| Autor: |
ZHANG Jian-zhong, MU He-qiang, WEN Shu-liang, LI Yan-bing |
| Předmět: |
|
| Zdroj: |
Transactions of Beijing Institute of Technology; 2020, Vol. 40 Issue 5, p543-551, 9p |
| Abstrakt: |
Analyzing the principles of the ISRJ and the characteristics of the discontinuous retransmission and sampling of ISRJ in time domain, an anti ISRJ method based on stepped LFM joint time-frequency analysis (JTFA) was proposed. This method was designed to utilize the sub pulses' orthogonality to cover each other, to extract the discontinuous retransmission signal segment with short time Fourier (STFT) in time domain, and taking the maximum signal of this segment as threshold to process the interferences suppression in time-frequency matrix. Through inverse STFT, the time domain signal could be obtained for target detection. Theoretical analysis and experimental results show this method can carry out anti ISRJ with different patterns, maximize the undisturbed signal. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
