the location point drifts

Some users of our App have a large range of drift in the case of high accuracy of positioning points during the static process, how to solve it.

The CLLocationManager configuration is as follows.The desiredAccuracy is 3000.The distanceFilter is 1500.The location point horizontalAccuracy is less than 100,but the longitude and latitude of the positioning point are hundreds of kilometers different from the actual one.

the location point drifts
 
 
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