landdetector: adjust time to 3 stage detection

src/modules/land_detector/LandDetector.h

@@ -150,10 +150,10 @@ protected:
 	static constexpr uint64_t LAND_DETECTOR_TRIGGER_TIME_US = 500000;
 
 	/** Time in us that almost landing conditions have to hold before triggering almost landed . */
-	static constexpr uint64_t MAYBE_LAND_DETECTOR_TRIGGER_TIME_US = 1000000;
+	static constexpr uint64_t MAYBE_LAND_DETECTOR_TRIGGER_TIME_US = 250000;
 
 	/** Time in us that ground contact condition have to hold before triggering contact ground */
-	static constexpr uint64_t GROUND_CONTACT_TRIGGER_TIME_US = 1000000;
+	static constexpr uint64_t GROUND_CONTACT_TRIGGER_TIME_US = 350000;
 
 	/** Time interval in us in which wider acceptance thresholds are used after arming. */
 	static constexpr uint64_t LAND_DETECTOR_ARM_PHASE_TIME_US = 2000000;

src/modules/land_detector/land_detector_params.c

@@ -60,7 +60,7 @@ PARAM_DEFINE_FLOAT(LNDMC_Z_VEL_MAX, 0.50f);
  *
  * @group Land Detector
  */
-PARAM_DEFINE_FLOAT(LNDMC_XY_VEL_MAX, 1.50f);
+PARAM_DEFINE_FLOAT(LNDMC_XY_VEL_MAX, 0.5f);
 
 /**
  * Multicopter max rotation