Virtual Radar

A while back I wrote about setting up an ADS-B detector in the loft. There are six communications I think.

And this one makes seven.

What’s the point in having an ADS-B receiver if you aren’t going to use it when you are out of your house? So, I managed to set up some wizardry on parts of my home network and now I can see the display from outside the confines of my wireless network. I’ve done some port forwarding and other lovely stuff which is easy enough if you are adept at googling, which I am.

So, I now have a Virtual Radar Service for the area around my house that I can log in to from anywhere in the world. I did have to set up a Dynamic Domain Name Service for my modem as I am not lucky enough to have a fixed IP from my broadband supplier. My router even informs the DDNS service what its new IP is whenever it restarts and because this just seems to work it makes me happy.

I did have some minor issues with the radar service as it uses Google Maps to provide a nice background and because I was using this outside of my home network I needed an API key to make this work. That was reasonably easy to set up but then it turns out that Google recommend you secure the key to a particular site so that other people can’t use your key and steal your Maps data, which would then mean Google would charge me.

It took a little while to get the formatting of this securing correct but I think I finally managed it. I guess I’ll soon find out if Google send me a massive Google Maps API bill soon!

So, I can log in to my radar server from anywhere and view it on a desktop or mobile device. That way I can see what my home system sees. It doesn’t catch all planes because some won’t be broadcasting position, see the MLAT communication. Below is a picture of a browser with my radar server running.

Virtual Radar Server
Virtual Radar Server

If you want access I can allow it to you. Just let me know and I’ll arrange a login and password and also give you the URL.

Aerial

A short while ago my proper aerial turned up for the ADS-B system I have running in the loft. See this communication and this one also. This new aerial means I should have a better receiver based in the loft. It is currently picking up 47 aircraft flying within range and the Virtual Radar Server gives the following as a webpage output:

VRS3

There is a sidebar which connects to the web and gives me information about the selected aircraft and the others flying within range. This does not show all aircraft, only those with an ADS-B transponder. I also supply my data to a MLAT service for 360Radar.

The above photo shows the system in the loft. The white stick is a surround for the aerial. This connects to a dongle which connects to a Raspberry Pi3 and this, in turn, connects wirelessly to my home network.

I know you really want to know about the splat so here they are. Firstly one from before the new aerial.

Constriction
Constriction

Here’s the latest, all altitudes are in one colour.

splat4

The range is a bit better with two very odd pips into central France. The following is a colour one for you mammals out there.

splat5

The next thing is to try installing a purpose made ADS-B USB stick. After that I think I will stop. It appears to be one of those “who can get the best splat” things online and I’m not interested in taking part.

Splat

Further to my previous communication about my virtual radar set I now have been investigating what can be done. I’m waiting for a Raspberry Pi and then I will be able to move the aerial unit higher in the house.

In the mean time, here is a “splat” of what I can “see” using the original aerial and no RPi.

Radar Splat
Radar Splat

Here’s a version zoomed in a little. I’m thinking of taking the unit to the Lake District soon!

Radar Splat
Radar Splat

The different colours represent aircraft at different altitudes. The higher the plane the further away it can be seen.