{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T15:42:54Z","timestamp":1775230974113,"version":"3.50.1"},"reference-count":186,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2022,2,14]],"date-time":"2022-02-14T00:00:00Z","timestamp":1644796800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006595","name":"Unitatea Executiva Pentru Finantarea Invatamantului Superior a Cercetarii Dezvoltarii si Inovarii","doi-asserted-by":"publisher","award":["PN-III-P2-2.1-PED-2019-1951"],"award-info":[{"award-number":["PN-III-P2-2.1-PED-2019-1951"]}],"id":[{"id":"10.13039\/501100006595","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>With the decrease in the cost and size of drones in recent years, their number has also increased exponentially. As such, the concerns regarding security aspects that are raised by their presence are also becoming more serious. The necessity of designing and implementing systems that are able to detect and provide defense actions against such threats has become apparent. In this paper, we perform a survey regarding the different drone detection and defense systems that were proposed in the literature, based on different types of methods (i.e., radio frequency (RF), acoustical, optical, radar, etc.), with an emphasis on RF-based systems implemented using software-defined radio (SDR) platforms. We have followed the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines in order to provide a concise and thorough presentation of the current status of the subject. In the final part, we also describe our own solution that was designed and implemented in the framework of the DronEnd research project. The DronEnd system is based on RF methods and uses SDR platforms as the main hardware elements.<\/jats:p>","DOI":"10.3390\/s22041453","type":"journal-article","created":{"date-parts":[[2022,2,14]],"date-time":"2022-02-14T20:58:03Z","timestamp":1644872283000},"page":"1453","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":110,"title":["Drone Detection and Defense Systems: Survey and a Software-Defined Radio-Based Solution"],"prefix":"10.3390","volume":"22","author":[{"given":"Florin-Lucian","family":"Chiper","sequence":"first","affiliation":[{"name":"Telecommunications Department, University Politehnica of Bucharest, 060042 Bucharest, Romania"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5324-7195","authenticated-orcid":false,"given":"Alexandru","family":"Martian","sequence":"additional","affiliation":[{"name":"Telecommunications Department, University Politehnica of Bucharest, 060042 Bucharest, Romania"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4213-6411","authenticated-orcid":false,"given":"Calin","family":"Vladeanu","sequence":"additional","affiliation":[{"name":"Telecommunications Department, University Politehnica of Bucharest, 060042 Bucharest, Romania"}]},{"given":"Ion","family":"Marghescu","sequence":"additional","affiliation":[{"name":"Telecommunications Department, University Politehnica of Bucharest, 060042 Bucharest, Romania"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0060-3306","authenticated-orcid":false,"given":"Razvan","family":"Craciunescu","sequence":"additional","affiliation":[{"name":"Telecommunications Department, University Politehnica of Bucharest, 060042 Bucharest, Romania"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5679-9307","authenticated-orcid":false,"given":"Octavian","family":"Fratu","sequence":"additional","affiliation":[{"name":"Telecommunications Department, University Politehnica of Bucharest, 060042 Bucharest, Romania"}]}],"member":"1968","published-online":{"date-parts":[[2022,2,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"36","DOI":"10.1109\/MCOM.2016.7470933","article-title":"Wireless Communications with Unmanned Aerial Vehicles: Opportunities and Challenges","volume":"54","author":"Zeng","year":"2016","journal-title":"IEEE Commun. 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