SAMP reconstruction method for foresight imaging of mobile platform
The invention belongs to the field of foresight imaging of a mobile platform, and discloses an SAMP reconstruction method for foresight imaging of the mobile platform, which comprises the following steps of acquiring a baseband echo signal, carrying out range-direction matched filtering processing o...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention belongs to the field of foresight imaging of a mobile platform, and discloses an SAMP reconstruction method for foresight imaging of the mobile platform, which comprises the following steps of acquiring a baseband echo signal, carrying out range-direction matched filtering processing on the baseband echo signal, sequentially carrying out linear trajectory approaching, envelope de-chirp and range-direction inverse Fourier transform processing on the range-direction matched filtering signal, acquiring pre-processed echo signals, building an over-complete dictionary matrix, and adopting an improved SAMP algorithm to complete foresight imaging of the mobile platform. According to the method, through formula derivation of a single-base scanning foresight imaging model, a mobile platform foresight imaging echo recording process is equivalent to a linear inversion problem model, and then an improved dictionary matrix capable of accurately describing a target scene is generated aiming at the specific pr |
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