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-rw-r--r--src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c b/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c
index 9e2402447..534e8d110 100644
--- a/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c
+++ b/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c
@@ -377,10 +377,11 @@ PARAM_DEFINE_FLOAT(FW_LND_TLALT, 5.0f);
PARAM_DEFINE_FLOAT(FW_LND_HHDIST, 15.0f);
/**
- * Landing relative altitude threshold for range finder measurements
+ * Relative altitude threshold for range finder measurements for use during landing
*
- * range finder measurements will only be used below FW_LND_RFRALT estimated relative altitude (gobal_pos.alt - landing_waypoint.alt)
- * set to -1 to disable
+ * range finder measurements will only be used if the estimated relative altitude (gobal_pos.alt - landing_waypoint.alt) is < FW_LND_RFRALT
+ * set to < 0 to disable
+ * the correct value of this parameter depends on your range measuring device as well as on the terrain at the landing location
*
* @group L1 Control
*/