L26-DR GGA message - how to calculate the height?

IoT Modules GNSS Module
1

Hi, I am performing some tests with the L26-DR module and in the GGA message I get this:

$GPGGA,093925.000,4026.91264,N,00334.89680,W,0,00,99.0,666.60,M,0.0,M,*78

so according to the L26-DR GNSS Protocol Specification v1.1 the altitude is 666.6 m above sea level and the geoidal separation is 0, could I calculate the height (respect to ground) with these values?

2

Hi，

Yes.
But please note that the data of this sentence should be missing, which can be judged by calculating the checksum.

Best Regards

3

ok, I get in altitude 613.40 and the geoidal separation is 51.7, how could I calculate height with these values?

4

Hi，

The height (respect to ground)=the altitude above sea level+the geoidal separation.

Best Regards