Unverified83% confidenceFactTime unknown
内置GPS的EPIRB其GNSS定位会同时嵌入406MHz报文和121.5MHz归航信号，即使卫星未过顶也能立即传出精确坐标，比无GPS型号平均节省搜救定位时间数小时
1
Sources
83%
Confidence
Long-term
Relevance
-
First Seen
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Unverified内置GPS可在激活后数分钟内将精确坐标上传至卫星系统，相比无GPS的老式EPIRB大幅缩短搜救定位时间84% similarUnverified内置GPS/GNSS定位结合406MHz+121.5MHz+AIS三频发射，搜救定位精度和被发现概率高于仅有406MHz的老款EPIRB84% similarUnverified内置GPS并通过406MHz上传坐标，配合121.5MHz归航信号，定位精度优于无GPS的老款PLB82% similarUnverified内置GPS（GNSS）定位的EPIRB可将搜救定位精度从卫星多普勒的约2-5公里缩小至100米内，显著缩短救援时间，远洋应选内置GPS机型81% similarUnverified选择内置GPS/GNSS的EPIRB，定位精度可达约100米以内；仅依靠406MHz多普勒定位的机型误差达2-5公里，救援耗时显著增加81% similar
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