arg[H(e)] 解卷绕的 入 continuous (unwrapped) phase curve is denoted 一7T as "arg[H(el)] -2π arg H(e)=ARGH(e)+2r(@ -3T -4π unique r() ARG[H(e)] n Principal value of the phase(相位主值) we refer to ARG [H(ei)] as the e "wrapped"phase r(@) 卷绕的 TW ←一r(o) unique 3'4 121 2 3 4 5 6 7[ ( ) ] j arg H e  = we refer to ARG [ H( ej  )] as the "wrapped" phase , continuous (unwrapped) phase curve is denoted as " arg[H(ej )] " 卷绕的 解卷绕的 [ ( ) ] 2 ( ) H ej ARG r  +   Principal value of the phase （相位主值） 12 r () unique r( ) unique