Have you looked at the blitzortung.org system? There may be some ideas to glean from that
On July 28, 2016 6:12:54 PM CDT, Jerome Blaha <[email protected]> wrote: >Hi Guys, > >This is a little outside of time-nuts scope, but not by much. I'm >interested in finding the time between two rising edges above a set >threshold with preferably nS or high ps timing accuracy. Can this be >simply done with a few programmed Microchip PICs or with a good short >term OCXO clock? The issue I see is that a 10Mhz timing reference with >1 cycle difference in time yields 100ns resolution, which is far too >large, so maybe a PIC can solve this. > >This weekend project would be a multi-element antenna array, each with >a super-fast response log peak power detector fed into several PICs for >time of arrival. Whenever a nearby high energy RF pulse is detected, >the time of arrival between two antenna elements and hence the >direction toward the TX could be roughly computed. Some typical log >peak detectors have an 8ns input pulse response time, so I'm hoping >that rise times are similar between multiple detectors, negating the >delayed response. > >There are time of arrival/AoA systems out there with synthetic doppler, >phased arrays, correlative interferometers, and phase comparators, but >it would be interesting to accomplish super wideband AoA timing on two >rising pulses with relatively cheap parts. > >Thanks, > >-Jerome >_______________________________________________ >time-nuts mailing list -- [email protected] >To unsubscribe, go to >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there. -- Sent from my Moto-X wireless tracker while I do other things. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
