Table 1 Transducer and processing parameters

Sound speed c

1540 m/s

Number of array elements M

128

Element pitch

0.3 mm

Center frequency \(f_{0}\)

5 MHz

Sampling frequency \(f_{s}\)

40 MHz

F number

1.4

Subarray length L

0.3M

Diagonal loading factor \(\Delta\)

0.01

SLSC sampling kernel \(n_{2} - n_{1}\)

1 cycle

SLSC ratio Q

15%