Performance assessment of the MUSCLE synthetic aperture sonar

Intensive Resolution Measurement With the Samdis Multi-Aspect Sas

“…This means that the spheres used for resolution measurements are slightly too big. The degradation of the synthetic beampattern with a spherical radius equal to 40cm (worst case) can be predicted with a simple simulation and with equation (6). On Figure 11, we observe the impact of a spherical target with 40cm radius:  3dB beamwidth is equal to 2.31cm instead of 2.22cm  Sidelobe level is degraded by 2.75dB  Decrease of the gain of 0.58dB…”

Development of a Simulation Environment for Evaluation of a Forward Looking Sonar System for Small AUVs

“…To compute the contribution from volume backscattering (11) for each distance bin, BP T and BP R are computed with (18) and the ensonified volume V (12) is 4 3 2) and ( 3) is the distance to the center of each bin d c n (17). To include the sonar resolution (13), we replace the distance bins d n with resolution bins δ i .…”

“…Espresso [2] was built to evaluate NATO minehunting sonar performance. Espresso makes a flat and homogeneous seabed assumption and does not include sonar motion in the model [4]. LYBIN [3] is an acoustic ray-theoretical model for sonar performance.…”