<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Counter-UAS | Δρ. Ευάγγελος Βλάχος</title><link>https://vlachos.science/el/tags/counter-uas/</link><atom:link href="https://vlachos.science/el/tags/counter-uas/index.xml" rel="self" type="application/rss+xml"/><description>Counter-UAS</description><generator>Hugo Blox Builder (https://hugoblox.com)</generator><language>el</language><lastBuildDate>Wed, 17 Jun 2026 00:00:00 +0000</lastBuildDate><image><url>https://vlachos.science/media/icon_hu_2beab1606e98fa9.png</url><title>Counter-UAS</title><link>https://vlachos.science/el/tags/counter-uas/</link></image><item><title>Hardware-Aware SE(3) Control Barrier Functions for Counter-UAS Interceptors with Directed Energy Payloads</title><link>https://vlachos.science/el/publication/vlachos-cbf-se3-2026/</link><pubDate>Wed, 17 Jun 2026 00:00:00 +0000</pubDate><guid>https://vlachos.science/el/publication/vlachos-cbf-se3-2026/</guid><description>&lt;h2 id="simulation-demo">Simulation Demo&lt;/h2>
&lt;p>The animation below compares two methods on the SE(3) CBF scenario: the &lt;strong>unfiltered&lt;/strong> controller (red) and the proposed &lt;strong>ADMM-CBF&lt;/strong> safety filter (blue), which maintains FoV pointing throughout the pursuit maneuver.&lt;/p>
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&lt;source src="https://vlachos.science/publication/vlachos-cbf-se3-2026/demo.mp4" type="video/mp4">
&lt;/video>
&lt;h2 id="key-contributions">Key Contributions&lt;/h2>
&lt;ul>
&lt;li>A &lt;strong>hardware-aware CBF safety filter&lt;/strong> on the SE(3) manifold that provides formal FoV pointing guarantees for directed-energy payloads under aggressive pursuit dynamics.&lt;/li>
&lt;li>Formulation of phased-array electronic steering limits as a &lt;strong>relative-degree-two safety constraint&lt;/strong> with analytically verified Lie derivatives.&lt;/li>
&lt;li>An &lt;strong>ADMM solver&lt;/strong> with constant-time core factorization enabling real-time onboard execution.&lt;/li>
&lt;li>Validation in both a nonlinear SE(3) simulation and a &lt;strong>PX4 SITL&lt;/strong> environment, demonstrating elimination of all FoV violations and recovery of antenna gain through beam tightening.&lt;/li>
&lt;/ul></description></item></channel></rss>