Unverified50% confidenceFactExact time
Traditional airport surveillance radars (such as primary surveillance radar ASR) were originally designed to track large aircraft, and their signal processing algorithms actively filter out targets with extremely small RCS values to exclude clutter.
1
Sources
50%
Confidence
Long-term
Relevance
8/9/2026
First Seen
Sources
无人机携爆炸装置闯入德国机场：低空安全威胁升级
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