estimation of multiresolution signal direction-of-arrival

signal direction

direction signal light

anticipatory water level signal

digital signal level 0

Digital Signal Level 0- Digital Signal Level 3 DS0-DS3

digital signal level 0， DS-0 0

digital signal level 1

digital signal level 1， DS-1 1

digital signal level 2

Digital Signal Level 3

digital signal level 3， DS-3 3

digital signal level 4

digital signal level 5

digital signal，level n DS-n

facsimile signal level

facsimile-signal level

high level signal

high water level signal