Can you please change this to have the ground distance, instead of line of sight distance?

[sglindme]

I don't really know when LOS distance would be preferred over the actual arc distance along the surface. Why was this method picked?

Can you add another line for "Distance along the surface of the Earth?"

[chconnor]

Just wanted to bump this in case the author had any time to work on it; it would be nice to have distance-along-the-surface instead of line-of-sight-to-visible-base-of-the-target as an option. Thanks for the app!