Mission planner terrain data

Hello today copter is able to follow terrain through terrain data injected by mission planner.

There is possible to create our own terrain data? With more details than srtm? Maybe using qgis?

Does anybody could help me to do that?

The issue names no files, tests, or entry points. First clarify whether Mission Planner should create or import custom terrain data, and how QGIS or SRTM would fit; a definition of the expected workflow and output is needed before completion can be judged.

Written by the indexing model from the issue text.