I would like to know what types of GNSS antennas are on the images below (patch etc.) and also which one is better from the two (if any). They are being sold as "high precision" survey grade antennas.
Photos of antenna internals were send to me by the sellers. Antenna #2 looks like a stacked patch type but I can not recognize type for antenna #1.
Datasheet #2 (dimensions include antenna housing)