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Old Aug 30, 2009, 12:15 PM
Registered User
orlando florida
Joined May 2009
74 Posts
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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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Old Aug 30, 2009, 01:44 PM
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QUIKSILVER's Avatar
UK
Joined Sep 2002
1,374 Posts
Noob question here,

RSSI is where the signal is displayed or recorded in regards to how well in % the Rc link is?
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Old Aug 30, 2009, 02:07 PM
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Aberdeen, Scotland, UK
Joined Dec 2007
607 Posts
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.
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Old Aug 30, 2009, 02:38 PM
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orlando florida
Joined May 2009
74 Posts
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?
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Old Aug 30, 2009, 03:18 PM
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Eureka, CA
Joined Oct 2002
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This is a well tread path on the RC-Cam forums.
http://www.rc-cam.com/forum/index.ph...20rssi__st__80
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Old Aug 30, 2009, 03:23 PM
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Canada, ON, Milton
Joined Jan 2009
3,836 Posts
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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Old Aug 30, 2009, 03:47 PM
MelihK's Avatar
United Kingdom, England, Canterbury
Joined May 2008
1,366 Posts
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.
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Old Aug 30, 2009, 09:15 PM
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Melbourne, Australia
Joined Jan 2008
1,049 Posts
http://video.aol.com/video-detail/mo...nna/1014107601
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Old Feb 05, 2011, 01:33 PM
RC pilot by soul
Israel
Joined Apr 2005
2,517 Posts
Can anyone tell me how to check RSSI voltage on a Futaba reciever for example ?
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