In order to significantly improve anti-jamming capability and real-time data processing capability for spectrum detection

static spectroscopy system is designed based on FPGA. Static interferometer is chosen to replace the mechanical scanning

so anti-jamming capability of system is improved

to make it suitable for design requirements of portable spectrometer. FPGA chip is used in the system to complete high-speed data processing for interference fringe

so as to achieve design requirements of real-time response. System architecture

hardware circuit

and spectrum analysis algorithm are designed. Theoretical derivation and calculation of the spectrum reduction are given. Experiments use FPGA development board

which is the type of Virtex2—Pro

to test for 660 nm laser spectroscopy. The calculated effect of spectrum is compared with simulation data by Matlab. Experimental results show that the system can effectively solve the spectrum distribution function of measured laser. It’s the advantages of high anti-jamming ability

the high speed and the high precision in the system. It is suitable for application characteristics of portable spectrum analyzer.