3 ms·
You can defeat jamming in a fairly unsophisticated way by using an antenna that can only receive signals from a specific direction (i.e straight up), while ever
by oceanplexian 5y ago
You can defeat jamming in a fairly unsophisticated way by using an antenna that can only receive signals from a specific direction (i.e straight up), while everything else is filtered out. If the jammer is to the side or below you it wouldn’t do much good. The problem is for GPS to work you need to be able to see a few of the sats and some will be closer to the horizon.
- topspin 5y ago"antenna that can only receive signals from a specific direction" That's what "high gain" means; the main lobe is strongly focused in some direction. Actively tracking multiple moving satellites makes this approach mostly unworkable.
- Dylan16807 5y agoYou were specifically talking about "very high gain" to track individual satellites. Having a 60-120 degree cone pointed straight up is a different category of solution entirely.