With the development of satellite miniaturization technology and remote sensing technology, the rapid deployment and application of microsatellite constellations is an inevitable trend. Due to the limitations of size, weight, and power (SWaP), onboard storage systems with high scalability, high performance, and high reliability remain one of the technical bottlenecks for remote sensing microsatellites. Based on commercial off-the-shelf (COTS) field-programmable gate arrays (FPGAs) and memory devices, this paper proposes a compact Spaceborne Advanced Storage System (SASS) design. This design provides multi-input multi-output caching technology based on dynamic programming scheduling and queue scheduling for multi-channel payload data of microsatellites, along with a high-speed, highly reliable NAND flash controller. Experimental results show that SASS has excellent scalability, supports multi-channel data scheduling and storage, and is compatible with different types of remote sensing satellites. Its maximum data writing speed can reach 2429 Mb/s, and in the event of a single NAND flash failure, the data writing speed can still retain at least 78.53%. The dynamic programming scheduling and queue scheduling effectively shorten the data scheduling time and improve the real-time performance of data scheduling. The proposed data remapping method reduces NAND flash data residency errors by at least 50.73%, and the storage bit error rate is reduced by at least 37.80%.
Microsatellites;Onboard Advanced Storage System;Scalability;Performance;Reliability
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Shilei TU1,2，Huiquan WANG1,2，Yue HUANG1,2，Zhonghe JIN1,2
Affiliations:
1Zhejiang University Microsatellite Research Center, Hangzhou, China, 310027
2Zhejiang Provincial Key Laboratory of Micro-Nano Satellites, Hangzhou, China, 310027
Citation Format:
Shilei TU, Huiquan WANG, Yue HUANG, Zhonghe JIN, 2024. A spaceborne advanced storage system for remote sensing microsatellites. Frontiers of Information Technology & Electronic Engineering, 25(4):600-615.
https://doi.org/10.1631/FITEE.2200445
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Frontiers of Information Technology & Electronic Engineering (abbreviated as FITEE, ISSN 2095-9184, CN 33-1389/TP) is a comprehensive English academic monthly journal in the field of information electronics, indexed by SCI-E and EI,
with the latest impact factor of 3.0, positioned in the JCR Q2 zone. It was formerly known as the English version of the Journal of Zhejiang University C: Computer and Electronics, established in 2010, and was renamed in 2015. It is now a sub-journal of the Chinese Academy of Engineering in the field of information and electronic engineering, covering computer, information and communication, control, electronics, optics, and other fields. Article types include research papers, reviews, personal viewpoints, and commentaries. The current editor-in-chief is Academician Pan Yunhe and Fei Aiguo. The journal implements an international peer review system, and initial feedback is generally provided within 2-3 months. Once accepted, articles will be published online quickly.
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