| Autor: |
Zainab Yunusa Yusuf, M. Ajiya, Ashraf M. A. Ahmad, Abdulkadir Muhammad Lawan |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
2019 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE). |
| Popis: |
In the field of electronic warfare (EW), sorting of low probability of intercept (LPI) radar signals is very important in order to determine the capability of the intercept radar emitter. This paper presents a novel form of sorting various types of airborne radar signals using Wigner-Ville distribution (WVD). The WVD is modified using two kernel filters in order to cater for various forms of signal distortions due to noise. The sorting is carried using the instantaneous frequency (IF) obtained from this modified WVD which involves sorting the LPI radar signals into LPI-phase or LPI-frequency group. The non-LPI radar signal of constant frequency and phase parameter is also considered for the sake of test signal completion. Performance analysis is finally carried out at different signal-to-noise ratios (SNRs) in order to verify the probability of correct sorting (PCS). Results obtained showed that PCS depends on the internal modulation of the intercepted signal. The proposed method was able to easily sort non-LPI radar signal with 100% PCS achieved at minimum SNR of -12 dB while the remaining LPI radar signals required higher SNR for 100% PCS. Finally, it was shown in this paper that the proposed method outperforms previous works reviewed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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