Hi there,
I need to make an application for a smart device. This application should be able to access the GPS (the device must have GPS) on the COM ports and collect data so that I can calculate the distance when the device is moving. Other requests are that the device should run Windows Mobile and have UMTS capability. I will be using . NET platform for writing the application, so if someone has done this before or something similar and can help me with anything from advices to code snippets or even the application itself, I will be forever thankful .
The big question I have in the beginning is what device suits best this description. I want to use the classic ASUS 636n but it has no UMTS capability.
thanks to admins for this great forum , see ya
Hello,
I am new to the forum and also the owner of an HTC Fuze. I have been playing around recently with the GPS on the phone and got me thinking. I live in NY and we have a CORS network of gps base stations that are fed by the use of ntrip.
I was wondering if their was any way to use the gps signal on my phone and the connection to this CORS network to give me sub inch accuracy on my phone...then not sure what I would do with it then. But I do live on a farm and I would like to see some type of precision agricultural use.
I guess I need a way to have the GPS on the phone talk with the GNSS internet radio and then give me spot on guidance and such.
Please let me know your thoughts or if I need to explain better.
Thanks,
Clayton
bump
bump. Any ideas? Anyone
Great idea cwrisrey !
That will save the cost of a geodetic device, which is many times the cost of a Fuze. Further, it will lead the accuracy of the buildin GPS into millimum class.
Not dig into this further, would you go further to tell these:
Is that CORS data encrypted?
Is that accessible through public internet or VPN?
Is there copy right or intellectuall property right issue involved? (I don't think so, but better make it clear first)
Once again, great idea. Please do remember to update this thread once you got any progress. Thanks.
More info
Hello wg5566,
This site would probably answer alot of your questions clearer than I could:
http://www6.nysdot.gov/spiderweb/frmIndex.aspx
* Is that CORS data encrypted?
-I don't believe so, I think that it is just a form of compression, to distribute across the internet.
* Is that accessible through public internet or VPN?
Yes, the NYS CORS anyway. It accessible from the public internet (although they require you to register with them) But I believe there are other free streams. I also believe it was modeled after being able to be sent threw GPRS.
* Is there copy right or intellectuall property right issue involved? (I don't think so, but better make it clear first)
-I believe the ntrip is based on a GNU, I think the source code is available. http://igs.bkg.bund.de/index_ntrip_down.htm
Windows CE version:
http://www.ilmb.gov.bc.ca/crgb/gsr/downloads/installGNSS.CAB
Please, let me know your thoughts...
Thanks,
Clayton
My fast thoughts:
First make sure there is no satisfied freeware currently available for WM.
If so please ask a moderator to move this to the development & hackings section. And Add tyis sentence on the title: Call for developers for revolutionary GPS app!
I'm sure somebody here can develop this. You know the geodetic device was invented many years ago with very weak profiles comparing to current WM devices. The hardware on our phone should be capable to deal with these calculations, and the WM Pro platform should be capable to support such an app. Anyway it should not be a biggy for many masters here. But it is a biggy for gps users with high accuracy demand for any reason.
Edit: Did you try install that wince cab on your phone? I think some of WINCE apps can just run on WM. Please backup your data first.
Edit2: I tried to install it on my device, at first it did not show up in start menu, then I found the cab just put files and shortcut in the folder names in French. But there is no registry involved in the cab. Only three files. And then program UI itself is in English. Just run the executable from the folder will go right out of the box. So please try it. I did not try to connect & loggin yet, due to not registered account.
Edit3: Looks like the cab is only access the data from internet, convert the data format and export the data, but we still need a geodetic/gps software to process/use the data.
Disclaimer: I attatched these three files for the only purppose of exchanging software developement infomation. Anybody if download it please do not use it for any purppose other than this. Thanx.
Some thoughts on the subject
Hi All,
The idea of using NTRIP to make a Windows Mobile GPS device sub-meter accurate crossed my mind. After some research I found this thread.
Unfortunately, I haven't been able to find any software capable of doing this. My idea is that it should be possible to accomplish this goal, using a combination of existing tools (which would be really cool!).
As wg5566 notes, there is a (WM) tool called GNSS Internet Radio, which is capable of downloading NTRIP corrections. It turns out this software works, but does have some flaws. Someone wrote another open source tool which is better (?), but unfortunately it isn't built for Windows Mobile (see: http://lefebure.com/software/).
More searching revealed a (dead?) project on codeplex: SharpGPS. It's an unfinished demo. It does however seem to be designed to do exactly what we're suggesting in this thread.
