發送短信 : Leader-follower of quadrotor micro aerial vehicle

  ____       ___      ____      _____     _____   
 |  _ \\    / _ \\   |  _ \\   |  ___||  |__  //  
 | |_| ||  | / \ ||  | |_| ||  | ||__      / //   
 | .  //   | \_/ ||  | .  //   | ||__     / //__  
 |_|\_\\    \___//   |_|\_\\   |_____||  /_____|| 
 `-` --`    `---`    `-` --`   `-----`   `-----`