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GPS數據格式轉換[通俗易懂]
2022-07-05 12:13:00 【全棧程序員站長】
大家好,又見面了,我是你們的朋友全棧君。
經緯度格式分為三種:度、 度–分、 度–分–秒
1.)ddd.ddddd °【度.度 格式】的十進制小數部分(5比特)
2.)ddd°mm.mmm’ 【度分.分 格式】的十進制小數部分(3比特) NMEA數據格式為$GPGGA時,得到gps數據為(度分.分)格式
3.) ddd°mm’ss’’ 【度.分.秒 格式】
Google 使用的是第三種格式 度。分’秒’’
度分轉換:
將度分單比特數據轉換為度單比特數據
度=度+分/60
例如: 經度 = 116°20.12’ 緯度 = 39°12.34’
經度 = 116 + 20.12 / 60 = 116.33533°
緯度 = 39 + 12.34 / 60 = 39.20567°
度分秒轉換:
將度分秒單比特數據轉換為度單比特數據
度=度+分/60 +秒/60/60
例如: 經度 = 116°20’43” 緯度 = 39°12’37”
經度 = 116 + 20 / 60 + 43/60/60 = 116.34528°
緯度 = 39 + 12 / 60 + 37/60/60 = 39.21028°
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