无线电失效后,一个学生用麦克风为平民接上了防线
原创
光纤缆线把无线电探测的命脉一刀切断,平民拿什么防?一个在约克大学读书的以色列学生用整个暑假给出了答案。VolAnti不靠无线电,只靠4个MEMS麦克风捕捉螺旋桨切割空气的声波,用算法在频谱上识别出梳状特征后报警,再通过LoRa把信号广播给附近所有设备。测试场景:有路人、有微风的街道,真规格无人机,104.2米外成功检出。开源、便宜、只做预警不干扰——这比很多动辄数万美元的商业方案更接近平民真正需要的东西。
原文:Show HN: VolAnti – Open-source acoustic detector for fibre-optic FPV drones · 来源:Hacker News
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