由 Sergeantpepper @ Thu Jan 07, 2021 2:24 pm 写道: What is the ACR ResQLink?
The ACR ResQLink is what’s called a “personal locator beacon.” When you activate it (by pressing a button), it broadcasts your exact GPS position via a worldwide distress signal, alerts search and rescue, and then they save you. It’s accurate to 0.06 meters within 15 minutes. It’s pretty impressive.
Who are they ?
这个 PLB 系统的三个专业的通信卫星，是美国， 加拿大， 法国和前苏联共同搞的。
这个介绍有帮助：
https://www.adventure-journal.com/2017/01/5-things-know-personal-locator-beacons/
