ZHOU Jian-hua, BAI Zhao. Modal identification of luminosity signals in frequency domain[J]. Editorial Office of Optics and Precision Engineering, 2002,(4): 346-353
ZHOU Jian-hua, BAI Zhao. Modal identification of luminosity signals in frequency domain[J]. Editorial Office of Optics and Precision Engineering, 2002,(4): 346-353DOI:
Object luminosity signals were identified by means of digital signal processing(DSP) and modal identification. Modified luminosity signal was transferred to frequency domain by special discrete fourier transfer(DFT) which is like gabor transfer. Then
signal was filtered and partitioned into fine frequency bands. After that
Fisher's discriminance was used in frequency domain wth characters
which were energies of a group of selected fine frequency bands. The identification function matrix(IFM) was obtaind through recognized data and identification rulers were given. After unidentified data had been put into the IFM
they were categorized under the rulers. Three satellites' luminosity signals were identified successfully and difficulties like low SNR