antenna tracking with rssi voltage - RC Groups
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Aug 30, 2009, 12:15 PM
Registered User
Discussion

antenna tracking with rssi voltage


has anyone thought about antenna tracking with the rssi voltage? has it been done? Ive searched the forums and found nothing. but couldn't i just make a circuit that uses servos for pan and tilt and points the antenna in the direction that gets the highest rssi voltage? or is that harder than it sounds?
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Aug 30, 2009, 01:44 PM
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QUIKSILVER's Avatar
Noob question here,

RSSI is where the signal is displayed or recorded in regards to how well in % the Rc link is?
Aug 30, 2009, 02:07 PM
Registered User
Highly innacurate I would have thought. Plus you'd be asking the antenna to continually move off course to see if the signal was any stronger elsewhere.

Ian.
Aug 30, 2009, 02:38 PM
Registered User
would not, it prob would use a voltage comparator to follow the highest voltage, which means follow the highest voltage once it gets below a certain point have it scan for it, so no one has done this?
Aug 30, 2009, 03:18 PM
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Blue Sky's Avatar
This is a well tread path on the RC-Cam forums.
http://www.rc-cam.com/forum/index.ph...20rssi__st__80
Aug 30, 2009, 03:23 PM
400' ..... NOT
Martin Y's Avatar
It can be done but IanJ is correct the antenna has to be sweeping all the time. It needs to sweep a 30 degree limit (relative to the plane) as to not totaly loose your signal. Using a track and hold compartor setup which will slow down (or shorten the sweep rate) of the antenna at the strongest signal. Good for long distance but within say 100 meters and at speed not so good.
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Aug 30, 2009, 03:47 PM
MelihK's Avatar
Quote:
Originally Posted by atari7202
has anyone thought about antenna tracking with the rssi voltage? has it been done? Ive searched the forums and found nothing. but couldn't i just make a circuit that uses servos for pan and tilt and points the antenna in the direction that gets the highest rssi voltage? or is that harder than it sounds?

Hi Atari,

Yes i'm working about this project already. If everything is ok, i will produce a device in 2 month. My friend developing search patterns for military rocket guidance. I will use some similar search algoritms for tracking.
If i finish somethings i can share here.
Feb 05, 2011, 01:33 PM
RC pilot by soul
Can anyone tell me how to check RSSI voltage on a Futaba reciever for example ?


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