问问用GPS的

[mimosa]

GPS定位时最好处于静止状态. 汽车如果是行驶状态回慢很多. 我用的GARMIN <30秒. 多云天及阴雨天会慢一点.

哈哈， 我用mio 不动就没信号<1m分钟， 不过一动就好<5秒

 

[Timothy's]

There are two problems nobody has mentioned.
1) Some car has a layer of thin metal film on the glass for UV protection. It would block radio wave. You have to install an out of car antenna for GPS.
2) There are two generation of GPS receiver. The first generation is less sensitive. It would lose signal more easily. Until last year there were still many models of GPS on sale using the first generation receiver.


Only Garmin and Tomtom One are worth buying. There are too many models are just a device runing windows mobile with GPS software.

 

[zhituan]

问题 解决了
必须是满电的情况下 才有信号

谢谢各位。。。。。。。。。。。。。。。。。

 

[york_chen817]

There are two problems nobody has mentioned.
1) Some car has a layer of thin metal film on the glass for UV protection. It would block radio wave. You have to install an out of car antenna for GPS.
2) There are two generation of GPS receiver. The first generation is less sensitive. It would lose signal more easily. Until last year there were still many models of GPS on sale using the first generation receiver.


Only Garmin and Tomtom One are worth buying. There are too many models are just a device runing windows mobile with GPS software.