Android中文手册
简体中文(ZH-CN) English(EN) 繁体中文(ZH-TW) 日本語(JA) 한국어(KO) Melayu(MS) Français(FR) Deutsch(DE)
annuaire recherche
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

©
Ce document utilise Manuel du site Web PHP chinois Libérer

personnages


GpsSatellite

版本：Android 3.2 r1

结构

继承关系

public final class GpsSatellite extends Object

java.lang.Object

android.location.GpsSatellite

类概述

此类用于描述当前GPS卫星状态。和GpsStatus联合使用。

公共方法

public float getAzimuth ()

返回卫星的方位角，方位角范围0至360度。

返回值

卫星的方位角

public float getElevation ()

返回卫星的高度角，高度角范围0至90度

返回值

卫星的高度角

public int getPrn ()

返回伪随机噪声码，

（译者注：所谓伪噪声码，不是卫星编号，是一个具有一定周期的取值0和1的离散符号串，它具有类似于白噪声的自相关函数）

返回值

伪随机噪声码

public float getSnr ()

返回卫星的信噪比。

（译者注：即放大器的输出信号的电压与同时输出的噪声电压的比，常常用分贝数表示。设备的信噪比越高表明它产生的杂音越少。一般来说，信噪比越大，说明混在信号里的噪声越小，声音回放的音质量越高，否则相反）

返回值

卫星信噪比

public boolean hasAlmanac ()

如果GPS引擎有近似轨道信息则返回true

返回值

如果GPS引擎有近似轨道信息则返回true

public boolean hasEphemeris ()

如果GPS引擎有卫星星历则返回true

（译者注：卫星星历用于描述太空飞行体位置和速度的表达式）

返回值

如果GPS引擎有卫星星历则返回true

public boolean useInfix ()

当卫星被GPS引擎用于计算最近位置时，返回true

返回值

当卫星被GPS引擎用于计算最近位置时，返回true

补充

文章精选

[百度百科]GPS

[百度百科]GPS定位技术


Article précédent： Article suivant：