Ultrasound data and code associated with the paper "Detection and characterization of targets in complex media using fingerprint matrices". Reflection matrix of metal spheres hidden in the granular suspension (Fig.1, Fig.2): 2022_02_19_10-27-13_Sonde3D_VirtSrc_RepImp_Spheres5AND8AND10mm_ZAround20mm_Sand300TO315um_Cache_SOS1500ms_Data.mat Reflection matrix of the 10 mm-diameter metal sphere in free space (Extended Data Fig.1) 2021_10_13_14-10-54_Sonde3D_VirtSrc_FullVsBasis_RepImp_BilleDiam10mm_Z20mm_Data.mat Fingerprint Matrix of the 10 mm-diameter metal sphere (Fig.2) known_eig_t37_60_2021_10_13_14-10-54_Sonde3D_VirtSrc_FullVsBasis_RepImp_BilleDiam10mm_Z20mm.mat Reflection matrix of the 8 mm-diameter metal sphere in free space (Extended Data Fig.1) 2022_01_27_10-06-24_Sonde3D_VirtSrc_RepImp_Sphere8mm_Z20mm_SOS1500ms_Data.mat Fingerprint Matrix of the 8 mm-diameter metal sphere (Fig.2) known_eig_t37-60_2022_01_27_10-06-24_Sonde3D_VirtSrc_RepImp_Sphere8mm_Z20mm_SOS1500ms_Data.mat Reflection matrix of the lesion marker hidden in the foam (Fig.3) 2022_04_26_14-39-38_Sonde3D_VirtSrc_Hologic_hiddenUnderSponge_Zaround30mm_translated_Data.mat Reflection matrix of the lesion marker in free space (Fig.3) 2022_04_26_14-33-39_Sonde3D_VirtSrc_Hologic_Nothidden_Zaround30mm_Data.mat Reflection matrix of the muscle tissue Rframe_1-1nbFrame1_Nangle101_freq2.5-9.5MHz_subfreqBand-7MHz-dFreqInfMHz_z2-60mm_SOS1580_dZFoc65.7873mm_dRmax0.1mm_RxFnum1_______TEST.mat Code source for computing source data of Fig.2 DORT_adaptiveBF_OnRF_VsU_MatrixProd_Antton_ThroughFarField_v1.m Source data for Fig. 2 WithGB_x5v25_AdaptedBF_d8mm_WITHAngleFilterNoEigenvaluesUPto12ATHighFreq.mat WithGB_x5v25_AdaptedBF_d10mm_WITHAngleFilterNoEigenvaluesUPto20ATHighFreq.mat WithGB_x5v25_ImConfATHighFreq.mat WithGB_x-6v5_AdaptedBF_d8mm_WITHAngleFilterNoEigenvaluesUPto12ATHighFreq.matWithGB_x-6v5_AdaptedBF_d10mm_WITHAngleFilterNoEigenvaluesUPto20ATHighFreq.matWithGB_x-6v5_ImConfATHighFreq.matWithGB_y-4v75_AdaptedBF_d8mm_WITHAngleFilterNoEigenvaluesUPto12ATHighFreq.matWithGB_y-4v75_AdaptedBF_d10mm_WITHAngleFilterNoEigenvaluesUPto20ATHighFreq.mat WithGB_y-4v75_ImConfATHighFreq.mat Matlab file to plot Fig. 2 ShowDIMO_ImConfAndBFAdapted.m Source Data for Fig. 4 figure_data.mat Matlab file to plot Fig. 4 matlab_fig.m