Direction using radio
Direction using radio
(OP)
This is similar to my ranging using radio post. Since I see that that is not a feasable option what about an object that emits a signal that is picked up by a reciever. My goal is to know the direction to the signal and using 2 or more recievers to triangulate.
I was thinking maybe the reciever could rotate to get 360 deg. coverage and have an encoder so that when the reciever recieves a signal it knows what direction it came from.
Non-rotating would be better since moving parts break. Any suggestions are welcome.
Thank you for your time,
T
I was thinking maybe the reciever could rotate to get 360 deg. coverage and have an encoder so that when the reciever recieves a signal it knows what direction it came from.
Non-rotating would be better since moving parts break. Any suggestions are welcome.
Thank you for your time,
T





RE: Direction using radio
RE: Direction using radio
T
RE: Direction using radio
RE: Direction using radio
RE: Direction using radio
You should be looking at an optical approach, possibly using arrays of emitters located on the walls or ceiling and an imaging detector with VERY large field of view.
TTFN
RE: Direction using radio
RE: Direction using radio
http://w1.859.telia.com/~u85920178/
Click on "Receiver Circuits" near the top of the frame, then click on "FM DF system".
There is also a tracking antenna (fox hunting type hand-held phased vertical dipoles)
Under "Antenna Projects" click on "VHF Direction ant".
Rick
RE: Direction using radio
http://members.aol.com/homingin/
Also, "steering" a radiated signal by controlling the phase of the signal as it is applied to each antenna is easy in concept a pain in practice, though if you get good at it the US Military wants you (or the former Hughes Corporation - the military supplier, not the rock band!) as they have that and it is called phased array radar and is installed on all the Aegis Class Destroyers (http://www.russell.navy.mil/home.htm)
As for internal reflections within the hangar, a good RDF system will still give a stronger signal towards the original source. You may have to move about a bit or, if this is not practical, install several phased antenna arrays feeding into the one receiver and triangulate ( or at least see if they all point in the same general direction).
Good luck,
Jim
RE: Direction using radio
In answer to a past post where there was a need to track items in a hanger-sized area - I think this was you. You've started several posts concerning ranging and tracking over a short distance.
I just stumbled across a UWB tracking item meant to locate and track assets. Check out the following link and other info at the following site.
http://www.multispectral.com/pdf/PAL.pdf
RE: Direction using radio
That may be exactly what I need. Brilliant.
Now I just need to get the robot zombies to come to life!
T