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help
- Ben Montgomery
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Re: help
The pictures look like a mix of Google Earth, PlanePlotter and FlightSim - I'd be a bit cautious with that. 

Re: help
This CD isn't available online for free,it just seems to be a load of links to different sites that are free (and will be mostly civil anyway).lee19822 wrote:ok thanks where would i find it online ?
What do others think,have I read the description correctly ?
Re: help
The description in eBay for the item is very clear that it's not a program you are buying, but information of websites that offer the services (mainly for free, some you can pay for).
My flickr account - http://www.flickr.com/matthewhearne/
Re: help
That is indeed true, but there are probably a lot of people who maybe won't know about some of the sites / info that he can supply, or even know how to find that info out.RichC wrote:Lee,
This chap is trying to sell stuff which is provided for free on the internet
My flickr account - http://www.flickr.com/matthewhearne/
Re: help
By the look of the screenshots this is one of them (civilian) :- http://casper.frontier.nl/" onclick="window.open(this.href);return false;lee19822 wrote:where would i find sites with this info ?
Re: help
http://www.planefinder.net/" onclick="window.open(this.href);return false; - almost instant
http://www.radarvirtuel.com/" onclick="window.open(this.href);return false; - allow a minute for it to load
http://casper.frontier.nl/" onclick="window.open(this.href);return false; - again may have to wait a few moments
or my fav - Planeplotter - just Google it.
Hope you get sorted.
http://www.radarvirtuel.com/" onclick="window.open(this.href);return false; - allow a minute for it to load
http://casper.frontier.nl/" onclick="window.open(this.href);return false; - again may have to wait a few moments
or my fav - Planeplotter - just Google it.
Hope you get sorted.

Re: help
Probably the best post ever on FC,many thanks.GOOSE wrote:http://www.planefinder.net/ - almost instant
http://www.radarvirtuel.com/" onclick="window.open(this.href);return false; - allow a minute for it to load
http://casper.frontier.nl/" onclick="window.open(this.href);return false; - again may have to wait a few moments
or my fav - Planeplotter - just Google it.
Hope you get sorted.
Re: help
Almost always civilian unless the military aircraft is "squitting" it's location (ie broadcasting a clear Mode-S code with location data enabled)
Planeplotter has a feature which allows the presumed position of Military aircraft to show on screen. It's called Multilateration and requires at least 3 (I think) people to be tracking it. The system then triangulates to show presumed location.
Think that's about right anyway, hope it helps.
Planeplotter has a feature which allows the presumed position of Military aircraft to show on screen. It's called Multilateration and requires at least 3 (I think) people to be tracking it. The system then triangulates to show presumed location.
Think that's about right anyway, hope it helps.

Re: help
a triangle and triangulation are completely different.
a triangle is a geometric shape having 3 angles bounded within and 3 angles externally.
triangulation is a process which takes 3 bearings from north to a point of transmission, for this you need direction finding equipment in order to establish the bearing to the transmission source from the receiver.
this bearing can then be plotted on a map, using 2 or more receivers located at different places allows the bearings to be plotted and where the lines cross is the point of transmission.
Multilateration does not use triangulation as this would require direction finding equipment at each receiver, which sbs and airnav does not do.
Multilateration uses time differences from a number of receivers of a certain transmitter against a master clock to plot a number of parabolic curves based on these time differences, it then calcualates the most probable position based on the intersection of said parabolic curves.
a triangle is a geometric shape having 3 angles bounded within and 3 angles externally.
triangulation is a process which takes 3 bearings from north to a point of transmission, for this you need direction finding equipment in order to establish the bearing to the transmission source from the receiver.
this bearing can then be plotted on a map, using 2 or more receivers located at different places allows the bearings to be plotted and where the lines cross is the point of transmission.
Multilateration does not use triangulation as this would require direction finding equipment at each receiver, which sbs and airnav does not do.
Multilateration uses time differences from a number of receivers of a certain transmitter against a master clock to plot a number of parabolic curves based on these time differences, it then calcualates the most probable position based on the intersection of said parabolic curves.
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