What is Hs in GPS data?

phirephoto · May 16, 2015

So looking at the GPS data file stored on the SD card:
Hb is altitude in meters, but what is Hs? I can't see any corolation to flying and what it is

Thanks.

snerd · May 16, 2015

Horizontal speed? Just guessing since mine isn't here yet.

phirephoto · May 16, 2015

snerd said:
Horizontal speed? Just guessing since mine isn't here yet.

That would sound obvious, but I'm seeing times where I'm ascending and it doesn't move. (but altitude IS changing - according to Hb.)

loganboyd · May 16, 2015

Are you going straight up when that happens?

phirephoto · May 16, 2015

loganboyd said:
Are you going straight up when that happens?

Yep. There's times when it does appear that it's vertical speed, and times when it's not. I can't see any corolation between movement and the numbers.

Aramis · May 16, 2015

This is the VPS sensor height. Strange values depending on VPS is ON or OFF.
Hb = barometric height

phirephoto · May 16, 2015

So the VPS only is effective for a few feet, right? So maybe that's why I only see a distance of like 4-5 feet from it, then 0?

Aramis · May 16, 2015

I wont say the value is somewhat random when the quad is above VPS range (from 0 to 3 m) but it seems to be.
I'm flying only outside for the moment, I set VPS to OFF. Usually, when the quad is above 70m height, having an horizontal speed or not, I always have 25,5 for Hs. And sometimes I have this value above 40 or 50m.
Horizontal speed is only available in the flight log, not in the subtitle file.