Doppler shift compensation algorithm based on inverse synthetic aperture ladar in binary phase-coded signal

Abstract The binary phase-coded signal is used in inverse synthetic aperture ladar (ISAL) as a commonly pulse compression signal. However, due to its sensitivity doppler shift, it will lead poor or even uncompressible results. Combined with the principle of ladar, shift introduced by target motion have very significant impact, further degrading imaging By using digital moving detection (DMTD) method, information each distance unit extracted performing Fourier transform on same unit, and then compensation factor constructed frequency domain compensate for this doppler, correcting adaptation problem brought improving result.