Research Article
Fractional Fourier Transform for Ultrasonic Chirplet Signal Decomposition
Table 2
Parameter estimation results of two moderately overlapped ultrasonic echoes.
| | (us) | (MHz) | | (MHz)2 | (MHz)2 | (Rad) |
| | Echo 1 | | | | | | | | Actual parameter |
2.7
|
7.0
|
1
|
20
|
35
| | | Estimated parameter |
2.70
|
7.02
|
1.00
|
20.04
|
33.55
|
0.67
|
| | Echo 2 | | | | | | | | Actual parameter |
3.0
|
5
|
1
|
25
|
20
|
0
| | Estimated parameter |
3.00
|
5.00
|
1.00
|
24.87
|
20.38
|
0.01
|
|
|
