Added getter for sensors.

core/src/main/java/org/orekit/rugged/api/Rugged.java

@@ -17,6 +17,7 @@
 package org.orekit.rugged.api;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -354,6 +355,13 @@ public class Rugged {
         sensors.put(lineSensor.getName(), lineSensor);
     }
 
+    /** Get the line sensors.
+     * @return line sensors
+     */
+    public Collection<LineSensor> getLineSensors() {
+        return sensors.values();
+    }
+
     /** Select inertial frame.
      * @param inertialFrameId inertial frame identifier
      * @return inertial frame