aircraft – Page 3 – Fooyah

August 3 2016October 17 2017

Sledgehammer

This is an update on the ADS-B device. I have written about this in the previous two communications, here and here. So, on Tuesday 2nd August the Raspberry Pi arrived. Since then I have been setting it all up so the receiver is no longer dependent on the PC being on.

The first thing was to install the correct OS on the Pi. The picture shows it in initial phase with monitor, ethernet, keyboard and mouse all connected. Once the OS was installed I had to tell it to not load the GUI and just run a command line. Then, I got it connected to the network and pretty much removed all the cables apart from power.

I can connect to the Pi using SSH and run script from the command line. Next phase was to load the USB stick drivers and software. This was reasonable. Next up was the ADS-B reading software, installing and getting it running seemed easy enough and then I had to adjust some code to make sure this service starts up from boot. Next software to load was the MLAT server program, this was easy enough although initially I couldn’t quite find the correct code to check it was running.

Then, the whole set up was tested in the dining room window.

Today has been the task of moving the unit to the loft. I didn’t have any power sockets up there so one had to be installed and that took the time! Once that was done the system just needed to be secured onto the main beam in the loft. The important thing is to keep the length of the cable from aerial to dongle as short as possible, this increases the signal going into the Pi. The loft set up has been tested and it is running fine.

I have access to the Pi either via the PC using a program called PuTTY or the iPhone using an SSH connection. I can shut down the Pi remotely and monitor the internal temperature of the device. It is running at a range of 50-60 Celsius. Using a Pi to run this software is a bit like taking a sledgehammer to a walnut. But, it is independent and runs remotely. I am happy this procedure was reasonably straight forward!

The next stage is to get a more specialist aerial and maybe a more specific USB Dongle. However, this is one of those things where the amount of money you spend can be unlimited. You know, I could just install a radar up in the loft. However, here is the current splat for the range of the aircraft from my ADS-B receiver.

Now that I’ve been reading a bit more about this type of thing I can explain a little more. ADS-B is broadcast by many aircraft and they send this on 1090MHz. These are the signals I receive in the loft and can see on my Virtual Radar Server software. I also send these signals over the internet to a new “radar” website. The ADS-B signals contain bits of information about position and heading, these are sent to a server which can determine positions of other aircraft by using time differences between signals arriving, this is called MultiLateration or MLAT. My Pi is part of this network allowing Radar360 to “see” more aircraft than just ADS-B alone.

July 29 2016May 7 2021

ADS-B

I’m interested in aircraft. I don’t know why it started but it’s pretty much always been there. I grew up near Stansted airport and I can remember seeing the Space Shuttle visit in the early 80s, I saw the 747 and Shuttle circle around from the primary school playing field. When I studied art at secondary school every picture of mine contained an aircraft much to my teacher’s annoyance.

Nowadays it’s easy to see aircraft on the web. I have the planefinder app installed on my phone and often tweet when I spot an A380. I only really tweet the A380 as it’s massive and extremely beautiful.

Spotted! 9M-MNF (MH3) using @planefinder https://t.co/eOkZ5aOMBe pic.twitter.com/3IQx0fcfaE

— Ian Parish (@iparish) July 12, 2016

My aircraft thing also meant I travelled to Stansted to see Air Force One take off a few months ago.

I wanted to find a way to see what military aircraft are doing in the skies and I found a website called 360Radar who have this information. The site isn’t open to public yet and I emailed to see if I could get a test account. They said yes.

I like the site. I like the filters and information that I can see. This site relies on people sharing their MLAT data with them and they will offer a free account if you share data. They have a great comprehensive guide to setting up a system that is currently here. I ordered a small aerial and it arrived today. Within about thirty minutes of getting to the computer I was running the data server and sending information to the network.

I have a USB aerial picking up 1090MHz signals from aircraft. I then have a small program running to collate that data and form it into useful data.

Screen Grab of MLAT — Screen Grab of ADS-B Signals

You can see that I am picking up an aircraft over Cherbourg which I think is quite impressive. All of my aircraft are south of my position because my aerial is placed in a south window. I will look into moving the aerial to a more central, higher position in the house so that I can pick up aircraft all over!

Here’s another screen grab of the output from my aerial.

How it works

Many aircraft broadcast position information on 1090 MHz. This information comes from the aircraft’s navigation system but does not require the pilot to be involved in the operation of the system. The position of the aircraft is determined by GPS. This output information is called Automatic Dependent Surveillance Broadcast. My little aerial picks this up and reads it. My computer then sends this information to a website which aggregates the information.

For aircraft that don’t output the ADS-B signal their position and direction can be known using multilateration [MLAT]. This involves two or more base stations and measuring the time difference between each station receiving a signal. It’s very clever!

July 22 2014July 22 2014

Rochester

Here’s a few photos taken by son #1 while we were walking around Rochester Airport. I think he has a pretty good “eye” for the shot.

