Visualizing site coverage with Google Earth (slow for dial-up)

Postby bitcorruption » Mon Mar 20, 2006 9:52 pm

I mentioned about this in another thread, but thought it would be appropriate here as well. I am in the midst of creating a program I call Clearwave that uses interpolation to generate a kml file for Google Earth. I would bypass the whole Google Earth part, but I don't know of any free API's out there for C++ that allow for connections to satellite imagery servers. It is created in C++ and takes roughly a minute to interpolate the area of a very large parking lot on my machine. You may ask, "How is this different that what other people have?" See for yourself:

http://www.bitcorruption.com/clearwave1.jpg

http://www.bitcorruption.com/clearwave2.jpg

http://www.bitcorruption.com/alerus1.jpg

The program parses Netstumbler data and then creates an overlay for Google Earth so you can see the "actual" signal coverage. I'm trying hard to get it done as soon as possible. Right now it supports analysis of 1 AP but will support multiple AP selection after debugging. Does anyone have any netstumbler files that focus on sampling the area around a specific AP so I can test/debug?
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Postby Tuckie » Tue Mar 21, 2006 6:30 am

Thats pretty slick looking :cool:

Although I dont have any ns files for you, I hope it all turns out well, you definately seem on the right track.
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Postby Scruge » Tue Mar 21, 2006 1:30 pm

bitcorruption wrote:I mentioned about this in another thread, but thought it would be appropriate here as well. I am in the midst of creating a program I call Clearwave that uses interpolation to generate a kml file for Google Earth. I would bypass the whole Google Earth part, but I don't know of any free API's out there for C++ that allow for connections to satellite imagery servers. It is created in C++ and takes roughly a minute to interpolate the area of a very large parking lot on my machine. You may ask, "How is this different that what other people have?" See for yourself:

http://www.bitcorruption.com/clearwave1.jpg

http://www.bitcorruption.com/clearwave2.jpg

http://www.bitcorruption.com/alerus1.jpg

The program parses Netstumbler data and then creates an overlay for Google Earth so you can see the "actual" signal coverage. I'm trying hard to get it done as soon as possible. Right now it supports analysis of 1 AP but will support multiple AP selection after debugging. Does anyone have any netstumbler files that focus on sampling the area around a specific AP so I can test/debug?



Hey, you and I need to get together :)

I've got my ns1/kismet to kml parsing engine done... I'm now working on graphics... so far I've got Dots, boxes, crop circles, meanderings and chaos.

I'd like to bring order to the chaos. So what are you using to group signal data?
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Postby bitcorruption » Tue Mar 21, 2006 8:36 pm

I guess I didn't mention too much in my previous post as to what my program actually does. My program creates a jpeg image that is then used as an overlay in Google Earth. I specify the boundaries of the overlay image in the KML file and viola, you have a signal coverage map. I was thinking of also adding the feature of plotting the points in GE instead of doing overlays, but that might require a rather large KML file. It sounds like you are trying to do this and that might be where the chaos comes from. I haven't really experimented with all the shapes, dots, lines that GE offers.

Here's an actual screenshot from Google Earth:

http://www.bitcorruption.com/alerus2.jpg
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Postby Scruge » Wed Mar 22, 2006 5:26 am

bitcorruption wrote: It sounds like you are trying to do this and that might be where the chaos comes from. I haven't really experimented with all the shapes, dots, lines that GE offers.

Here's an actual screenshot from Google Earth:

http://www.bitcorruption.com/alerus2.jpg


The chaos I speak of is when I do a simple vector between the dots as can be seen in earlier screen shots in this thread.

GE doesn't provide much in the way of drawing tools, just vectors. extrusions and fills. All my graphic objects are drawn using latitude, longitude and alt.

It looks as though you have a good understanding of Bezier curves which allows you to group your signal level data with nice gentle curves. I can't come to grips with how to program one and get acceptable results. :)
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Postby kimbell » Tue May 16, 2006 10:37 am

[quote="Dutch"]
After it has churned away for a bit (1½]Did you have to start and stop kismet? Did you have multiple csv, gps, and xml files?

During my site survey I am having a problem combining the data between my perimeter scan and the offsite propagation scan. Is there a way to combine multiple site surveys when dealing with a large area and multiple csv, xml, and gps files?
:D
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Re: Visualizing site coverage with Google Earth (slow for di

Postby Zeroin » Mon Jul 15, 2013 10:14 pm

thanks for you share , i think you must cost much time to post this article , great article, it's very useful.


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