Hi, I install LidarLite v3 on my copter.
I saw that EK2_ALT_SOURCE = RangeFinder only use indoor with flat on http://ardupilot.org/copter/docs/common-apm-navigation-extended-kalman-filter-overview.html?highlight=ek2_alt_source.
Why does EK2_ALT_SOURCE = RangeFinder only use indoor with flat?
Can I use outdoor like park, mountain??