一种基于CCSDS AOS协议的分包遥测调度算法
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摘要
目前,大部分航天器都采用了基于CCSDS协议体系的分包遥测体制,具有较好的灵活性及较高的信道利用率。但是,传统的分包遥测体制大多只利用了协议体系中的包多路复用机制,在某些应用场景下,对下行遥测数据流的控制能力显得不足。提出了一种充分利用CCSDSAOS协议信道两级复用机制的遥测数据同步调度算法,在包调度层面进行分系统遥测帧速率控制,在虚拟信道层面进行系统遥测速率控制。相比传统的分包遥测体制,本算法具有更强的灵活性。通过仿真验证了算法的可行性。
At present, most of the spacecraft adopts the packet telemetry system based on CCSDS protocol system. The packet telemetry system has good flexibility and high physical channel utilization. However, most of the traditional packet telemetry systems only use packet multiplexing mechanism. In some application scenarios, the downlink telemetry data control ability of this system is insufficient. A kind of telemetry data synchronization scheduling algorithm which makes full use of the two level channel multiplexing mechanism of CCSDS AOS protocol is put forward. The subsystem telemetry frame rate control is realized in packet multiplexing layer and the system telemetry frame rate control is realized in virtual channel multiplexing layer. Compared with the traditional packet telemetry system, this algorithm has more flexibility. The algorithm has been realized by Verilog HDL code. The feasibility of the algorithm is also verified.
At present, most of the spacecraft adopts the packet telemetry system based on CCSDS protocol system. The packet telemetry system has good flexibility and high physical channel utilization. However, most of the traditional packet telemetry systems only use packet multiplexing mechanism. In some application scenarios, the downlink telemetry data control ability of this system is insufficient. A kind of telemetry data synchronization scheduling algorithm which makes full use of the two level channel multiplexing mechanism of CCSDS AOS protocol is put forward. The subsystem telemetry frame rate control is realized in packet multiplexing layer and the system telemetry frame rate control is realized in virtual channel multiplexing layer. Compared with the traditional packet telemetry system, this algorithm has more flexibility. The algorithm has been realized by Verilog HDL code. The feasibility of the algorithm is also verified.
引文
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[3]郑娟,祝彬,陆静,等.AOS(高级在轨系统)协议跟踪研究[J].航天标准化,2016(4):33-38.
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[5]杜冬梅.航天器CCSDS遥测数据包处理方法研究[J].电讯技术,2007,47(2):1760-180
[6]姜昌.分包遥测、遥控与AOS设计思想初探[J].飞行器测控学报,1996,15(3):5-13.
[7]谭维炽,顾莹琦.空间数据系统[M].北京:中国科学技术出版社,2004:5-20.
[8]吴友华,叶建芳.基于分包体制的卫星遥测信息流设计[J].信息技术,2013(12):117-120.
[9]何涛,周依林,白雪柏.低轨卫星可控式冗余分包遥测技术[J].飞行器测控学报,2014,33(4):290-295.
[2]CCSDS.CCSDS130.0-G-1,Overview of Space Link Protocols[S].2001.
[3]郑娟,祝彬,陆静,等.AOS(高级在轨系统)协议跟踪研究[J].航天标准化,2016(4):33-38.
[4]蒋迎春.CCSDS空间数据通信协议研究及其OPNET仿真[D].长沙:国防科学技术大学,2005:5-6.
[5]杜冬梅.航天器CCSDS遥测数据包处理方法研究[J].电讯技术,2007,47(2):1760-180
[6]姜昌.分包遥测、遥控与AOS设计思想初探[J].飞行器测控学报,1996,15(3):5-13.
[7]谭维炽,顾莹琦.空间数据系统[M].北京:中国科学技术出版社,2004:5-20.
[8]吴友华,叶建芳.基于分包体制的卫星遥测信息流设计[J].信息技术,2013(12):117-120.
[9]何涛,周依林,白雪柏.低轨卫星可控式冗余分包遥测技术[J].飞行器测控学报,2014,33(4):290-295.