| Target description: | ATS #539 tissue-mimicking phantom; c = 1450 m/s. Background scatter, wires, anechoic cysts (8, 6, 4, 3, and 2 mm), and 15-mm graduated scattering cysts. |
| Aberration: | Rippled RTV silicone rubber: c = 1100 m/s 3-mm max. thickness 1-mm peak-to-peak ripple 2.4-mm correlation length 6-mm stand-off distance from transducer |
| Data format: | 64x64x5002 array of 16-bit signed integers, big endian, no header; "fast" dimension is time (5002), then receive element number (64), then transmit element number (64). |
| Temporal sampling: | 25 MHz rate (transducer center frequency 2.6 MHz); first sample at 0 µs; 160x averaging. |
| Spatial sampling: | 315 µm pitch. |
| Recommended pre-processing: | Band-pass filter in time; dip filter in space-time; correct 64-signal monostatic subset by scaling and time-shifting. MATLAB code: ats_2ab1.m, uses data file bpf2.mat. |
| Download: | ats_2ab1.bin (40 MB). |