Unverified90% confidenceDecision RuleTime unknown
卫星通信设备核心分两类：接入铱星（Iridium）系统的设备（如inReach、Zoleo）拥有全球极地覆盖且支持真正双向短信；接入Globalstar系统的设备（如SPOT）仅覆盖中低纬度，高纬度和极地有盲区。计划去高纬度/南北极选铱星
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Confidence
Long-term
Relevance
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