AirCraft Location Doesn't Line Up?

Hello Everyone,
I am a newbie and I certainly hope I don't annoy anyone with this thread

I have obviously noticed the change in maps used and I also totally understand the reason behind it (I kind of like the more detailed maps now) but I feel the true location of the aircraft is being shown in the wrong place if that makes sense? I do know you have to wait for the locations to update but it wasn't this as I'm used to that.

I discovered this the other night when the Police helicopter was about which I could visually see but the location on the map seemed way off. It almost seems like the location shown for the aircraft is a bit North of where it really is?

I do really hope this is some sort of little glitch that can be worked on (fingers crossed) as the ADSB Exchange website is by far the best site for seeing what's happening.

Other than the above issue everything else is AMAZING and has been for a long time. Keep up the brilliant work everyone involved it's very much appreciated.

An APP would be the icing on the cake of course

 

Thank you for the reply it's much appreciated. I will try and remember this for next time. I really wish I had the equipment to help the site out.

 

Just out of curiosity what kind of stuff do I need? I live in Cheltenham UK so improving coverage in these parts would be great.

 

I'm currently just someone who checks the site out but I wouldn't mind having the equipment to help make the tracking better. I've not got any set up so far but I am curious what I would need.

A little extra for the original post I have an RAF Jet go over my house tonight and it was literally passing over my house but the website said it was still miles back behind me and the site said MLAT: No

 

There is a really excellent "app" I use on my iPhone called OpenADSB. The data is fed from ADSB Exchange. It's well designed and highly functional.

If multi-lateration (MLAT) was used to establish the fix, 4 RX stations are needed, as MDA said. In general, more feeders improve coverage, redundancy and (often) accuracy. Want to make ADSBX better? Build a feeder! It's not difficult or expensive.

 

I've just had an A400 going over multiple times (happens a lot) and thought I would check this site against another to see if they line up and they didn't sadly. As the A400 went over my house the adsbexchange site was saying it wasn't near my house yet whereas the other website was showing the location properly.

I grabbed a couple of screen snips side by side to show you. On the last one you can see the adsbexchange site shows two planes heading towards each other but the other site shows them already passed. Also these says MLAT: No

 

I assume that's Airnav Radarbox? I know a secret about when you compare ADSBx data to their data.

TLDR; Global Radar View is never going to be real time. It's always going to be lagging because VRS is not efficient. If someone connects to ADSBx data outside the public available endpoints there is significantly less latency and it is nearly real-time.

Processing delay. To display on the Global Radar Map using VRS.

We have to take incoming data, process and merge it, then send it another server which relays it to Global Radar View server cluster (30 servers).

Public map display is never going to be real-time here because we simply don't have the resources.

We serve 700 TB of data a month just using clouldflare caching, and that's conservative.

Realistically ADSBx data usage well over 1.5 PB a month. Yes, that's PetaByte.

You can't relay on FR24 map, because FR24 projects a fake track to make the planes appear to be real time.


OpenBSD is a great app. The dev contacted us when he was building it and we setup a special end point for him to use.

http://openadsbapp.com/

 

Hi, it is indeed AirNav RadarBox. I am only mentioning these bit because up until very recently the ADS-B Exchange has always been on point for me when visually viewing an aircraft and checking what it was with the site but now it's behind.

I am a total newbie with all this and most of it is over my head but I've always liked being able to check out what's going over my house as we get lots of military stuff go over and I'm not a huge distance from Fairford which has a big Air Show each year so it's nice to see what's coming over.

 

Report bugs to http://www.virtualradarserver.co.uk/

We went from 2.4.0 to 2.4.2

Mono 4.6.2
Mono 5.14

ADSBx is friends with Airnav, so if we had laggy data, you can guess what they would have.

 

Do you guys do kits at all so it's as straightforward as possible to get one install and feed in? I am such a newbie I have no clue about any of it so setting the stuff up would be daunting.

 

It's really easy.

Download the image zip
Unzip it
Burn img file to SD with etcher.io
Edit a text file
Assemble Pi parts
Plug in and it just works

Sub 1% have issues and it's 99.999% user error.

 

Correct sir. More feeds = better data for everyone!

 

Hi Chris,

ModMyPi sells a ready to use bundle in the UK. Got mine 2 weeks ago.
Connect everything, switch on, install ADSBx feeder as explained and it works.

https://www.modmypi.com/raspberry-p...are-aircraft-tracking-kit-inc.-raspberry-pi-3

I'm not in a favourable location and I still get about 1800 planes and feed 88,000 positions to ADSBx a day.

Go for it!

 

Chris,
I urge you to have a go, I'm in Wiltshire and we need more contributors in the South part of the UK to get better mlat coverage.
There are always plenty of people around on this and other forums to help should you get stuck

Paul