Integrated uBlox NEO M8T GNSS receiver

12 Jan 2016

Allegro 2 Geo models now come with the integrated U-Blox NEO M8T receiver, which replaces the previous NVS NV08C receiver. This receiver offers raw UBX data output for potential further differential correction in real-time (such as over an Internet connection) or post-processed using specific software applications. Such corrections can provide improved location positioning accuracy. For further information, see the following web page.

Raw GNSS data output for further differential correction

It is recommended (though not required) that this receiver be used with an external antenna which is connected via the optional antenna connector/pack, such as the Tallysman TW2710 with SMA connector that we offer.

Accuracy comparison between the standard U-Blox Neo M8N and the optional M8T receivers is as follows.

• Real time SBAS and autonomous accuracy – identical
• M8T is capable of post-processing. During testing, M8T post-processing with internal antenna on Archer 2 has been 2 meters down to sub-meter, roughly 60 ~ 90 cm. Use of an external antenna has shown post-processing down to a few decimeters. It is difficult to quantify accurately, as there are many factors to consider; static vs kinematic, baseline length, observable conditions, etc.