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 Global Positioning System Fix Data 12
1. simulator simulating Gps
When simulating Gps in a simulator, you must first Open the DDMS view. In eclipse, choose Windows> Open Perspective> Others> DDMS.
In the DDMS view, open the Emulator Control tab, select the Manual sub-tab in the Location Controls group, enter the value in the longitude and latitude, and click Send to simulate a single Gps Positionin
In the past few days, GPS on WM wanted to obtain satellite data and found some information. There are two possible methods: 1, the Traditional GPS Programming Method reads data from the GPS device through the serial port, parses and processes the data. 2. Apply the gpsid function library provided by Windows Mobile to interview the Traditional
GPS drift has always been a headache for users and manufacturers. It is also the first choice for many users to choose GPS. Good product positioning is accurate and the drift is very small. So how can we improve GPS drift?
1) software-only Method.
Filter by softwareAlgorithmFilter data on devices or on the positioning platform. This method is often used in th
Scenario: the longitude and latitude coordinates of two GPS points are known. Calculate the distance between two points.
1.Distance/latitude relationship
GPS: 22.514519, 113.380301
GPS: 22.511962, 113.380301
Distance: 284.6439379583341
Jl_wd = 284.6439379583341/(22.51451-22.511962)
= 111712.69150641055729984301412873 (meters/degree)
2.Distance/longitude re
Use of the Exifinterface class to write GPS information to a picture in JPEG formatJPGE format is one of the image compression format, JPG belongs to one of these; if we need to write the GPS information to the picture itself is relatively simple, get the picture handle exifinterface on it, but I have encountered a few problems in the process, After the settlement, we will consider writing this piece for yo
I was developing androidProgramWhen calling GPS, they all use functions directly.
Public void
Requestlocationupdates
(Long mintime, float mindistance, Criteria, pendingintent intent)
However, the customer recently said that the GPS of the mobile phone is not accurate enough, so he learned about the two parameters in the function signature from the Google developer website. If there is any inac
Currently, common GPS navigators on the market are basically based on Windows CE 5.0/6.0. Most manufacturers hide and disguise the operating system. In particular, brand-name machines are even more hidden. (This is a good practice for shangzhai machine. The wince startup interface is directly open to users)
My students recently purchased a q70 navigator because they needed a platform to demonstrate software for their course design (embedded softw
First of all, the methods in this article have limitations. In the case of GPS data defects, the resolution will not be successful!
Http://www.regexlab.com/zh/regref.htm
It is unrealistic to use sscanf or strtok to parse the following three statements and succeed:
Char str1 [] = "$ uplmc, 121252.000, A, 3958.3032, N, 11629.6046, E, 15.15, 359.95, 070306, A * 54 ";Char str2 [] = "$ uplmc, 013244.013, V, 2949.0092, N, 12133.1459, E, 290908, N * 78 ";
When I use Baidu map to display my bus routes, I need to use GPS longitude and latitude. However, we all know that when obtaining GPS information on the simulator, I use location loc = locationmanager. getlastknownlocation ("GPS"); To obtain location information, but LOC is usually null during debugging. The reason is that the simulator cannot directly obtain the
Instance download: http://download.csdn.net/detail/fcgksoso/3690014
Some time ago, I did some development work related to data parsing of GPS receivers, because I had to parse the positioning data of GPS receivers and read the motherboard description of a certain model of Novatel, if you have some knowledge about this, record it and make a memo.
Currently, satellites of different purposes are flying in
Php uses the Baidu Map API for IP location and GPS location. Recently, a mobile-side webapp map application is developed, and the core content is Positioning. However, there are several methods for locating IP addresses, GPS positioning and base station positioning (this seems to be useless for webapp), then the core gps positioning and ip location are left. we k
Introduction
The rapid development of satellite navigation technology has gradually replaced the traditional navigation technology, such as radio navigation and astronomical navigation, and become a widely used navigation and positioning technology, and has made great progress in precision, real-time, all-weather and so on. It is not only applied in many civil fields such as physical exploration, ionospheric measurement and spacecraft navigation, but also has been widely used in military field-
This article illustrates the Android programming approach to acquiring GPS data. Share to everyone for your reference, specific as follows:
GPS is an important part of the Android system, and it can be used to derive many position-related applications.
Android's GPS has a specialized management class called Locationmanager, and all
GPS positioning is now a lot of mobile phones have the function, and very practical. This paper describes the use of GPs positioning in Android in the form of an example. Share for everyone to use for reference. The specific methods are as follows:
Generally in Android to obtain the current position via GPS, first of all to obtain a Locationmanager instance, thr
For the GPS software platform, although there is a very rich PC-side or BS client, but customers also need to mobile clients as their own auxiliary tools, is also needed. As a GPS platform for designers and developers, in the development of mobile clients, also need to from the conventional server development and client development thinking, change, of course, the needs of customers also need to change, bec
After obtaining the Location service, request the network and gps Location updates at the same time, and then the Location information of the network and gps will be reported at the same time. When there is no gps signal, the location information of the Network Positioning is automatically obtained. If there is a gps s
Recently in a mobile phone WebApp map application, and the core content of course is positioning, but the location of the words there are several ways, IP location, GPS positioning, base station positioning (this seemingly webapp use), then the core of the GPS positioning and IP positioning, we know that HTML5 has a location API, but the GPS data that the API get
A piece of news I saw online in Zhongguancun, I think the one I used in NRC is similar to this one, but the name is different. Ar has been paying attention to it for a long time. It seems to be a promising technology, especially in the convenience of entertainment games. It can be used as a good way to connect virtual reality with reality.
In the end, I cannot help but feel that these new things are all on the iPhone. It seems that I have to get an iPhone .....
Http://gps.zol.com.cn/195/1955
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.