{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T14:49:06Z","timestamp":1786978146781,"version":"build-2736575974"},"reference-count":23,"publisher":"Optica Publishing Group","issue":"17","license":[{"start":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T00:00:00Z","timestamp":1786924800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T00:00:00Z","timestamp":1786924800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["62471478"],"award-info":[{"award-number":["62471478"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"},{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Fundamental and Interdisciplinary Disciplines Break-through Plan of the Ministry of Education of China","award":["JYB2025XDXM110"],"award-info":[{"award-number":["JYB2025XDXM110"]}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Lett."],"published-print":{"date-parts":[[2026,9,1]]},"abstract":"<jats:p>We propose a tunable photonic compressive sensing (PCS) scheme based on chirp mixing, in which a linear frequency-modulated (LFM) signal is adopted to replace the pseudo-random binary sequence (PRBS), enabling tunable band-selective reconstruction\u2014a capability absent in the PRBS-based PCS approach. The proposed system supports both ultra-wideband scanning across the entire Nyquist frequency range and narrow-bandwidth operation for improved reconstruction quality. Photonic-assisted frequency doubling is utilized to lower the bandwidth requirement of the LFM signal during chirp mixing. Furthermore, an integrated array structure, a frequency-selective joint frequency and angle-of-arrival (AOA) measurement PCS system is developed. Experimental results demonstrate frequency-selective recovery of microwave signals over a 5\u2009GHz bandwidth at a compression ratio of 20, as well as effective joint frequency and AOA measurement within predefined detection bands. This work introduces a new, to the best of our knowledge, application-oriented and spectrum-focused dimension to PCS.<\/jats:p>","DOI":"10.1364\/ol.608650","type":"journal-article","created":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T17:00:08Z","timestamp":1785776408000},"page":"4765","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Tunable photonic compressive sensing of microwave signals based on chirp mixing"],"prefix":"10.1364","volume":"51","author":[{"given":"Shiru","family":"Song","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05d2yfz11","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yalin","family":"Yao","sequence":"additional","affiliation":[{"name":"National University of Defense Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"He","family":"Cui","sequence":"additional","affiliation":[{"name":"National University of Defense Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xianglin","family":"Chen","sequence":"additional","affiliation":[{"name":"National University of Defense Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yin","family":"Li","sequence":"additional","affiliation":[{"name":"Academy of Military Sciences"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taolin","family":"Liu","sequence":"additional","affiliation":[{"name":"National University of Defense Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3343-5548","authenticated-orcid":true,"given":"Tian","family":"Jiang","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05d2yfz11","id-type":"ROR","asserted-by":"publisher"}]},{"name":"National University of Defense Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,8,17]]},"reference":[{"key":"ol-51-17-4765-R1","doi-asserted-by":"publisher","first-page":"e01394","DOI":"10.1002\/lpor.202501394","type":"journal-article","volume":"19","author":"Fan","year":"2025","journal-title":"Laser Photon. 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All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}