{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T17:04:03Z","timestamp":1786122243459,"version":"build-2736575974"},"reference-count":28,"publisher":"Wiley","issue":"44","license":[{"start":{"date-parts":[[2026,5,12]],"date-time":"2026-05-12T00:00:00Z","timestamp":1778544000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,5,12]],"date-time":"2026-05-12T00:00:00Z","timestamp":1778544000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["2021YFA1401002"],"award-info":[{"award-number":["2021YFA1401002"]}],"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":["2023YFB3811502"],"award-info":[{"award-number":["2023YFB3811502"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["62288101"],"award-info":[{"award-number":["62288101"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["advanced.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Advanced Science"],"published-print":{"date-parts":[[2026,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Passive radars (PRs) provide a low\u2010cost and energy\u2010efficient approach to object detection by reusing existing wireless transmissions instead of emitting dedicated probing signals. Yet, conventional passive systems require prior knowledge of non\u2010cooperative source waveforms, are vulnerable to strong interference, and rely on Doppler signatures, limiting their ability to detect subtle or slow\u2010moving targets. Here, we introduce a metasurface\u2010enabled PR (MEPR) concept that integrates a space\u2010time\u2010coding programmable metasurface to imprint distinct spatiotemporal tags onto ambient wireless wavefields. This mechanism transforms a PR into an\n                    <jats:italic>active\u2010like<\/jats:italic>\n                    sensing platform without the need for source control, enabling interference suppression, signal enhancement, and accurate target localization and tracking in cluttered environments. A proof\u2010of\u2010concept implementation operating at 5.48\u00a0GHz confirms real\u2010time imaging and tracking of unmanned aerial vehicles under interference\u2010rich conditions, with performance comparable to active radar systems. These results establish MEPR as a solid foundation for scalable, adaptive, and energy\u2010efficient next\u2010generation integrated sensing and communication systems.\n                  <\/jats:p>","DOI":"10.1002\/advs.75629","type":"journal-article","created":{"date-parts":[[2026,5,12]],"date-time":"2026-05-12T08:49:37Z","timestamp":1778575777000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Metasurface\u2010Enabled Active\u2010Like Passive Radar"],"prefix":"10.1002","volume":"13","author":[{"given":"Mingyi","family":"Li","sequence":"first","affiliation":[{"name":"State Key Laboratory of Photonics and Communications Peking University  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiawen","family":"Xu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Photonics and Communications Peking University  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hanting","family":"Zhao","sequence":"additional","affiliation":[{"name":"China Mobile Research Institute (CMRI)  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xu","family":"Zhao","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Photonics and Communications Peking University  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanjin","family":"Chen","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Photonics and Communications Peking University  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5862-1497","authenticated-orcid":false,"given":"Tie Jun","family":"Cui","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Millimeter Waves Southeast University  Nanjing China"},{"name":"Suzhou Laboratory  Suzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vincenzo","family":"Galdi","sequence":"additional","affiliation":[{"name":"Fields &amp; Waves Lab Department of Engineering University of Sannio  Benevento Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lianlin","family":"Li","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Photonics and Communications Peking University  Beijing China"},{"name":"Pazhou Laboratory (Huangpu)  Guangzhou Guangdong China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,5,12]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/356327a0"},{"key":"e_1_2_10_3_1","volume-title":"Passive Imaging with Ambient Noise","author":"Gamier J.","year":"2016"},{"key":"e_1_2_10_4_1","volume-title":"An Introduction to Passive Radar","author":"Griffiths H. 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