其主要任务是控制载荷工作或实施平台管理。针对低轨卫星在轨管理中实施遥控任务时人工干预多、风险高的问题,提出了基于SCL(Spacecraft Control Language,航天器控制语言)的遥控作业自动安全可靠运行实现方法,应用于低轨卫星管理的结果表明:该方法有效降低了管理风险,提高了卫星测控实施效率和自动化水平,同时对提高低轨卫星自动化和精细化管理有着重要意义。展开更多
This research paper describes the design and implementation of the Consultative Committee for Space Data Systems (CCSDS) standards REF _Ref401069962 \r \h \* MERGEFORMAT [1] for Space Data Link Layer Protocol (SDLP). ...This research paper describes the design and implementation of the Consultative Committee for Space Data Systems (CCSDS) standards REF _Ref401069962 \r \h \* MERGEFORMAT [1] for Space Data Link Layer Protocol (SDLP). The primer focus is the telecommand (TC) part of the standard. The implementation of the standard was in the form of DLL functions using C++ programming language. The second objective of this paper was to use the DLL functions with OMNeT++ simulating environment to create a simulator in order to analyze the mean end-to-end Packet Delay, maximum achievable application layer throughput for a given fixed link capacity and normalized protocol overhead, defined as the total number of bytes transmitted on the link in a given period of time (e.g. per second) divided by the number of bytes of application data received at the application layer model data sink. In addition, the DLL was also integrated with Ground Support Equipment Operating System (GSEOS), a software system for space instruments and small spacecrafts especially suited for low budget missions. The SDLP is designed for rapid test system design and high flexibility for changing telemetry and command requirements. GSEOS can be seamlessly moved from EM/FM development (bench testing) to flight operations. It features the Python programming language as a configuration/scripting tool and can easily be extended to accommodate custom hardware interfaces. This paper also shows the results of the simulations and its analysis.展开更多
文摘上行遥控是卫星测控管理的一项重要工作,其主要任务是控制载荷工作或实施平台管理。针对低轨卫星在轨管理中实施遥控任务时人工干预多、风险高的问题,提出了基于SCL(Spacecraft Control Language,航天器控制语言)的遥控作业自动安全可靠运行实现方法,应用于低轨卫星管理的结果表明:该方法有效降低了管理风险,提高了卫星测控实施效率和自动化水平,同时对提高低轨卫星自动化和精细化管理有着重要意义。
文摘This research paper describes the design and implementation of the Consultative Committee for Space Data Systems (CCSDS) standards REF _Ref401069962 \r \h \* MERGEFORMAT [1] for Space Data Link Layer Protocol (SDLP). The primer focus is the telecommand (TC) part of the standard. The implementation of the standard was in the form of DLL functions using C++ programming language. The second objective of this paper was to use the DLL functions with OMNeT++ simulating environment to create a simulator in order to analyze the mean end-to-end Packet Delay, maximum achievable application layer throughput for a given fixed link capacity and normalized protocol overhead, defined as the total number of bytes transmitted on the link in a given period of time (e.g. per second) divided by the number of bytes of application data received at the application layer model data sink. In addition, the DLL was also integrated with Ground Support Equipment Operating System (GSEOS), a software system for space instruments and small spacecrafts especially suited for low budget missions. The SDLP is designed for rapid test system design and high flexibility for changing telemetry and command requirements. GSEOS can be seamlessly moved from EM/FM development (bench testing) to flight operations. It features the Python programming language as a configuration/scripting tool and can easily be extended to accommodate custom hardware interfaces. This paper also shows the results of the simulations and its analysis.