My idea: Completing the WM version of SharpGPS with parts of GNSS Internet radio / lefebure NTRIP client should result in a tool that's capable of upgrading a WM devices' gps signal to sub-meter accuracy through RTK/DGPS corrections over NTRIP.
Any ideas / suggestions about this?
It's already been done for the commercial market
Land surveyors, construction companies, and farmers use RTK GPS and RTK GNSS correction services on a regular basis. Some are free and some are paid subscription. They can be either NTRIP protocol with casters or individual TCP or UDP connections. Examples of software available are Carlson SurvCE and MicroSurvey. Read Carlson's support site for how they deal with the data flow using such networks on SurvCE (Windows Mobile and CE).
I have worked in land surveying using such equipment, and it generally requires dual frequency receivers, RTK corrections, and high quality antennas to achieve 1-2cm 95% CI horizontal precision. The current GPS chips in cell phones are only single frequency and so the best you could expect under ideal conditions is 2'-3' precision using some form of differential correction like WAAS or beacon or DGPS via NTRIP. Under average conditions, the precision will likely be in the 10-20' range. The dual frequency receivers take care of the large errors caused by radio waves traveling through the ionosphere.
Due to the limitations of batteries, antennas, and space for more chips in cellphones, the future of location accuracy will likely include some combination of GPS/GLONASS and cellular radio signal frequency timing calculations from cell towers. True Position, with its U-TDOA technology, is one example of measuring the time differences of cell phone radio waves using cell towers with known coordinates. Rumors (from surveying journals) have it that there are current patents in place that can allow for sub foot precision using such methods when sufficient cell towers are present for multilateration.
Has anyone found success on this topic? WM or Android...
Would be very interested, since there is a free NTRIP feed available in Switzerland... anyone?
*bump* it up
Been there still trying. Problem is no carrier phase off internal gps.
Grimli said:
Hi All,
The idea of using NTRIP to make a Windows Mobile GPS device sub-meter accurate crossed my mind. After some research I found this thread.
As wg5566 notes, there is a (WM) tool called GNSS Internet Radio, which is capable of downloading NTRIP corrections. It turns out this software works, but does have some flaws. Someone wrote another open source tool which is better (?), but unfortunately it isn't built for Windows Mobile (see: /lefebure.com/software/).
Click to expand...
Click to collapse
Lance lefebure is a really cool guy I'm sure he wouldn't have any problem building a wm version but it is going to takea lot more than that to get rtk to a cell phone.
Very good ,thanks.
Ed hardy bikini said:
Very good ,thanks.
Click to expand...
Click to collapse
If you are confused just ask questions and I will do my best to answer them. I am in the ag industry and deal with RTK networks and different ways of connecting them and tons of different gps units on a daily basis.
Look at this:
http://stakemill.wordpress.com/2010/07/19/ashtech-mobile-mapper-100-supports-esri-arcpad-10-0/
and this:
http://www.ashtech.com/-2359.kjsp?RH=1272644205746&RF=1270806507068
Is that still a phone !?
wg5566 said:
Look at this:
Is that still a phone !?
Click to expand...
Click to collapse
Nope PDA with support for external GPS with a builtin reciever that even sees glonass satellites (russian constelation). That was made specifically to do RTK mapping. It does have a GSM radio for data to connect to the cors.
Phone positioning using CORS
To perform a CORS (Network Reference correction we need a GGA stream from the GPS in your device. This allows us to remove the anomalies and provde the correction stream. As phones use a sirf II chip or similar they do not have input capability to output the NMEA stream to achieve this.
This one works great! it will connect to an Rtk receiver and get the nmea string from it or will use the internal GPS to be able to register on the CORS network. It will then stream the corrections over Bluetooth to a receiver or even a repeater radio. It won't however correct the internal GPS. http://antrip.dyndns.biz/Home/DownloadTrial
I purchased a Samsung GTi9505 S4 running Android 4.2.2 from Euope recently and can anyone explain to me on how to install this APP?
I have these on my phone (pls see attached pics).
http://www.engadget.com/2013/02/25/samsung-safe-with-knox/
There are NO instructions on installing it. I looked all over on the web and nothing.
Only downloaded the KNOX Whitepaper.
I presume, this only works for North American based phones. But can someone shed some light on this please?
Thanks
It'll probably require some form of MAM (Mobile Application Management) product to be able to manage the applications within this 'sandboxed' environment. Applications will probably need to be specifically written to utilise it so its probably early days yet mate.
Unless I've got it completely wrong of course!
