VLSI design for 3D-Ultrasonic source localization using General Cross Correlation and Triangulation algorithm

Localization system is part of the study in navigation. One of the most navigation systems which are relatively robust in many propagation media and accommodates inaudible sound is Ultrasonic wave. But ultrasonic wave works in the high-frequency domain so that there will need special treatment for implementation in the navigation system. In this paper, there will be explained VLSI system modeling that accommodates ultrasonic sound localization. Under this research, ultrasonic localizer system is implemented in two basic subsystems, the first is signal conditioning using heterodyne and low pass filter in 34 KHz heterodyne frequency and 44 KHz middle frequency. Then, after the signal has been digitized, it will be processed in Digital signal processor under General Cross Correlation (GCC) and triangulation algorithm to get the final result that represents 3D Cartesian coordinate. The result of this research is 3D ultrasonic localizer has been brought to be successfully implemented in model simulation using Modelsim^® and Matlab^®. The system has been tested and compared with theoretical computation. For the future implementation, the signal conditioning system is potentially implemented in analog IC Design.