Positioning GPS positioning and base station positioning: GPS positioning is based on satellite positioning, the need to open the head, positioning error in 2-10 meters, the base station network positioning is based on distance from the mobile phone positioning, the error is large, as long as the mobile phone has a signal can be located; Getting GPS information i
Detailed explanation of GPS NMEA-0183 Protocol
NMEA AssociationThe purpose of this discussion is to establish a unified btcm (maritime radio technology commission) standard in different GPS (GPS) navigation devices by the National Oceanic Electronics Association (NMEA-National Marine ElectronicsA set of communication protocols developed by Associa-tion. Accordi
The project needs to complete a small demo without talking nonsense. The Code is as follows:
Public class gpsactivity extends activity {private edittext; private textview TV _gps; @ override public void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. GPS); edittext = (edittext) findviewbyid (R. id. edittext); TV _gps = (textview) findviewbyid (R. id. textview1); registergps ();} public locationma
Absrtact: This paper introduces an electronic navigation and remote monitoring system based on the combination of GPs and GPRS. The position information data of the GPS module output is sent to the micro industrial computer through the RS-232 serial interface, the GIS running on the industrial control computer shows the current position of the vehicle, realizes the autonomous navigation, meanwhile, uses the
We show you how to build a location awareness task list application for a windows mobile device that uses GPS to send you a task reminder at the appropriate time and location.
Download the sample source code or material in this article
This article uses the following technologies:
Windows Mobile 6, mappoint
This article introduces the following:
Mappoint Web Service
Cache tasks and maps
Obtain the required neighboring points.
Create a task
Directory
U
system.
Inertial Navigation SystemINS is an auxiliary navigation system that uses a accelerometer and gyroscope to measure the acceleration and rotation of an object and uses a computer to continuously estimate the position, attitude, and speed of a moving object. It does not need an external reference system and is often used on airplanes, submarines, missiles, and various spacecraft.
GPS (global positioning system) Global Satellite Positio
The Delphi Xe6 for Android Locationsensor control defaults to the use of network positioning, the application of high positioning accuracy requires that we can modify the original code to directly specify the GPS location.Modification Method:Copy the C:\Program Files\embarcadero\studio\14.0\source\rtl\common\system.android.sensors.pas to your project directoryOpen System.Android.Sensors.pas to find function TUIAndroidLocationSensor.DoStart:Boolean, an
Change of location service in IOS8 (Cllocationmanager protocol method does not respond, unable to return the GPS method, does not appear to get permission prompt)Recently, when writing a lbs project, because of the adaptation of IOS8, the project was migrated to the Xcode6.0.1, there was a problem that could not get the location service permissions properly. Self.manger = [[Cllocationmanager alloc]init];self.manger.distancefilter = Kcldistancefilterno
Today, there is a CSDN community event to answer questions about learning, understanding, and development of Android systems, and to understand the fundamentals of the Android Framework with an in-depth understanding of Android:wi-fi, NFC and GPS volumes. Activity Link: http://bbs.csdn.net/topics/390765275?page=1#post-397228045This event has been completed, thank you for your support. The three brothers who won the award are:The following welcome ever
Welcome to add ArcGIS API for Android QQ Exchange Group: 337469080First talk about the reasons for writing this article, in the process of discussion in the group, someone mentioned the problem of positioning, just, I have done related work when the relevant things, so summed up, to share out, because I level limited, the bug is unavoidable, but also hope that a higher high man criticized. Nonsense not much to say, directly into the subject.To locate on the map and display the positioning result
C # code to verify the validity of GPS data,
A simple code used to verify the effectiveness of GPS message commands. Keep it.
Public static bool Verify (string gpsInfo ){If (gpsInfo = null | "". Equals (gpsInfo ))Return false;Char p = gpsInfo [0];Char c = (char) 0;Int I = 1;For (; I {P = gpsInfo [I];If (p = '*')Break;C ^ = p;}If (p! = '*')Return false;Return gpsInfo. Substring (++ I). Equals (string. Format
first, determine whether the network connection is availablePublic Static Booleanisnetworkavailable (Context context) {Connectivitymanager cm=(Connectivitymanager) context. Getsystemservice (Context.connectivity_service); if(cm = =NULL) { } Else{//if it is only used to determine the network connection//You can use Cm.getactivenetworkinfo (). isavailable (); Networkinfo[] Info =Cm.getallnetworkinfo (); if(Info! =NULL) { for(inti = 0; i ) { if(inf
because the project to use GPS positioning, learning the next, then the learning results recorded.To add permissions in the manifest file: several objects used, Locationmanager, Locationlistener, location.*locationmanager Location Manager, you must first create a Locationmanager object if you want to manipulate the device. Locationmanger locationmanager= (Locationmanager) This.getsystemservice (Context.location_service);* Locationlistener position
time; // an important function that listens to the data test Manager. requestlocationupdates (locationmanager. gps_provider, 6000, 10, locationlistener);}/* update here. When the activity is not in the active state, cancel the GPS listening */Public void onpause () {super. onpause (); locationmanager. removelistener (locationlistener);} // create an event listener priv Ate final locationlistener = new locationlistener () {public void onlocationchange
In GPS devices, there are different display methods for coordinate units, with degrees (DMS) and degrees (DDD ).
For example, the GPS coordinates of the window Pioneer Park in bancang Street, Xuanwu District, Nanjing are as follows:
Minute second (DMS): longitude E 118 degrees 48 minutes 54.152 seconds north latitude N 32 degrees 04 minutes 10.461 seconds
Degree (DDD): E 118.815033 degrees N 32.069723 degr
First, open the simulator.
Then, connect to the simulator
C: \ Users \ billgates> Telnet localhost 5554
Android Console: Type 'help' for a list of commandsOK
5554 indicates the port of the simulator on the local machine. You can use ADB devices to view the Port:
C: \ Users \ billgates> ADB Devices
List of devices attachedEmulator-5554 Device
Connect to the simulator and enter the HELP command to view help. Enter the command and press enter to view the command format.
GEO is
1. Add the convertor. JS File
2. Add Baidu map Annotation
Function loadmarker (X, Y, oap_name) {If (! X) {return} // correct the GPS deviation var iconv = ".. /.. /.. /icons/access_point_b64.gif "; var iconu = ".. /.. /.. /icons/access_point_r64.gif "; var iconsize = new bmap. size (64, 64); // mark the image size var offsetsize = new bmap. size (32, 32); // offset bit // var point = new bmap. point (x, y); var icon = new bmap. icon (iconv, iconsize
After running the following code, if the GPS status is enabled, it is disabled. If the GPS status is disabled, it is enabled. 2.3.6 The test is feasible.
Private void togglegps (){
Intent gpsintent = new intent ();Gpsintent. setclassname ("com. Android. Settings", "com. Android. settings. widget. settingsappwidgetprovider ");Gpsintent. addcategory ("android. Intent. Category. Alternative ");Gpsintent. setda
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