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android Manifest Manifest.permission Manifest.permission_group android.accessibilityservice AccessibilityService android.accounts Account android.app NotificationManager android.bluetooth BluetoothAdapter BluetoothClass BluetoothClass.Device BluetoothClass.Device.Major BluetoothClass.Service BluetoothDevice BluetoothServerSocket BluetoothSocket android.content SharedPreferences android.database.sqlite SQLiteCursorDriver SQLiteOpenHelper android.graphics Bitmap android.location LocationListener Geocoder GpsStatus GpsStatus.Listener GpsStatus.NmeaListener GpsSatellite android.media AudioFormat AsyncPlayer AudioRecord AudioRecord.OnRecordPositionUpdateListener ThumbnailUtils AudioManager android.net TrafficStats MailTo LocalSocket android.os AsyncTask AsyncTask.Status CountDownTimer Message MessageQueue HandlerThread android.text Html android.util JsonWriter android.view ContextMenu ContextMenu.ContextMenuInfo Display ViewManager View ViewStub ViewTreeObserver ViewParent WindowManager GestureDetector Gravity MenuInflater ScaleGestureDetector SoundEffectConstants android.view.inputmethod InputConnection InputMethod InputMethodSession BaseInputConnection InputMethodManager android.widget AbsListView AbsListView.LayoutParams AbsListView.OnScrollListener AbsListView.RecyclerListener AbsoluteLayout AbsoluteLayout.LayoutParams AbsSeekBar AbsSpinner AdapterView AdapterView.AdapterContextMenuInfo AdapterView.OnItemLongClickListener AdapterView.OnItemSelectedListener AdapterView.OnItemClickListener AnalogClock BaseAdapter BaseExpandableListAdapter Button CheckBox CheckedTextView Checkable Chronometer Chronometer.OnChronometerTickListener CompoundButton CompoundButton.OnCheckedChangeListener CursorAdapter CursorTreeAdapter DatePicker DatePicker.OnDateChangedListener DialerFilter DigitalClock EditText Filter Filter.FilterListener Filter.FilterResults ExpandableListAdapter ExpandableListView.OnChildClickListener ExpandableListView.OnGroupClickListener ExpandableListView.OnGroupCollapseListener ExpandableListView.OnGroupExpandListener Filterable Gallery Gallery.LayoutParams GridView GridLayout GridLayout.Alignment RadioGroup ImageView ImageView.ScaleType HorizontalScrollView ImageButton ImageSwitcher FilterQueryProvider ListAdapter ListView MediaController MultiAutoCompleteTextView MultiAutoCompleteTextView.CommaTokenizer MultiAutoCompleteTextView.Tokenizer QuickContactBadge RadioButton RatingBar RatingBar.OnRatingBarChangeListener RelativeLayout RemoteViews ResourceCursorAdapter ResourceCursorTreeAdapter Scroller ScrollView SearchView SearchView.OnCloseListener SearchView.OnQueryTextListener SearchView.OnSuggestionListener SeekBar SeekBar.OnSeekBarChangeListener SimpleAdapter SimpleAdapter.ViewBinder SimpleCursorAdapter SimpleCursorAdapter.CursorToStringConverter SimpleCursorAdapter.ViewBinder SimpleCursorTreeAdapter SimpleCursorTreeAdapter.ViewBinder SimpleExpandableListAdapter SlidingDrawer SlidingDrawer.OnDrawerCloseListener SlidingDrawer.OnDrawerOpenListener SlidingDrawer.OnDrawerScrollListener Spinner SpinnerAdapter WrapperListAdapter TabHost TabHost.TabSpec TextView TimePicker TimePicker.OnTimeChangedListener Toast TableLayout TableLayout.LayoutParams TableRow TableRow.LayoutParams TabWidget TextSwitcher ToggleButton TwoLineListItem VideoView ViewAnimator ViewFlipper ViewSwitcher ViewSwitcher.ViewFactory ZoomButtonsController ZoomButtonsController.OnZoomListener ZoomButton ZoomControls dalvik.system DexFile
文字


GpsSatellite

版本:Android 3.2 r1

結(jié)構(gòu)

繼承關(guān)系

public final class GpsSatellite extends Object

java.lang.Object

android.location.GpsSatellite

類(lèi)概述

此類(lèi)用于描述當(dāng)前GPS衛(wèi)星狀態(tài)。和GpsStatus聯(lián)合使用。

公共方法

public float getAzimuth ()

返回衛(wèi)星的方位角,方位角范圍0360度。

返回值

衛(wèi)星的方位角

public float getElevation ()

返回衛(wèi)星的高度角,高度角范圍090

返回值

衛(wèi)星的高度角

public int getPrn ()

返回偽隨機(jī)噪聲碼,

(譯者注:所謂偽噪聲碼,不是衛(wèi)星編號(hào),是一個(gè)具有一定周期的取值01的離散符號(hào)串,它具有類(lèi)似于白噪聲的自相關(guān)函數(shù)

返回值

偽隨機(jī)噪聲碼

public float getSnr ()

返回衛(wèi)星的信噪比。

(譯者注:即放大器的輸出信號(hào)的電壓與同時(shí)輸出的噪聲電壓的比,常常用分貝數(shù)表示。設(shè)備的信噪比越高表明它產(chǎn)生的雜音越少。一般來(lái)說(shuō),信噪比越大,說(shuō)明混在信號(hào)里的噪聲越小,聲音回放的音質(zhì)量越高,否則相反)

返回值

衛(wèi)星信噪比

public boolean hasAlmanac ()

如果GPS引擎有近似軌道信息則返回true

返回值

如果GPS引擎有近似軌道信息則返回true

public boolean hasEphemeris ()

如果GPS引擎有衛(wèi)星星歷則返回true

(譯者注:衛(wèi)星星歷用于描述太空飛行體位置和速度的表達(dá)式)

返回值

如果GPS引擎有衛(wèi)星星歷則返回true

public boolean useInfix ()

當(dāng)衛(wèi)星被GPS引擎用于計(jì)算最近位置時(shí),返回true

返回值

當(dāng)衛(wèi)星被GPS引擎用于計(jì)算最近位置時(shí),返回true

補(bǔ)充

文章精選

[百度百科]GPS

[百度百科]GPS定位技術(shù)


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