
278 ◾ David R. Burton
algorithm as the wraps are progressively encountered and resolved. If the
algorithm nds no substantive dierence between pixels, it simply passes
on to the next pixel. However, if it encounters a phase jump, which will be
represented by a discontinuity in the data approaching 2π in value, it will
shi the following data either up or down as appropriate.
0
3
2
1
0
–1
–2
–3
–4
100 200 300
Sample Index
400 500 600 0
9
8
7
6
5
4
3
Unwrapped Phase in Radians
2
1
0
100 200 300
Sample Index
(a) (b)
(c) (d)
400 500
0
6
5
4
3
2
1
0
–1
Unwrapped Phase in Radians
–2
–3
–4
100 200 300
Sample Index
400 500 600
0
6
4
2
0
–2
Unwrapped Phase in Radians ...