由网友(时光怂恿深爱的人放手)分享简介：是否可以从网络浏览器中以移动设备上可用的最大精度接收 GPS 位置?Is it possible to receive GPS position with the maximal precision available on a mobile device from within the web browser?我...

是否可以从网络浏览器中以移动设备上可用的最大精度接收 GPS 位置?

Is it possible to receive GPS position with the maximal precision available on a mobile device from within the web browser?

我使用 HTML5 Geolocation 中的 getCurrentPosition() 和 watchPosition() 在移动设备上进行了测试，并在办公楼周围走动.我在 Android HTC Desire(Android 浏览器)和 iPhone 3(Safari)上收到了 70m 的最大精度，没有高度/速度数据，打开了 WiFi.WiFi关闭后，精度下降到800-1000米.

I've made tests on mobile devices using both getCurrentPosition() and watchPosition() from HTML5 Geolocation, walking around an office building. I've received on Android HTC Desire (Android Browser) and iPhone 3 (Safari) maximal precision of 70m, and no altitude/speed data, with WiFi turned on. After the WiFi was turned off, accuracy fell to 800-1000 meters.

同时，在 Android 上的 GPS 测试应用中，我收到了 14m 的 GPS 定位精度，以及高度和速度数据.

In the same time, on GPS Test app on Android, I've received GPS position accuracy of 14m, and additionally altitude and speed data.

因此，正如我所见，我在移动浏览器中的两种设备中都没有收到 GPS 上可用的完整数据集，也没有收到设备传感器可能达到的精度.

So, as I see, I've not received in both devices in mobile browser either the full data set available on GPS, nor the precision possible for device sensors to reach.

那么，我的问题是，浏览器接收到的GPS数据集是受限于设备，还是浏览器本身不能充分利用?我想在我的网络应用程序中获得完整的 GPS 精度，而无需编写普通"移动应用程序.

So, my question is, is the GPS data set that browsers receive is limited by devices, or can the browser itself not make full use of it? I would like to have full GPS precision in my web application without need to write a 'normal' mobile app.

推荐答案

好的，我的同事给了我很有价值的提示.

OK, my work-collegue gave me very valuable hint.

出于安全原因，Android 的内置浏览器(因此，Android 浏览器，我已在其上进行了测试)无法获得完全精确的 GPS 位置.精确度随着预谋而降低.因此，当 WiFi 关闭时，我得到的响应是精度为 800-1000 米.开启 WiFi 后，我收到的回调准确度约为 70 米.

For security reasons, built-in browser for Android (so, Android browser, on which I've made tests) doesn't get GPS location with full precision. Precision is with premeditation lowered. So that, when WiFi was switched off, I've got response that accurance is 800-1000 meters. With WiFi turned on, the accurance I've received on callback was abount 70 meters.

所以，我使用 Opera Mobile 和 Firefox 进行了测试，它们需要获得许可才能在安装时从 GPS 获取准确位置(与 GPS 测试相同).这些浏览器，在关闭 GPS 后，接收到的数据具有准确性