Multi-signal detection method and system based on multi-phase filtering and STFT
By adopting multi-signal detection methods based on multi-phase filtering and STFT in electronic warfare systems, the problems of high false alarm rate and high resource consumption at low signal-to-noise ratio are solved, and signal detection with high sensitivity and low false alarm rate is realized.
Patent Information
- Application Number
- CN202411906186.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-03-18
AI Technical Summary
In electronic warfare systems, the existing technology has a high false alarm rate when signal detection is detected at low signal-to-noise ratio and only relies on time domain or frequency domain detection, making it difficult to achieve high time domain and frequency domain resolution at the same time, resulting in high FPGA resource consumption.
Multi-signal detection methods based on multi-phase filtering and STFT are adopted to obtain the PDW parameter information of the signal by collecting pulse signals, digital channelization processing, short-time Fourier transform and time-frequency correlation.
On the basis of low FPGA resource consumption, the sensitivity of signal detection is improved, the signal false alarm rate is reduced, and the simultaneous detection of high time and frequency domain resolutions is achieved.