In this application scenario, our radar operates in harsh urban environments and can still help cities defend against low-altitude security threats. Despite numerous challenges, its compact size, lightweight design, portability, and simple installation allow it to quickly detect and stably track multiple small multi-rotor drone targets (with a radar cross-section of less than 0.01 square meters), fixed-wing drones, and helicopters in complex electromagnetic environments. Through multiple tests, the radar consistently demonstrated stable and reliable performance, featuring high detection accuracy, strong anti-electromagnetic interference capabilities, stable electro-optical tracking functionality, clear imaging, and no malfunctions during operation.