最近弄GPS发现锁定卫星后无法定位慢速度移动物

yuxinxb13 · 发表于 2012-7-24 10:51:25

实验：1、等设备锁定卫星后人（我）拿着设备行走（平常的行走），发现定位的数据一直不变
      2、等设备锁定卫星后人（我）拿着设备骑自行车（踩快点的），发现定位的数据变化正常
      3、等设备锁定卫星后人（我）拿着设备快步走（小跑式行走），发现定位的数据变化正常
      4、等设备锁定卫星后人（我）拿着设备缓慢骑车（与平常行走相当），发现定位的数据一直不变

总结：GPS锁定卫星后无法定位慢速度移动

当如何处理这个问题：听说GPS有行走模式和车载模式设置？？？找了好久没发现这方面的资料,有经验的指点下~

fsclub · 发表于 2012-7-24 11:07:28

不可能不变，你拿着不动都会变，因为它自己都会飘移的。
我不知道你拿的是什么GPS设备？如果是成品设备，那是100%做了数据滤波的，为了抵抗飘移，而有意忽略了微小变化。

如灵图天行者地图中有步行模式和导航模式，步行模式应该是没有滤波，而导航模式是做了滤波，并自动把你定位在道路上而不是在房子里，因为它假设你是开车。

yuxinxb13 · 发表于 2012-7-24 11:26:08

用的是JRC CRT G595模块外围电路自己做的

fsclub · 发表于 2012-7-24 11:48:47

把NMEA数据传上来看看？

yuxinxb13 · 发表于 2012-7-24 12:01:47

$GPGGA,072144.000,2516.1093,N,11019.9518,E,0,04,,,M,,M,,*45
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPGSV,3,1,11,21,64,228,41,09,63,055,16,18,60,355,,42,45,126,*72
$GPGSV,3,2,11,27,37,042,,15,30,045,,22,26,316,,14,22,265,18*74
$GPGSV,3,3,11,12,18,130,21,25,10,164,39,29,02,189,*44
$GPRMC,072144.000,V,2516.1093,N,11019.9518,E,2.53,24.31,150212,,,N*41
$GPVTG,24.31,T,,M,2.53,N,4.69,K,N*09
$GPGGA,072145.000,2516.1183,N,11019.9582,E,0,04,,,M,,M,,*47
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPGSV,3,1,11,21,64,228,41,09,63,055,16,18,60,355,,42,45,126,*72
$GPGSV,3,2,11,27,37,042,,15,30,045,,22,26,316,,14,22,265,18*74
$GPGSV,3,3,11,12,18,130,21,25,10,164,38,29,02,189,*45
$GPRMC,072145.000,V,2516.1183,N,11019.9582,E,2.45,22.96,150212,,,N*4F
$GPVTG,22.96,T,,M,2.45,N,4.54,K,N*0B
$GPGGA,072146.000,2516.1192,N,11019.9587,E,0,04,,,M,,M,,*41
$GPGSA,A,1,,,,,,,,,,,,,,,*1E
$GPGSV,3,1,11,21,64,228,41,09,63,055,16,18,60,355,,42,45,126,*72

这些数据？

fsclub · 发表于 2012-7-24 12:05:45

本帖最后由 fsclub 于 2012-7-24 12:08 编辑

$GPRMC,072144.000,V,2516.1093,N,11019.9518,E,2.53,24.31,150212,,,N*41
$GPRMC,072145.000,V,2516.1183,N,11019.9582,E,2.45,22.96,150212,,,N*4F
------------
怎么能说没有变化？
里面那个V表示你根本没定位成功（A表示定位成功）。所以什么变与不变没有意义。

