Research Article
Fractional Fourier Transform for Ultrasonic Chirplet Signal Decomposition
Table 1
Parameter estimation results of two slightly overlapped ultrasonic echoes.
| | (us) | (MHz) | | (MHz) 2 | (MHz) 2 | (Rad) |
| | Echo 1 | | | | | | | | Actual parameter |
2.5
|
7.0
|
1
|
20
|
35
| | | Estimated parameter |
2.50
|
7.00
|
1.00
|
20.00
|
35.00
|
0.52
|
| | Echo 2 | | | | | | | | Actual parameter |
3.0
|
5
|
1
|
25
|
20
|
0
| | Estimated parameter |
3.00
|
5.00
|
1.00
|
25.00
|
19.98
|
0
|
|
|
