Abstract
With the development of satellite miniaturization and remote sensing, the establishment of microsatellite constellations is an inevitable trend. Due to their limited size, weight, and power, spaceborne storage systems with excellent scalability, performance, and reliability are still one of the technical bottlenecks of remote sensing microsatellites. Based on the commercial off-the-shelf field-programmable gate array and memory devices, a spaceborne advanced storage system (SASS) is proposed in this paper. This work provides a dynamic programming, queue scheduling multiple-input multiple-output cache technique and a high-speed, high-reliability NAND flash controller for multiple microsatellite payload data. Experimental results show that SASS has outstanding scalability with a maximum write rate of 2429 Mb/s and preserves at least 78.53% of the performance when a single NAND flash fails. The scheduling technique effectively shortens the data scheduling time, and the data remapping method of the NAND flash controller can reduce the retention error by at least 50.73% and the program disturbance error by at least 37.80%.
摘要
随着卫星小型化技术和遥感技术的发展, 微纳卫星星座的快速部署与应用是必然趋势。由于体积、重量和功率 (SWaP) 的限制, 具有高扩展性、高性能和高可靠性的星载存储系统仍然是遥感微纳卫星的技术瓶颈之一。基于商用现货 (COTS) 现场可编程门阵列(FPGA)和存储器件, 本文提出一种小型化星载先进存储系统(SASS)设计。该设计为微纳卫星多通道载荷数据提供了基于动态规划调度与队列调度的多输入多输出缓存技术和一种高速、高可靠性的 NAND flash 控制器。实验结果表明, SASS具有出色的可扩展性, 支持多通道数据调度与存储, 适配不同型号遥感卫星。其最大数据写入速率可达 2429 · Mb/s, 在单个 NAND flash故障时, 数据写入速率至少能保留78.53%。动态规划调度与队列调度有效缩短了数据调度时间, 提高数据调度实时性, 提出的数据重映射法使NAND flash数据驻留错误降低了至少 50.73%, 存储误码率降低了至少 37.80%。
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Data availability
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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Shilei TU and Huiquan WANG designed the research. Shilei TU and Yue HUANG processed the data. Shilei TU drafted the paper. Huiquan WANG and Zhonghe JIN offered advice. Shilei TU, Huiquan WANG, and Zhonghe JIN revised and finalized the paper.
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Zhonghe JIN is an editorial board member of Frontiers of Information Technology & Electronic Engineering, and he was not involved with the peer review process of this paper. All the authors declare that they have no conflict of interest.
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Project supported by the Fundamental Research Funds for the Zhejiang Provincial Universities, China (No. 2021XZZX038)
List of supplementary materials
Table S1 Bit definitions of user input interface configuration
Table S2 Bit definitions of user input status
Table S3 Bit definitions of queue scheduling instruction
Table S4 Hamming code codec process
Table S5 Payload matrix and parameters of different microsatellites
Fig. S1 Measured DDR3 access bandwidth
Fig. S2 Images used in the experiments
Fig. S3 Program disturbance BER at the room temperature
Fig. S4 Program disturbance BER at −30 °C
Fig. S5 Program disturbance BER at 60 °C
Fig. S6 Data retention BER at the room temperature
Fig. S7 Data retention BER during temperature cycling
Electronic Supplementary materials
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Tu, S., Wang, H., Huang, Y. et al. A spaceborne advanced storage system for remote sensing microsatellites. Front Inform Technol Electron Eng 25, 600–615 (2024). https://doi.org/10.1631/FITEE.2200445
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DOI: https://doi.org/10.1631/FITEE.2200445