一种基于虚拟基线构造的双基SAR干扰源定位方法
By constructing virtual baseline observation nodes and using the generalized cross-correlation method, the problem of insufficient interference source localization accuracy in bistatic SAR systems is solved, achieving high-precision and robust interference source localization, which is applicable to interference source localization in the field of radar signal technology.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NORTHWESTERN POLYTECHNICAL UNIV
- Filing Date
- 2026-05-14
- Publication Date
- 2026-07-17
AI Technical Summary
Existing bistatic SAR systems suffer from insufficient positioning accuracy and angular ambiguity in radio frequency interference localization, especially under complex relative position conditions where the positioning error is significant, making it difficult to achieve high-precision interference source localization.
By constructing virtual baseline observation nodes, expanding the equivalent observation geometric dimension, measuring the time difference of arrival using the generalized cross-correlation method, and iteratively solving for the location of interference sources using the nonlinear least squares method, a set of virtual observation equations is established, and the optimal node combination is selected to reduce positioning errors.
Without altering the existing hardware structure and track design, the positioning accuracy and robustness of interference sources have been significantly improved, providing a reliable basis for subsequent interference avoidance and suppression.
Smart Images
Figure CN122410451A_ABST