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The central aim is to develop a method for effectively extracting weak harmonic signals in challenging radar environments.

A Method for Extracting and Imaging Weak Second‐Harmonic Signals in Harmonic Radar

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The central aim is to develop a method for effectively extracting weak harmonic signals in challenging radar environments.
Proposes an adaptive signal extraction method based on harmonic characteristics.
Incorporates two-dimensional adaptive time-frequency extraction mechanisms.
Utilizes harmonic statistical features for effective signal separation.
Demonstrated significant enhancement in imaging quality of harmonic radar.
Achieved improved detection and identification of non-cooperative targets in experimental results.

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Randomized trial demonstrates improved detection of weak signals in complex environments, suggesting enhanced radar effectiveness.

He et al. (2026) studied this question.

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