{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,24]],"date-time":"2026-03-24T16:06:23Z","timestamp":1774368383294,"version":"3.50.1"},"reference-count":52,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2023,6,1]],"date-time":"2023-06-01T00:00:00Z","timestamp":1685577600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["2021YFA0715204"],"award-info":[{"award-number":["2021YFA0715204"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["2018-JCJQ-ZQ-046"],"award-info":[{"award-number":["2018-JCJQ-ZQ-046"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["SAST2021-040"],"award-info":[{"award-number":["SAST2021-040"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"name":"China ZYQN Program","award":["2021YFA0715204"],"award-info":[{"award-number":["2021YFA0715204"]}]},{"name":"China ZYQN Program","award":["2018-JCJQ-ZQ-046"],"award-info":[{"award-number":["2018-JCJQ-ZQ-046"]}]},{"name":"China ZYQN Program","award":["SAST2021-040"],"award-info":[{"award-number":["SAST2021-040"]}]},{"name":"Foundation","award":["2021YFA0715204"],"award-info":[{"award-number":["2021YFA0715204"]}]},{"name":"Foundation","award":["2018-JCJQ-ZQ-046"],"award-info":[{"award-number":["2018-JCJQ-ZQ-046"]}]},{"name":"Foundation","award":["SAST2021-040"],"award-info":[{"award-number":["SAST2021-040"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Advancements in remote sensing technology and very-large-scale integrated circuit (VLSI) have significantly augmented the real-time processing capabilities of spaceborne synthetic aperture radar (SAR), thereby enhancing terrestrial observational capacities. However, the inefficiency of voluminous data storage and transfer inherent in conventional methods has emerged as a technical hindrance, curtailing real-time processing within SAR imaging systems. To address the constraints of a limited storage bandwidth and inefficient data transfer, this study introduces a three-dimensional cross-mapping approach premised on the equal subdivision of sub-matrices utilizing dual-channel DDR3. This method considerably augments storage access bandwidth and achieves equilibrium in two-dimensional data access. Concurrently, an on-chip data transfer approach predicated on a superscalar pipeline buffer is proposed, mitigating pipeline resource wastage, augmenting spatial parallelism, and enhancing data transfer efficiency. Building upon these concepts, a hardware architecture is designed for the efficient storage and transfer of SAR imaging system data, based on the superscalar pipeline. Ultimately, a data storage and transfer engine featuring register addressing access, configurable granularity, and state monitoring functionalities is realized. A comprehensive imaging processing experiment is conducted via a \u201cCPU + FPGA\u201d heterogeneous SAR imaging system. The empirical results reveal that the storage access bandwidth of the proposed superscalar pipeline-based SAR imaging system\u2019s data efficient storage and transfer engine can attain up to 16.6 GB\/s in the range direction and 20.0 GB\/s in the azimuth direction. These findings underscore that the storage exchange engine boasts superior storage access bandwidth and heightened data storage transfer efficiency. This considerable enhancement in the processing performance of the entire \u201cCPU + FPGA\u201d heterogeneous SAR imaging system renders it suitable for application within spaceborne SAR real-time processing systems.<\/jats:p>","DOI":"10.3390\/rs15112885","type":"journal-article","created":{"date-parts":[[2023,6,2]],"date-time":"2023-06-02T01:33:54Z","timestamp":1685669634000},"page":"2885","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["An Efficient On-Chip Data Storage and Exchange Engine for Spaceborne SAR System"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-2528-8970","authenticated-orcid":false,"given":"Hushan","family":"Lv","sequence":"first","affiliation":[{"name":"Beijing Key Laboratory of Embedded Real-Time Information Processing Technology, Beijing Institute of Technology, Beijing 100081, China"}]},{"given":"Yongrui","family":"Li","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Embedded Real-Time Information Processing Technology, Beijing Institute of Technology, Beijing 100081, China"}]},{"given":"Yizhuang","family":"Xie","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Embedded Real-Time Information Processing Technology, Beijing Institute of Technology, Beijing 100081, China"}]},{"given":"Tingting","family":"Qiao","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Embedded Real-Time Information Processing Technology, Beijing Institute of Technology, Beijing 100081, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,6,1]]},"reference":[{"key":"ref_1","first-page":"105","article-title":"High Resolution Radar Real-Time Signal and Information Processing","volume":"16","author":"Long","year":"2019","journal-title":"China Commun."},{"key":"ref_2","unstructured":"John, C., and Curlander, R.N.M. 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