Electromagnetic waves, ultrasonic waves, seismic waves can be used for Soil base profiling or soil sensing. When the soil is illuminated using these waves a return signal or echo is received. The received echo arises due to reflection, attenuation and scattering of transmitted waves from the soil structure. So the characteristics of the echo can be used for extraction of useful information about the soils internal structure and composition. This paper focuses on use of ultrasonic waves for soil profiling. Multiphysics simulations of propagation of acoustic waves in water and soil was done to analyze the effect of change in parameters such as density of soil, driving frequency, angle of incidence on the return signal obtained. Ultrasonic pulse echo sounding experiments were performed to capture the return signals coming from various materials such as water, rocks, soil blocks and mud. Power Spectral Density (PSD) of the return signals was analyzed which are unique for different materials. Wavelet based echo processing and spectral histogram minimization for echo processing are used to find Time of Arrival (TOA). The TOA results along with the multiphysics simulation results can be utilized to develop a syatem for soil base sensing.