Ok so I really don’t know much about GPS…other then it’s red and square and my UAV’s need them. Today I ran across the u-blox ZED-F9P and don’t understand what the difference is between this and the Zubax.
When it comes to pure positioning performance, receivers based on the new chip u-Blox ZED-F9 may significantly outperform those based on u-Blox M8Q. Zubax GNSS 2 is based on the latter (M8Q).
One of the main factors here is that the new ZED-F9 module supports multiple frequency bands, which allows the receiver to directly assess the tropospheric delay (signals of different frequencies experience different latencies while propagating through the troposphere, allowing the receiver to deduce the total delay and improve the accuracy).