diff --git a/matlab/GPSaidedINS_cycling.m b/matlab/GPSaidedINS_cycling.m
index 42a00c6535b07b3237c9bb46d0bba27559c0090f..87d5a6d1bcb0bbda7a19891c5214b369afe634ff 100644
--- a/matlab/GPSaidedINS_cycling.m
+++ b/matlab/GPSaidedINS_cycling.m
@@ -301,12 +301,12 @@ end
 function sv=random_satellites(sv_old)
 coin=random('uniform',0,1);
 sv=sv_old;
-if sv_old==6  %simulate satellite loss of visibility
+if sv_old==6 
     if coin<0.005
         sv=5;
     end
 end
-if sv_old==5  %simulate satellite loss of visibility
+if sv_old==5
     if coin>0.99
         sv=6;
     end
@@ -314,7 +314,7 @@ if sv_old==5  %simulate satellite loss of visibility
         sv=4;
     end     
 end
-if sv_old==4  %simulate satellite loss of visibility
+if sv_old==4  
     if coin>0.99
         sv=5;
     end
@@ -322,7 +322,7 @@ if sv_old==4  %simulate satellite loss of visibility
         sv=3;
     end     
 end
-if sv_old==3  %simulate satellite loss of visibility
+if sv_old==3
     if coin>0.95
         sv=4;
     end