Orthogonal waveform separation based on echo compression for airborne MIMO-SAR systems

Orthogonal waveform separation based on echo compression for airborne MIMO-SAR systems

Blog Article

Attention has been devoted to multi-input multi-output (MIMO) synthetic aperture radar (SAR) systems in recent years.The applications of MIMO-SAR systems which involve high-resolution wide-swath enchanted wonderstruck perfume remote sensing, three-dimensional imaging, and multi-baseline interferometry are seriously limited, because the superposed echoes of the multiple transmitted orthogonal waveforms cannot be separated perfectly.The imperfect separation will introduce ambiguous energy and degrade SAR images dramatically.Here, a novel orthogonal waveform separation scheme based on echo compression is proposed for airborne MIMO-SAR systems.Specifically, apart from simultaneously transmissions, the transmitters are required to radiate alone several times in a synthetic aperture to acquire their private inner-aperture channels.

For the relevant scene, the energy of the solely radiated orthogonal waveforms can be concentrated by matched-filtering the superposed echoes canon imageclass mf227dw with the sensed echoes.To this extent, the orthogonal waveforms can be perfectly separated through extracting the peaks from the echo-compressed results.The proposed scheme is validated by simulation results.