nmea gps

GPS (global positioning system), Global Positioning System:GPS consists of three parts:1. Space:The spatial part of GPS is composed of 24 working satellites. It is located over 20 200km of the earth's surface, evenly distributed on 6 orbital planes (4 in each orbital plane), and the orbital angle is 55 °. In addition, three active backup satellites are running in orbit. The distribution of satellites allows

From: http://www.gpsinformation.org/dale/nmea.htm The most important NMEA sentences include the GGA which provides the current fix data, The RMC which provides the minimum GPS sentences information, and the GSA which provides the satellite status data. GGA-Essential fix data which provide 3D location and accuracy data. $GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,545.4,M,46.9,M,,*47Where: GGA

The NMEA-0183 protocol is designed to establish a unified BTCM (Maritime Radio Technical Committee) standard in different GPS (Global Positioning System) navigation equipment, by the National Oceanic Electronics Association (nmea-the Nation Marine Electronics Associa-tion) set up a communication protocol. GPS receiver

receiver output data format NMEA-0183 is a universal interface standard developed by the National Oceanic Electronics Association for asynchronous communication of marine instrument data. It is a string consisting of ASCII characters.GPS receiver outputs GPS positioning data in NMEA-0183 standard format,The data terminal device needs to obtain the location infor

Introduction: In our application to provide users with location services, often want to provide users with accurate point of location services, which requires the user to cooperate. We must first detect the user's mobile phone's GPS is currently open, if not open, pop-up dialog box prompt. If users do not cooperate with us, we can only use the base station positioning method. If our application must be opened by the user to use the

Android --- 58 --- GPS Positioning for beginners, android --- 58 --- gps GPS is short for Global Positioning System. Android provides a dedicated LocationManager and Location manager for the GPS function. All services and objects related to GPS positioning will be generated

The GPS uses the message queue from the LOC_API layer to the LOC eng layer in the approximate format: sendmsg (new XXX), which will eventually be sent to the message queue, read in Loopmain, and then call MSG's log () and proc respectively ( ) to handle the corresponding message, so it is necessary to understand the general flow of this message queueThe GPS message Queue interprocess communication is divide

1 How to fake GPS?GPS fake There's a strange phenomenon you need to put fake GPS code into a service without knowing if the system is the source of the fake information. The results of the experiment are required to be placed in the serviceThe code is roughly as followsPackage Com.yiqiding.ktvbox.view.service;import Java.lang.reflect.method;import Android.app.ser

PHP calculate Baidu Map Two GPS coordinates distance between the method, GPS coordinates In this paper, we describe the method of calculating the distance between two GPS coordinates of the Baidu map in PHP. Share to everyone for your reference. The implementation method is as follows: Copy CodeThe code is as follows:/*** Calculate the distance between two coord

accuracy is 5-10 meters, and the worst is 25 meters (95% Wide Sky)Update Rate: 1 second Positioning time:The cold start time is about 50 seconds.The warm start time is about 35 seconds.The hot start time is about 8 seconds. Location format: WGS84 Operating temperature:-10 °C to 40 °C Interface: complies with the 2.0 Bluetooth specification, serial port mode, and 3.01 NMEA 0183 (with dedicated extension statements) Applicable models: Symbi

Introduction to the GPS software of G1 and how to enable the GPS module We still use G1 as an example. G1 is equipped with a hardware GPS chip. However, most of the available GPS maps in G1 currently do not support offline image libraries, that is to say, you must ensure that you have a cmnet or Wi-Fi connection

First, IntroductionThe data interchange format between the GPS (Global Positioning System) receiver and the handset is usually customized by the manufacturer, and its definition content is difficult for ordinary users to know, and the control applications configured by different brands and different models of GPS receivers are different depending on the manufacturer. Therefore, for general purpose

(GPS logging) Velocity accuracy: 0.1 knot RMS steady state Flash memory size: 8 megabytes Update rate: 1 sec. Continuous Charging indicator: Red lights on when charging Operation Time 15 hours in continuous use after batteries are fully charged inPower saving mode Environmental Conditions Dynamics: Up to 50 m/s.s. (tracking sustained) Temperature: Operating:-30? ~ + 75?Storage:-40?

Recently in the commissioning of the GPS Beidou dual mode, has been debugging now, the following is a few words involved.GPS:GPS is the abbreviation for the English Global Positioning System (GPS). GPS started in 1958 with a U.S. military project, which was put into use in 1964. In the 1970s, the United States Armed Forces jointly developed a new generation of sa

Analysis and Solution to common problems of porting GPS applications in LinuxOS: Linux 1. directly provide functions for third parties Cause: the design of the main chip and the change of the GPS chip often make the GPS driver updated. Evolution:Provide the. So Dynamic Link Library and. h header file to third parties2. Write the

Recently, focused on the field of digital player Newman launched a based on GPS navigation-oriented MP4 player, model for E666, and the price of 1999 yuan to the market has brought absolute shock. Newman E666 equipped with 3.5-inch 260,000 color TFT touch screen, resolution up to 320x240, image clear, exquisite. As a GPS navigator, Newman E666 has a global positioning and navigation function, satellite pos

The graduation design needs to use the Android GPS location, summarizes these days to learn about the GPS related.For testing, the layout file is simple and only two TextViewRelativelayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"Android:keepscreenon= "true"Tools:context=

/*** Determine if the GPS is on, GPS or aGPS to open a thought is open *@paramContext *@returnTrue indicates that the open*/ Public Static Final BooleanIsgpsopen (Finalcontext Context) {Locationmanager Locationmanager=(Locationmanager) Context.getsystemservice (Context.location_service); //GPS satellite positioning, positioning level can be accurate to the st

In many of the current GPS platforms, there are a lot of legacy projects based on Asp.net+siverlight development, the code is confusing and difficult to maintain, various couplings and associations, the interface is not seen much better than the control of JavaScript, with the increase in demand, The platform is bloated.Design based on. NET of the GPS platform, we have steadfastly chosen to be based on jque