Target micro-motion conveys vital information which is favorable for understanding synthetic aperture radar (SAR) images.However
image defocusing also ensues.Therefore
techniques on micro-motion effect analysis
micro-motion target detection and imaging are gaining more and more attentions in the remote sensing field.These techniques are generally named SAR/micro-motion target indication (SAR/MMTI).In this paper
topics on SAR/MMTI are introduced including its concept
key difficulties
existing experiments
processing approaches
and its application promise.Some directions of future work on SAR micro-motion are predicted at last.