What are some of the terms to look for when buying an RTK? It's a good idea!

Currently, my domestic GPS manufacturer's RTK publicity color pages, always mention some advanced technology, but almost no explanation! Resulting in the majority of consumers do not know the meaning of these technologies as well as the use of a simple explanation here:

1, micro-pulse correlation technology (PAC)

PAC technology to make the GPS product performance is greatly improved, can be in a harsh environment, better work, the technology to make the product is smaller, lower power consumption (2.3W), higher accuracy (DGPS 0.45M)

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2. Synchronized Position Attitude Navigation (SPAN)

SPAN technology combines GPS and inertial measurement functions, and is capable of outputting high-precision position and attitude data without interruption. Utilizing RT-2 correction numbers, SPAN technology can not only achieve centimeter-level positioning accuracy, but also provide accurate velocity, acceleration and rotation measurements and other dynamic application data, and its inertial technology can still provide uninterrupted positional output when GPS signals are unreliable.

3, Pinwheel technology (Pinwheel)

Pinwheel technology greatly enhances the GPS antenna reception, so that the L1 and L2 phase center deviation of less than 1mm, the physical center and phase center deviation of less than 1mm, idealized gain design reduces the electromagnetic wave interference and multi-path error.

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