October 5 2013

Sexy Stuff

I don’t follow many people on Twitter. It’s a conscious decision that means I actually have the time to read tweets by my friends (see here). I have, however, recently added a couple of new people/things to follow.

@Scienceporn
@CombinedHistory
@MilitaryPorn

I find these generally fascinating and I feel that they actually add something to my life. I’m a complete science whore and so @Scienceporn is awesome. I am unsure about some of the sources and tweets, but the replies to @scienceporn normally ask for references and so it’s a self-sorting system, much like science.

@Combinedhistory is a really clever concept of matching famous pictures with modern backdrops and fusing the two together to give a brilliant time-displacement view of scenes.

@MilitaryPorn is awesome. I’ve always been a fan of military aircraft and in my teenage years I went to lots of airshows. Most of the aircraft that I find gorgeous aren’t really flying anymore and so this tweeter gives me a chance to drool over pictures of planes I’ve always enjoyed. Here’s a selection:

July 3 2013July 3 2013

USA Pictures

Finally got some prints from my DC trip at Easter. Had my panoramas printed, only the lovely things obviously.
Here’re the X-15 and SR-71 in the dining room:

Here’s the orbiter Discovery next to my Cylon guardian:

And finally the Capitol sitting on the other side of my Cylon:

April 14 2013April 14 2013

They Are So Mine

Here’re my boys looking at Rochester Airfield. They loved waking around and seeing the planes. We were going to go on a river trip but all sailings were cancelled because the river was flooded!

April 11 2013June 2 2019

DC Day Six

My last day in Washington DC! I knew I’d be leaving for the airport at around 19:30 so I had all day and plenty more to see. Another sunny day in DC and slightly warmer than the last week or so.
Got up, had coffee and then prepared for another run. I hadn’t seen the World War II memorial so far and that was my destination for today.

Create Maps or search from 80 million at MapMyRun

On the run I saw a coast guard helo. My helicopter total for the trip was as follows:

Black Hawk
Marine One
Coastguard
Park Service UH-1

Back to Georgetown and time to get ready for a busy day. I had lunch organised at midday and so I wandered in to town at about 11. I was planning to get the metro from Foggy Bottom and go two stops to McPherson Square but I had plenty of time and so kept going on foot. I got to 14th and Eye just on time and walked a little further to The Hamilton bar for lunch.

After a Hamilton burger for lunch I walked towards the Newseum. I hadn’t quite decided whether to go there or the National Museum of American History. I happened to wander past the FBI Headquarters building and didn’t blag my way in to that place. I figured if I wanted to see inside I could try and get arrested somewhere, although that would probably not be worth the effort. I like my body cavities as they are!
I saw a sign indicating Ford’s Theatre and so I walked to see that. There were many many school children waiting outside. I understand, it’s the place of assassination.
I decided that the Newseum would wait and so I walked to the Museum of American History. Half of the museum was shut for the year to be refurbished which was a shame. I saw the original flag that inspired the lyrics to the Star Spangled Banner and some pieces of American History. Again, much like the Natural History Museum, I have a feeling that we do museums far better than the Americans and it all seemed a little “not quite the nation’s museum” even though it was.
I headed for the National Aquarium close to the White House and waited in line to be searched and pay my entry fee of USD10. I’m glad it was only a small amount of money as the Aquarium was pretty rubbish. The London Aquarium is far superior. Apparently there is a branch of this aquarium in Baltimore and I would hope that one is much better. Maybe another trip.
It was time to start wandering back to GT. I was feeling a touch peckish and thirsty and I wanted more coffee so I found a bar on M street in GT. Mr Smith’s saloon fed me coffee, buffalo chicken sandwich and a Goose Island beer.

Much refreshed it was now cupcake time. There are two shops in Georgetown that feature in their own TV shows on some small time channels. I though it might be worth buying a cake from there however, the queue was around the block and I don’t like cupcakes enough to wait that long. Instead I had a muffin and coffee from Saxbys.
Packing my suitcase in Winfield Lane was methodical and calming and then I played some guitar hero Metallica while I waited for Rich to come home from work. The journey to the airport was uneventful and the flight home was boring. I tried to sleep but don’t think I managed it.

It was great to see my boys and spend the next few days with them in the UK.

October 30 2012

Quiet Skies

Here’s the skies over southern Scotland earlier today:

And here’s the view a few moments ago (30 Oct 17:30):

Much busier this evening. Spending a while in Cowdenbeath. Flying home soon. Sons loved the flight up.

October 8 2012October 8 2012

Seeking Aircraft

Here’s #1 running to the fence to see the aircraft at Headcorn Airfield. We watched a helicopter take off and skydivers safely return to the home planet. It was most pleasant.

I really like the sky in this picture. It’s a good contrast to the ground.