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I would like to understand what GNSS is used for? Can I download it from the website and use it for my work? I am not familiar with it. Does it come with the GPS?

Does it come with horizontal accuracy that can I use to verified the points on the surface?

If GNSS is not the case, then what other option do I have for the data that I need?

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    One question per Question, please. – Vince Apr 24 '20 at 1:21
  • @Vince Did I give too many questions on m part ? – PROBERT Apr 24 '20 at 13:12
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GNSS stands for Global Navigation Satellite System, and is the standard generic term for satellite navigation systems that provide autonomous geo-spatial positioning with global coverage. This term includes e.g. the GPS, GLONASS, Galileo, Beidou and other regional systems. GNSS is a term used worldwide The advantage to having access to multiple satellites is accuracy, redundancy and availability at all time.

https://www.semiconductorstore.com/blog/2015/What-is-the-Difference-Between-GNSS-and-GPS/1550

To use GNSS you need a device that can support all the GNSS frequencies and software to capture your data for processing the signals.

An example (there are others) is a device called bad elf pro https://bad-elf.com/pages/be-gps-3300-detail

Stationary high precision GNSS as low as 1m out of the box with PPP in regions with SBAS coverage.

(*disclaimer have used this device in the field with good results in the sub $500 budget)

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