我试图在不同的间隔范围内尽可能精确地获得 gps 位置,我几乎没有外部 gps、10hz、5hz 和 1hz
LocationManager locationManager = (LocationManager)
car.this.getSystemService(car.this.LOCATION_SERVICE);
LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
// Called when a new location is found
}
public void onStatusChanged(String provider, int status, Bundle extras) {}
public void onProviderEnabled(String provider) {}
public void onProviderDisabled(String provider) {}
};
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0,
locationListener);
通过这种方式,我在匀速行驶时得到这样的日志更新
10hz GPS
81ms new position
79ms new position
88ms new position
96ms new position
196ms new positon
60ms new positon
256ms new position
70ms new position
5 hz GPS
187ms new...
189ms ..
275ms ..
140ms ..
180ms ..
220ms ..
所以我认为 onStatusChanged 最初比标称频率快,但随后饱和并导致大跳跃
如果我使用计时器,效果很好,我每 100 毫秒(200 或 1000)获得一次位置,但计时器每 10 秒关闭 100 毫秒
编辑:为澄清起见,我想在每个精确(或接近)100ms、200ms 或 1000ms 时获得一个位置
* *更新 12-04-13
在重做我的代码以使用 location.getTime() 之后,这是结果,所有测试都是在外部以中/高速进行的,并且每个设备在 10 分钟内进行记录
HTC Sensation Z710e 4.0.3 Internal GPS 1HZ
Average Accuracy: 12.1m
Average intertval: 1186ms
Min: 98ms
Max: 2621ms
HTC Desire HD 4.0.4 Internal GPS 1HZ
Average Accuracy: 10.6m
Average intertval: 1211ms
Min: 144ms
Max: 2588ms
ASUS Transformer TF101 4.0.4 Internal GPS 1HZ
Average Accuracy: 18.15m
Average intertval: 1000MS
Min: 1000ms
Max: 1000ms
SAMSUNG NOTE II GT-N7100 4.1.2 Internal GPS 1HZ (Glonass)
Average Accuracy: 6.8m
Average intertval: 1000MS
Min: 1000ms
Max: 1001ms
SAMSUNG, HTC OR ASUS with external GPS 5HZ
Average Accuracy: 2.2m
Average intertval: 200MS
Min: 200ms
Max: 200ms
SAMSUNG, HTC OR ASUS with external GPS 10HZ (Glonass)
Average Accuracy: 1.6m
Average intertval: 100MS
Min: 100ms
Max: 100ms