Abstract
Terahertz three-dimensional imaging system can realize the detection and imaging of near-field targets with high frame rate and high resolution, and can provide more comprehensive information about the three-dimensional geometric distribution structure of the target and the imaging scene. It is suitable for the current high real-time requirements Security inspection, seeker terminal guidance, military reconnaissance and other fields. The high-resolution three-dimensional imaging technology of radar targets in the terahertz band is of great significance to the development of radar technology and the application of radar imaging. In this paper, the research background and significance of the terahertz near-field imaging technology, radar three-dimensional imaging technology, the development status of terahertz radar system and terahertz radar imaging algorithm are reviewed, and the existing problems of terahertz near-field imaging technology are summarized and prospected.
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