Revealing Doppler Signal's Feature of Continuous Wave Doppler System Radio Fuze for Air Attack by Means of Short Time Fourier Transform
Guo Dong-min · 2004
It is a theoritical method to set up a mathetical model about missile-target encounter in the air, to make some reasonable hypotheses and to compute Doppler signal, then to reveal its feature of time or frequence domain. But the theoritical method and traditional Fourier transform can't reveal feature of practical signal which is of nonblanced and stochastic. In this paper, choice of window function is discussed and analyzed, and practical signal's feature of joint time and frequence is revealed by means of Short Time Fourier Transform.