yuxinxb13 · 发表于 2012-7-24 12:45:43

$GPRMC,071802.000,A,2516.1442,N,11019.9537,E,0.00,143.03,150212,,,A*61
$GPVTG,143.03,T,,M,0.00,N,0.00,K,A*38
$GPGGA,071803.000,2516.1442,N,11019.9537,E,1,08,0.97,163.2,M,-20.1,M,,*4C
$GPGSA,M,3,25,27,21,12,14,22,09,18,,,,,1.28,0.97,0.83*07
$GPGSV,3,1,12,21,65,232,45,09,64,058,14,18,59,353,14,27,39,043,17*72
$GPGSV,3,2,12,15,31,044,,22,25,315,16,14,21,263,15,12,17,131,18*70
$GPGSV,3,3,12,25,09,165,34,29,02,190,,06,01,282,,36,,,*4A
$GPRMC,071803.000,A,2516.1442,N,11019.9537,E,0.00,143.03,150212,,,A*60
$GPVTG,143.03,T,,M,0.00,N,0.00,K,A*38
$GPGGA,071804.000,2516.1442,N,11019.9537,E,1,08,0.97,163.2,M,-20.1,M,,*4B
$GPGSA,M,3,25,27,21,12,14,22,09,18,,,,,1.28,0.97,0.83*07
$GPGSV,3,1,12,21,65,232,45,09,64,058,12,18,59,353,14,27,39,043,17*74
$GPGSV,3,2,12,15,31,044,,22,25,315,16,14,21,263,14,12,17,131,18*71
$GPGSV,3,3,12,25,09,165,34,29,02,190,,06,01,282,,36,,,*4A
$GPRMC,071804.000,A,2516.1442,N,11019.9537,E,0.00,143.03,150212,,,A*67
$GPVTG,143.03,T,,M,0.00,N,0.00,K,A*38
$GPGGA,071805.000,2516.1442,N,11019.9537,E,1,07,0.99,163.2,M,-20.1,M,,*4B
$GPGSA,M,3,25,27,21,12,14,22,09,,,,,,1.30,0.99,0.84*0E
$GPGSV,3,1,12,21,65,232,45,09,64,058,13,18,59,353,,27,39,043,17*70
$GPGSV,3,2,12,15,31,044,,22,25,315,16,14,21,263,14,12,17,131,18*71
$GPGSV,3,3,12,25,09,165,33,29,02,190,,06,01,281,,36,,,*4E
$GPRMC,071805.000,A,2516.1442,N,11019.9537,E,0.00,143.03,150212,,,A*66
$GPVTG,143.03,T,,M,0.00,N,0.00,K,A*38
$GPGGA,071806.000,2516.1442,N,11019.9537,E,1,07,0.99,163.2,M,-20.1,M,,*48
$GPGSA,M,3,25,27,21,12,14,22,09,,,,,,1.30,0.99,0.84*0E
$GPGSV,3,1,12,21,65,232,45,09,64,058,16,18,59,353,,27,39,043,17*75
$GPGSV,3,2,12,15,31,044,,22,25,315,16,14,21,263,14,12,17,131,18*71
$GPGSV,3,3,12,25,09,165,32,29,02,190,,06,01,281,,38,,,*41
$GPRMC,071806.000,A,2516.1442,N,11019.9537,E,0.00,143.03,150212,,,A*65

Appcat · 发表于 2012-7-24 16:15:26

找厂家要行走模式的固件，你的固件显然是车载模式。

yuxinxb13 · 发表于 2012-7-24 16:47:42

NEO 6M Ublox准备换这种可以自己设定用哪种模式吗？

yuxinxb13 · 发表于 2012-7-24 16:53:53

有用过的吗，看着英文资料头痛啊

explorer117 · 发表于 2012-7-24 17:43:34

LS正解，顶

surf_131 · 发表于 2012-7-24 18:23:40

7楼数据，在3秒钟内行走了多少米？这个定位数据有效，但是测试时间太短了吧？

定位数据末位大体相当于1厘米，难道能期待民用终端随便获得这样的精度？呵呵。

yuxinxb13 · 发表于 2012-7-31 17:20:45

先谢谢楼上的了，现在换用了NEO 6M的有步行模式

最近弄GPS发现锁定卫星后无法定位慢速度移动物

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