Unverified80% confidenceDecision RuleTime unknown
北斗/GPS多频（L1+L5双频）定位在城市高楼、山地环境下轨迹精度显著优于单频，专业跑者/越野爱好者应认准双频定位，普通健身用户单频足够
1
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80%
Confidence
Long-term
Relevance
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