一种谐波雷达微弱目标信号检测方法及系统
By digitally processing the harmonic radar echo signal and dynamically removing background clutter, the problems of signal energy dispersion and clutter interference in the detection of weak target signals by harmonic radar are solved, achieving accurate enhancement and positioning of target signals and improving detection accuracy and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- LUOYANG INST OF SCI & TECH
- Filing Date
- 2026-05-11
- Publication Date
- 2026-07-17
AI Technical Summary
In existing harmonic radar weak target signal detection technologies, insufficient signal processing methods lead to inadequate phase feature mining, making it impossible to effectively extract the continuous phase component in the harmonic signal. The energy of the same source harmonic signal is dispersed, and the static model of the clutter background field cannot keep up with the dynamic clutter changes in real time, resulting in low detection accuracy and efficiency.
By digitally processing the harmonic radar echo signal, constructing time-domain slices, extracting the second harmonic frequency components and performing phase rotation alignment, and combining this with the construction and removal of dynamic clutter background field, coherent accumulation and precise positioning of the target signal are achieved.
It significantly improves the ability to identify and extract weak target signals, enhances the accuracy and efficiency of signal detection, and ensures clear prominence of target signals and accurate spatial positioning.
Smart Images
Figure CN122172154B_ABST