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I'm wondering if anybody has done thorough empirical testing of the iPhone's ability to find its location. Obviously the performance and accuracy will depend on the type of area one is in (urban vs suburban vs remote).

Just testing from the Simulator, I get a horizontalAccuracy of < 100 meters (98 meters) in a few seconds. I believe it is because it's using WiFi.

But, for user experience purposes, how fast would it be to get this kind of accuracy using EDGE or GPS (assuming both are available)? Does the timing vary in very dense urban areas vs suburban?

It would be great it there were some empirical results published on this so that apps could modify their user experience accordingly.

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iPhone 型号之间的准确性存在差异，无论是使用“真实”GPS、wifi 三角测量还是手机信号塔位置，以及使用 GPS 时天空覆盖和视野中的特定卫星的问题，如以及您等待多长时间。

在实践中，我看到的范围是从我在电梯（法拉第笼）中时的无限（或者可能是地球的直径）到当我从汽车的前部走到后部时告诉我的。

于 2010-09-08T23:53:53.110 回答
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延迟几分钟后，模拟器只会发送一个带有 Apple 总部坐标的事件。

于 2010-09-09T04:47:45.400 回答