Working for a large organisation that requires this level of security - I requested further information from samsungs website but havn't had a single response yet. I'm assuming its still in development.
zoomee said:
It'll probably require some form of MAM (Mobile Application Management) product to be able to manage the applications within this 'sandboxed' environment. Applications will probably need to be specifically written to utilise it so its probably early days yet mate.
Unless I've got it completely wrong of course!
Working for a large organisation that requires this level of security - I requested further information from samsungs website but havn't had a single response yet. I'm assuming its still in development.
Click to expand...
Click to collapse
I know that the DoD got it approved from DISA.
http://gcn.com/articles/2013/05/29/disa--ios-android-stig.aspx
But Im not working in that environment. Its more like I want to keep my personal data apart from the enterprise environment.So, I want to have my business data under KNOX and personal data on the normal Interface like shown on this video.
Thats all.
http://www.youtube.com/watch?v=t_jTit_RCdI
And on the box itself, it DOES have the "SAFE" on it. (Samsung For Enterprise)
That vid is a very brief overview mate. Looking at the feature list for knoxx it seems to me to be an enterprise level function. Integration with Active Directory, single sign-on and other MDM products sort of implies that, thats what it will work with and not just for normal end users.
For normal end users - it would just be 'another profile' feature which I don't see much benefit for, as android phones/devices tend to be personal devices. However for the enterprise where we regularly deploy BYOD solutions and corporate devices it seems much more fitting
Sorry bud - probably not what you wanted to hear but until we get further information from them theres not much we can do to utilise it (i'm sure i've seen a knoxx.apk on our devices already)......
If anyone else knows anything else it would be great to hear from them.....
PS - You might want to recommend either Excitors DME product or Good's BYOD one to your IT department
I also work at a large enterprise shop and we are looking at deploying Samsung devices with the Knox functionality. However, I read somewhere that the Knox software was not ready for the worldwide release of the Galaxy S4. It will be available later in the summer on the Galaxy S4 (later for other Samsung devices) on what I assume will be a firmware update. So there is no way to get it on your device right now. Hope this helps.
itsonlyme999 said:
I purchased a Samsung GTi9505 S4 running Android 4.2.2 from Euope recently and can anyone explain to me on how to install this APP?
I have these on my phone (pls see attached pics).
http://www.engadget.com/2013/02/25/samsung-safe-with-knox/
There are NO instructions on installing it. I looked all over on the web and nothing.
Only downloaded the KNOX Whitepaper.
I presume, this only works for North American based phones. But can someone shed some light on this please?
Thanks
Click to expand...
Click to collapse
zoomee said:
It'll probably require some form of MAM (Mobile Application Management) product to be able to manage the applications within this 'sandboxed' environment.
Click to expand...
Click to collapse
^^^^^
This.
And it offers no value to an individual user even if they managed to get it set up. For basic remote device management Find my Mobile (ex-Samsung Dive) offers what most users are looking for without all the complexity.
Ok, well thats that...
Anyway, even if I did have it installed and working on my phone, then I would be concerned of more memory use and more battery drainage with this KNOX feature enabled.
Think about it, its like running two versions of Android on ONE phone. So this might be draining even more battery.
Thanks guys.
Hi,
I am new to this forum. Although I have had a XDA (not sure if this forum relates to that smartphone of a decade ago), I am a consumer and no developer what so ever. I have not much technical knowlegde, so please bear with me if I don't get some things that are crystal clear to you guys. Also, my English is pretty poor.
My question: I have a Simvalley XT-930 dumbphone as a backup phone while travelling. It also has GPS and can get GPS coordinates. What I miss is an app on the phone to store and find back waypoints. I don't need anything fancy with maps or satellite photographs. An arrow pointing in the right direction, and the distance would be the major functionality I need. To find back that bus station, meeting point, parked car in a foreign city, etc.
The good thing is that the phone supports Java based apps. I tried VLKGPS 0.9.4, but it crashes because the Midlet is not supported.
Do you guys know an app with the functionality I am looking for and that would work on my phone?
Hello everyone, if you actually are reading this I might need your help.
To be clear, I am not the guru of coding - more of a hobbyist - but i got myself a huawei laptop recently and found out that huawei made an application that gives possibility to use multiscreen, after diggin a bit i got °pcassistant° app on my samsung, and tecnically it does "work" for sharing files and backup some stuff but not the multiscreen part of it (which i was interrested in to be honest) so here i am asking if someone could help to find out how to bypass the lock on the application ^_^ attaching app and the decompile.
Thanks!