极化复用方式下高性能数传基带奇偶合路实时处理方法

张鑫宇; 杨甲森; 张雪丰; 徐聪; 陈志敏; 智佳; 陈托

doi:10.11728/cjss2022.06.211125125

极化复用方式下高性能数传基带奇偶合路实时处理方法

doi: 10.11728/cjss2022.06.211125125

张鑫宇^{1, 2},
杨甲森^1,,
张雪丰^{1, 2},
徐聪^{1, 2},
陈志敏¹,
智佳¹,
陈托¹

1.
中国科学院国家空间科学中心　北京　100190
2.
中国科学院大学　北京　100049

基金项目: 空间科学先导专项科学卫星任务运控技术项目资助（XDA15040100）

详细信息

作者简介:
杨甲森：E-mail：jsy@nssc.ac.cn

中图分类号: TP391
计量
- 文章访问数: 58
- HTML全文浏览量: 24
- PDF下载量: 13
- 被引次数: 0
出版历程
- 收稿日期: 2021-11-25
- 录用日期: 2022-01-05
- 修回日期: 2022-04-15
- 网络出版日期: 2022-11-21

High Performance Real-time Odd-even Channels Combination Algorithm for Transmission Baseband Data Using Dual-polarized Technology

ZHANG Xinyu^{1, 2},
YANG Jiasen^1
,,
ZHANG Xuefeng^{1, 2},
XU Cong^{1, 2},
CHEN Zhimin¹,
ZHI Jia¹,
CHEN Tuo¹

1.
National Space Science Center, Chinese Academy of Sciences, Beijing 100190
2.
University of Chinese Academy of Sciences, Beijing 100049

摘要

摘要: 数传基带奇偶合路实时处理，是极化复用方式下卫星过境弧段即时判读星载设备状态及获取空间科学探测成果的前提和基础。面向空间科学卫星高速数传实时处理需求，针对传统合路处理方法受限于内存拷贝与排序操作导致处理性能较低的问题，提出一种使用环形队列对数据进行内存管理并基于各虚拟信道奇偶单路传输帧计数自然有序特征进行合路处理的新方法，有效规避频繁的内存移动与复杂耗时的排序操作，显著提升奇偶合路实时处理性能。空间科学卫星任务的工程实践结果表明，所提方法的实时合路性能满足ASO-S卫星1 Gbit·s^–1和CASEarth卫星1.6 Gbit·s^–1的高速数传实时处理需求。
- 极化复用 /
- 奇偶合路实时处理 /
- 环形队列 /
- ASO-S /
- CASEarth
Abstract: Odd-even frames real-time combination for transmission baseband data which used dual-polarized technology is the prerequisite and basis for timely monitoring of satellite equipment status when the satellite is in transit arc and early access to scientific exploration data by satellite ground application system. A high performance real-time odd-even channels combination algorithm for transmission baseband data which uses dual-polarized technology is proposed to meet the need of scientific satellite real-time high-speed data processing. This method makes full use of the naturally ordered frame counting feature of each virtual channel and applies the circular memory management design of circular queue. Therefore, this method effectively avoids the time-consuming sort and frequent memory moving operations compared to traditional algorithms. The space science satellites’ engineering practice shows that the speed of combination meets ASO-S’s 1 Gbit s^–1 and CASEarth’s 1.6 Gbit s^–1 real-time processing requirements.
- Dual-polarized technology /
- Real-time odd-even channels combination /
- Circular queue /
- ASO-S /
- CASEarth

HTML全文

图 1 极化复用方式下空间段与地面段数传处理流程

Figure 1. Processing flow of space segment and ground segment data using dual-polarized technology

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图 2 CCSDS AOS传输帧格式

Figure 2. CCSDS AOS transmission frame format

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图 3 奇偶合路实时处理方法工作原理

Figure 3. Odd-even frames real-time combination method framework

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图 4 奇偶合路处理流程设计

Figure 4. Processing flow of odd-even frames combination

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图 5 环形队列结构设计

Figure 5. Structure of circular queue

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图 6 奇偶合路处理算法设计

Figure 6. Odd-even channels combination algorithm

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图 7 不同缓冲申请容量可容忍的最大时延

Figure 7. Maximum tolerable delay of different buffer capacity

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表 1 测试数据统计

Table 1. Statistics of test data

通道	文件大小 /GByte	同步码计数	填充信道帧第一帧计数	实时工程参数帧计数	回放工程参数帧计数	载荷科学数据帧计数
奇路	29	29 959 953	813	1502	71 225	10 983 970
偶路	29	29 925 282	69 682	1502	71 225	10 983 970

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参考文献(10)

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