https://www.counteruavradar.com/tags/sensor-basics/ Recent content in Sensor Basics on Counter UAV Radar — Low-Altitude Surveillance Radar Hugo en-us Fri, 27 Mar 2026 20:15:00 +0800 https://www.counteruavradar.com/knowledge-base/what-is-electro-optical-surveillance/ Fri, 23 May 2025 00:00:00 +0000 https://www.counteruavradar.com/knowledge-base/what-is-electro-optical-surveillance/ <p>What is electro-optical surveillance? Electro-optical surveillance means using cameras and optics to observe a scene by turning incoming light into electronic images or video.</p> <p>The phrase sounds complicated, but the basic idea is familiar. A daylight security camera is an electro-optical system. A thermal imager is also an electro-optical system. So is a pan-tilt-zoom payload that combines a visible camera, an infrared channel, and other aids in one sensor head.</p> https://www.counteruavradar.com/knowledge-base/what-is-passive-detection/ Wed, 24 Dec 2025 00:00:00 +0000 https://www.counteruavradar.com/knowledge-base/what-is-passive-detection/ <p>What is passive detection? Passive detection means detecting or observing something <strong>without transmitting your own dedicated search energy</strong> toward the target.</p> <p>That is the core idea. An active radar sends out energy and waits for the echo. A passive system usually listens, watches, or exploits energy that is already present in the environment.</p> <p>This makes passive detection attractive in situations where discretion, low signature, or efficient use of existing signals matters. But passive does not mean effortless. It simply means the system depends on a different source of information.</p>