Ardupilot2/libraries/AP_DDS/AP_DDS_Frames.h

#pragma once

static constexpr char WGS_84_FRAME_ID[] = "WGS-84";
// https://www.ros.org/reps/rep-0105.html#base-link
static constexpr char BASE_LINK_FRAME_ID[] = "base_link";
static constexpr char BASE_LINK_NED_FRAME_ID[] = "base_link_ned";
// https://www.ros.org/reps/rep-0105.html#map
static constexpr char MAP_FRAME[] = "map";