homing / directional proximity at 50' and less in choppy water
January 10, 2011
No longer a hot issue; GPS on open water is dead on accurate...
I need to make a bot seek a beacon. I think I am going to have to concede that GPS will get me within 20' reliably but I can't count on getting closer. For safety's sake, I want to double that but would consider things with a lower limit. Anyway, lets say I get within range and get a "blip" or whatever and can home in following it. What tech will do that?
It is likely to be in rough seas and might be dark.
Both units (the bot and the beacon) are microcontrollers with xBees talking to each other. the xBees are 900 Pro models and RSSI is useless at close range and there are other units on the same frequency nearby. Only the bot can pivot or move purposefully.