Trimble IonoGuard

Curious about Trimble IonoGuard, will they be more accurate than other GPS when signal quality is poor?
How does AgOpen compare?

It’s a GPS fix I guess, not a software thing. According to their paper, it should be better. Who knows for real, until they see it in action.

Isn’t the rtk base built to fix these error, isn’t it its purpose. Any offset the base reads its calculated and fixed on rover side?