Unverified90% confidenceTradeoffTime unknown
野外测绘/地籍作业需选亚米级(RTK/差分)手持机，普通徒步导航米级(2-5米)足够，无需为亚米级多付数倍成本
1
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90%
Confidence
Long-term
Relevance
-
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Unverified预算有限时不建议为号称'军用级定位精度'的宣传买单，民用GPS/北斗芯片定位精度普遍在2.5-5米，导航场景下无差异，只有测绘、精准农业等专业场景才需要亚米级RTK设备77% similarUnverified定位模块优先选择支持GPS+北斗+LBS+WiFi四重定位的书包，室外精度可达5-10米，纯GPS单模块在城市高楼间易漂移到50米以上75% similarUnverifiedGPS+北斗+LBS+WiFi四重定位的胸牌室外精度可达5-10米，纯GPS单模在高楼密集区易漂移到50米以上，儿童/老人防走失场景优先选四模定位75% similarUnverified双频GPS续航在同类产品中属顶级水平，适合超长距离越野骑行或多日探险，但代价是表体较厚重，手腕较细者佩戴舒适度一般75% similarUnverified定位越精准（GPS+LBS+WiFi多重）功耗越高、续航越短，纯活动监测型可续航数月但无实时定位；仅室内养宠不必为高精度GPS续航焦虑买单74% similar
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