System on chip implementation of 1-D wavelet transform based denoising of fiber optic gyroscope signal on FPGA

Abstract

This paper presents system on chip (SoC) implementation of 1-dimensional discrete wavelet transform (DWT) for real time denoising of fiber optic gyroscope signal (FOG) in Field Programmable Gate Array (FPGA). The Hardware DWT IP is designed by using Distributed arithmetic filters. The design is carried out in Xilinx System generator for DSP and is integrated with Microblaze embedded system for SoC implementation. Simulation was performed on the Virtex5-FX70T -1136 platform for both static and dynamic gyro signal datasets. The results show that the algorithmic (floating point) results match with hardware (fixed point) results. The resource utilization is 60% in Virtex-5FX70T and the maximum frequency of operation is 180 MHz.