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原始链接: https://news.ycombinator.com/item?id=43465189

Hacker News 上正在讨论 Planet.com 的“行星级飞机探测”技术。一个关键问题是这项技术与现有的 ADS-B 系统在成本和适用性方面的比较。文章提到由于中等分辨率图像的可探测性限制,这项技术专注于探测大于 25 米的飞机,这引发了关于建造更小飞机的评论。这又导致了关于美国持续发展远程隐形轰炸机(例如 B21)的讨论。


原文
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Aircraft Detection at Planetary Scale (planet.com)
7 points by jjwiseman 51 minutes ago | hide | past | favorite | 5 comments










TFA doesn't really explain how is this better/cheaper than existing ADSB based technologies, or where one is more appropriate than the other (ie which use cases it's targeting)?


> After significant experimentation with many different model architectures, we determined that aircraft <25m in length or wingspan are too small to be reliably detected in medium resolution imagery, so we elected to focus on aircraft this size or greater.

Build small aircraft.



If you were wondering why the US stopped bothering with long range stealth bombers


When, precisely, did the US stop doing that?


Like B21?






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