diff --git a/doc/3_sensor_models/3_2_lidar.md b/doc/3_sensor_models/3_2_lidar.md
index 58a3838..c74843a 100644
--- a/doc/3_sensor_models/3_2_lidar.md
+++ b/doc/3_sensor_models/3_2_lidar.md
@@ -478,4 +478,29 @@ Additionally, a function to draw the generated point cloud in the simulation is
 
         for point in self.latest_point_cloud:
             point.draw(axes, elems)
+```
+
+Finally, some getters for an external class are implemented as follow. The array of point cloud, global x-y coordinates of the LiDAR can be got.  
+```python
+    def get_point_cloud(self):
+        """
+        Function to get latest point cloud data
+        Each points are calculated on sensor coordinate system
+        """
+
+        return self.latest_point_cloud                
+
+    def get_global_x_m(self):
+        """
+        Function to get installation position x in global coordinate[m]
+        """
+        
+        return self.params.get_global_x_m()
+    
+    def get_global_y_m(self):
+        """
+        Function to get installation position y in global coordinate[m]
+        """
+
+        return self.params.get_global_y_m()
 ```
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