about distance

[Yaoxingtian]

hi, could you pls. help explain the pose output：position and orientation. is the position means real distance ?

pose: position: x: -0.7781473994255066 y: -0.21098142862319946 z: 0.8552718758583069 orientation: x: -0.3901138536836507 y: 0.6870443043743111 z: -0.5281226612457122 w: 0.3112358585858271

thanks so much!