getting altitude other than GPS

[RickCo]

Is there another sensor measuring altitude (other than GPS)? If I want pretty accurate altitude data for a given still photo, what to do?

 

[sar104]

Is there another sensor measuring altitude (other than GPS)? If I want pretty accurate altitude data for a given still photo, what to do?

Use the takeoff elevation from Google Earth and then add the relative altitude, which is measured barometrically and included in the EXIF data.

 

[Meta4]

Is there another sensor measuring altitude (other than GPS)? If I want pretty accurate altitude data for a given still photo, what to do?

Your Phantom does not use GPS to measure altitude because GPS is quite inaccurate for altitude.
Instead, it uses a barometric sensor.
What's the reason for needing an accurate altitude for a photo?

 

[sar104]

Your Phantom does not use GPS to measure altitude because GPS is quite inaccurate for altitude.
Instead, it uses a barometric sensor.
What's the reason for needing an accurate altitude for a photo?

But it does use GPS for the default altitude field in the EXIF data.

 

[mrozburn]

Following - I am also interested in obtaining best accuracy in altitude/height AGL for photos. We are exploring whether or not we can use to measure heights of trees, etc.

 

[sar104]

Following - I am also interested in obtaining best accuracy in altitude/height AGL for photos. We are exploring whether or not we can use to measure heights of trees, etc.

Relative barometric altitude is going to be good to a few feet, at least over short time intervals.