A Spaceborne Distributed Synthetic Aperture Multi-Scale Collaborative Imaging Method for Rapid Wide-area Electromagnetic Situation Construction

A Spaceborne Distributed Synthetic Aperture Multi-Scale Collaborative Imaging Method for Rapid Wide-area Electromagnetic Situation Construction | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article A Spaceborne Distributed Synthetic Aperture Multi-Scale Collaborative Imaging Method for Rapid Wide-area Electromagnetic Situation Construction Shunhu Hou, Youchen Fan, Shengliang Fang, Yangyang Wang, Wei Chen This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9061571/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Existing spaceborne electromagnetic spectrum sensing and imaging methods suffer from limitations such as low efficiency in acquiring and characterizing the overall situational information of emitterclusters, difficulty in balancing field of view with resolution, and insufficient real - time rapid imaging capabilities. To address these issues, this paper applies synthetic aperture passive interferometric imaging technology to ground - based high - power emitter electromagnetic spectrum sensing. A system model of “Emitter - Space Transmission - Spaceborne Distributed Synthetic Aperture Collaborative Imaging” is constructed. An interleaved Y - shaped synthetic aperture joint configuration based on a distributed six - satellite formation is proposed, in which the central satellite is equipped with a 36 - element Y - shaped sub - aperture. Simulation results demonstrate that the proposed joint configuration enables the simultaneous fast direct generation of wide - area situational maps and key - area high - resolution situational maps, achieving collaborative sensing with both wide coverage and high precision. Furthermore, this paper conducts research on graph-based emitter localization. To address the issue of point-source pixel overlap in brightness temperature situation maps, this article proposes a centroid-weighted method for multi-peak separation (CWM-MPS). The results indicate that the proposed joint configuration and imaging-localization methodology can significantly improve emitter detection probability and localization accuracy. Beyond localization tasks, the electromagnetic situation maps constructed in this study also possess multiple functions, including regional energy characterization, anomaly detection, and situation assessment, providing viable pathways for the future development and application of electromagnetic spectrum sensing technology. Full Text Additional Declarations The authors declare no competing interests. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-9061571","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":602482457,"identity":"67cbc4bf-0efa-4a69-b98e-41cd7b04e482","order_by":0,"name":"Shunhu Hou","email":"","orcid":"","institution":"Space Engineering University","correspondingAuthor":false,"prefix":"","firstName":"Shunhu","middleName":"","lastName":"Hou","suffix":""},{"id":602482458,"identity":"9da1705e-3227-4474-bec1-b54aca3b6ca2","order_by":1,"name":"Youchen Fan","email":"","orcid":"","institution":"Space Engineering 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Simulation results demonstrate that the proposed joint configuration enables the simultaneous fast direct generation of wide\u003c/strong\u003e-\u003cstrong\u003earea situational maps and key\u003c/strong\u003e-\u003cstrong\u003earea high\u003c/strong\u003e-\u003cstrong\u003eresolution situational maps, achieving collaborative sensing with both wide coverage and high precision. Furthermore, this paper conducts research on graph-based emitter localization. To address the issue of point-source pixel overlap in brightness temperature situation maps, this article proposes a centroid-weighted method for multi-peak separation (CWM-MPS). The results indicate that the proposed joint configuration and imaging-localization methodology can significantly improve emitter detection probability and localization accuracy. 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