Direction finding method, system and device based on single-element mobile synthetic aperture de-coherence
By employing single-element moving synthetic aperture technology, combined with temporal multisampling and covariance matrix eigenvalue decomposition, a signal subspace matrix is constructed and pre- and post-convolution kernel operations are performed. This solves the problem of high-resolution DOA estimation for single-element sensors in coherent signal scenarios, achieving DOA estimation with no aperture loss and low complexity.
Patent Information
- Application Number
- CN202610856344.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-15
- Publication Date
- 2026-07-17
AI Technical Summary
In array signal processing, single-element sensors struggle to achieve high-resolution DOA estimation of coherent signals with low complexity and no aperture loss under multipath effects. Existing technologies suffer from high hardware complexity and high system cost.
A method based on single-element moving synthetic aperture is adopted. The signal is received by a single-element sensor moving at a constant speed in a straight line. By combining time-domain multisampling and covariance matrix eigenvalue decomposition, a signal subspace matrix is constructed and pre- and post-convolution kernel operations are performed. The DOA estimation is performed using the MUSIC/ESPRIT algorithm.
It achieves high-resolution DOA estimation without aperture loss in coherent signal scenarios, improving the estimation accuracy of coherent signals and reducing computational complexity.
Smart Images
Figure CN122410433A_ABST