AirNav RadarBox Reception Plotting
Monday, June 25, 2007, 04:31 PM
Using the socket data from RadarBox 2007 I have created a application which plots of the reception of aircraft from your antenna. Based on the idea of Polar Diagram Plotter (by Andy (Threemiles) for SBS-1.
Anyhow as you can imagine there is a bit of maths involved in the app such as determining the bearing from your home location. Unfortunately there a few bugs at the moment but getting there.
Reception of my location
The app also creates a outline file which can be loaded into Radar Box as well. Hopefully if I can iron out the maths bug should have a beta to release to anyone with a RadarBox by the weekend :)
[ add comment ] | permalink |
( 3 / 787 )ADS-B Antenna
Wednesday, June 6, 2007, 03:28 PM
As mentioned in my last post I was able to get the data out of ANRB. I have decided my first add on would look at two things:
- Distance from Antenna
- Lowest Altitude received
Distance was being done so I could work out how good my line of sight was with the indoor antenna and how line of sight really affects transmissions. Distance of gps coordinates shown below:
sqrt(x * x + y * y)
where x = 69.1 * (lat2 - lat1)
and y = 69.1 * (lon2 - lon1) * cos(lat1/57.3)
Altitude was being done so I could check to see whether I was getting ground signals and whether it was only from specific aircraft on certain days.
Furthermore I linked the above in with google maps. The google API was very helpful and the page below has been produced which I will update every day or so with new entries for the moment.
RadarBox Transmissions
[ add comment ] | permalink |
( 3 / 726 )ANRB Output
Tuesday, June 5, 2007, 02:54 PM
Been working on a java app to connect to the ANRB output to produce some reports on the traffic picked up by ADS-B. After finally connecting to the right port had trouble getting the data as it didn't follow the normal java spec of sending with a new line.
Instead my code had to read each char and work backwards. Anyhow finally getting the following below:
$PTA,20070605125824,4CA2C0,RYR3676,6925,,,0,,51.7968,-0.6261,,,,,,
non,date,hex code, flight no, height, speed, bearing, fpm,?,lat, long,
Using the above data, should be able to make some nice reports. Standby for some apps :)
[ add comment ] | permalink |
( 2.9 / 636 )BAA WebTrak radar online
Tuesday, May 29, 2007, 03:51 PM
BAA has introduced web track which is similar to airports in America. However this is mainly been based on associated noise from aircraft. So far Heathrow, Gatwick and Stansted have been included.
The usual delay of 24-48 Hours however still a nice feature. However the radar is restricted to approaches and takeoffs and does not give hold data for Heathrow yet however they have mentioned they will be expanding the map.
Heathrow Radar
Set the time to 14:00-14:05 on the 29th May and watch ANZ39 (Air New Zealand)
[ add comment ] | permalink |
( 3 / 566 )BBC HD Trials
Sunday, May 27, 2007, 09:02 PM
Using my Hauppauge freeview tuner I can just pick up the signal from Crystal Palace which is trialing BBC HD. Unfortunately it cannot be run on the fly at the moment due to codecs. However I could record and play the transmission however it was pixelated as the signal quality was below 25%. At present the signal is being kept as low as possible and the trial is taking place in croydon.
Anyone else who lives close by to Crystal Palace can try on the following frequencies:
- UHF 31 (554 MHz) - BBC HD Trial Multiplex
- UHF 27 (522 MHz) - ITV, Channel 4 and Five HD Trial Multiplex
More details at:
http://en.wikipedia.org/wiki/Crystal_Palace_transmitting_station
TS Readler Lite will enable you to manually tune to the frequency. Use VLC to play the recorder-ed file.
Picture
[ add comment ] | permalink |
( 3 / 488 )Back Next
