\u201cOur acoustic drone detection enables us to identify unmanned aerial objects that are in the airspace without authorisation,\u201d explains Martin Blass. Microphone arrays capture sound from various directions, and runtime differences between sensor signals pinpoint the sound\u2019s origin. \u201cIt\u2019s like listening intently in a specific direction while at the same time filtering out background noise,\u201d Blass adds.<\/p>\n
Mithilfe von Machine Learning wird das System kontinuierlich verbessert. Das Modell wird mit akustischen Daten von Drohnenfl\u00fcgen trainiert, um typische Ger\u00e4uschmuster zuverl\u00e4ssig zu erkennen. \u201eJe mehr Daten wir sammeln, desto pr\u00e4ziser wird unsere Technologie\u201c, so Blass weiter. Ein j\u00fcngster Durchbruch ist die Entwicklung eines 3D-Mikrofonarrays in Halbkugelform, das Drohnen pr\u00e4ziser in der H\u00f6he lokalisiert als herk\u00f6mmliche 2D-Arrays. Dies erm\u00f6glicht eine pr\u00e4zisere Verfolgung von Drohnen in komplexen Umgebungen und verbessert die Identifikation von Flugobjekten erheblich. Im Vergleich zu herk\u00f6mmlichen 2D-Arrays kann es H\u00f6henwinkel besser erfassen und sogar mobil an Fahrzeugen genutzt werden. Die Einsatzm\u00f6glichkeiten sind vielf\u00e4ltig: Gro\u00dfveranstaltungen, politische Versammlungen oder Flugh\u00e4fen k\u00f6nnen mit dieser Technologie vor unbefugten Drohnen gesch\u00fctzt werden.<\/p>\n
It is particularly important to safeguard critical infrastructure, as drones weighing over 500 grams (that require a permit to fly in Austria) can cause significant damage. And in military applications, the system can be used to complement existing sensor networks for detecting aerial objects. Contrary to radar systems, which actively emit waves that make them detectable, acoustic detection operates passively \u2013 a major advantage in security-critical scenarios. A look at the future reveals a number of highly promising developments: planned research projects focus on distributed acoustic sensor nodes to extend detection range. Compact MEMS-based microphone arrays will operate directly where they are needed \u2013 \u201con the edge\u201d \u2013 with minimal energy consumption, made increasingly efficient through advances in deep learning.<\/p>\n
By Elke Zenz<\/strong><\/p>\n <\/p>\n The project is funded and financed as part of the FORTE programme and the KIRAS\/K-PASS security research funding programme by the Federal Ministry of Finance and administered by the Austrian Research Promotion Agency.<\/span><\/span><\/p>","protected":false},"excerpt":{"rendered":" \u201eUnsere akustische Drohnendetektion erm\u00f6glicht es, unbemannte Flugobjekte zu erkennen, die sich unerlaubt im Luftraum bewegen\u201c, erkl\u00e4rt Martin Blass. Dabei kommen Mikrofonarrays zum Einsatz, die Schall aus verschiedenen Richtungen aufnehmen. Durch Laufzeitunterschiede zwischen den Sensorsignalen kann die Richtung eines Ger\u00e4uschs bestimmt werden. \u201eEs ist, als ob man gezielt in eine bestimmte Richtung lauscht und st\u00f6rende Hintergrundger\u00e4usche […]<\/p>\n","protected":false},"author":39,"featured_media":83497,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[4552,4266,4553,4549,4551,4550,4555,4554],"class_list":["post-83492","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-allgemein","tag-3d-akustik","tag-akustik","tag-barakuda","tag-drohnendetektion","tag-lidar","tag-mikrofonarray","tag-mmcuas","tag-uskit","institutes-digital","business_areas-sicherheit-und-verteidigung"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.joanneum.at\/en\/wp-json\/wp\/v2\/posts\/83492","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.joanneum.at\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.joanneum.at\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.joanneum.at\/en\/wp-json\/wp\/v2\/users\/39"}],"replies":[{"embeddable":true,"href":"https:\/\/www.joanneum.at\/en\/wp-json\/wp\/v2\/comments?post=83492"}],"version-history":[{"count":7,"href":"https:\/\/www.joanneum.at\/en\/wp-json\/wp\/v2\/posts\/83492\/revisions"}],"predecessor-version":[{"id":84476,"href":"https:\/\/www.joanneum.at\/en\/wp-json\/wp\/v2\/posts\/83492\/revisions\/84476"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.joanneum.at\/en\/wp-json\/wp\/v2\/media\/83497"}],"wp:attachment":[{"href":"https:\/\/www.joanneum.at\/en\/wp-json\/wp\/v2\/media?parent=83492"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.joanneum.at\/en\/wp-json\/wp\/v2\/categories?post=83492"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.joanneum.at\/en\/wp-json\/wp\/v2\/tags?post=83492"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}More<\/h3>\n
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