RTK GNSS as an accurate clock

Other
1

Hi all,

I need guidance selecting a Sparkfun product.

The project I’m trying to develop is a portable astronomical clock. It needs to display time in a number of standards and a reasonably accurate position (~ 1 m). It also needs to provide an electronic timestamp accurate to ~ 10^-9 s or better to record with observations output from an SDR device.

I’m thinking about a Raspberry Pi 5 hat with a RTK base GNSS reciever but very open to other solutions, it will need to process the GNSS signals and apply corrections quickly – it would be good if it could match or exceed the speed of a Raspberry Pi 5 (2.4 GHz) but I am expecting to have to correct for processing time. It needs to have a parallel interface.

Any advice would be much appreciated.

Very best regards,
Malcolmc.

2

This F9T looks like our best offering for ya
Here’s the hookup guide to get an overview of its operation