Title :
Application of fast fourier transform in Laser Doppler velocimeter
Author :
Song Nianlong ; Chi Jianfeng ; Li Qi
Author_Institution :
Sch. of Autom. & Inf. Eng., Xi´an Univ. of Technol., Xi´an, China
Abstract :
Laser Doppler velocimeter performance mainly depends on the doppler signal processing, the key of which is FFT. This study adopted an effective generation algorithm of a rotating factor of FFT pocessor-radix-2 which can reduce the memory spaces and the frequency of memory access. Take a 8-bit and 64-point FFT for example, based on FPGA, this paper designed and built a doppler signal processing experimental platform. By analyzing the signal generated from optical platform the method has been tested. It is drawn that this algorithm can not only improve the speed of the doppler signal processing, but also realize the purpose of reducing hardware area and power consumption; meanwhile, it creates conditions for the design of high-speed micro laser Doppler velocimeter with low power consumption.
Keywords :
Doppler measurement; fast Fourier transforms; field programmable gate arrays; high-speed optical techniques; laser velocimeters; signal processing; Doppler signal processing; FPGA; fast Fourier transform; hardware area reduction; high-speed microlaser Doppler velocimeter; power consumption; rotating factor; Doppler effect; Educational institutions; Electronic mail; Field programmable gate arrays; Laser applications; MATLAB; Signal processing; FFT; FPGA; LDV; Rotating Factor;
Conference_Titel :
Control Conference (CCC), 2013 32nd Chinese
