A high-accuracy baseband signal processing system of digital phosphor technology for real-time spectrum analysis is proposed based on fast filter bank (FFB). The modular instruments based platform is utilized to verify the performance of the proposed scheme implemented with field-programmable gate array (FPGA) module. With the single-tone signal as a test signal, the experimental results show that the proposed scheme can improve the accuracy of the real-time spectrum analysis at the cost of slightly higher complexity than that of fast Fourier transform (FFT) based scheme.
