Nice data! I think you're on the right track. The data surely shows a correlation between tide height and outages! Multipath can definitely be a problem over water.
What polarization are you using for the antennas? Countermeasures can include (1) using horizontal polarization instead of vertical polarization (vertically polarized waves flip and change phase by 180 degrees when reflected from a conductor, horizontally polarized waves don't change phase when reflected), and (2) positioning your antennas so the area where signal reflects off the water is over ground instead (this is harder to do of course, because your choice of antennas may be limited), (3) positioning at least one antenna so that the path to the region where signals are bouncing is blocked (for example, if one antenna is on top of a building, place the antenna towards the middle or back side of the roof where the bounce-path is blocked instead of at the edge of the building where the bounce-path is not blocked). I hope this helps! Greg On Tue, 2003-10-28 at 00:25, Andy Barlak wrote: > > http://www.island.net/~andyb/ > > Please comment on my page describing wireless outages over an 8 km > link. What techniques could I use to overcome multipath interference? > Diversity dishes? > > ------------------------------------------------------------------------------- > Andy Barlak > > On my desk I have a work station. Trains stop at train stations. > > > -- > general wireless list, a bawug thing <http://www.bawug.org/> > [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless
