研究目的
To improve the ability of radar to resist active coherent jamming by proposing a new SAR signal based on phase-perturbed LFM (PPLFM) signal.
研究成果
The phase perturbation-based LFM waveform design can provide a sufficient number of orthogonal signals that maintain the imaging quality of SAR images while resisting jamming. It has the ability to suppress active coherent jamming, with the jamming-to-noise ratio (JNB) in the false target jamming reduced by 9.04dB and the SJR in the random frequency-shift jamming increased by 5.95dB.
研究不足
Only the LFM signal based on phase perturbation is studied, and the evaluation index is single. More signal waveforms need to be researched in the future.
1：Experimental Design and Method Selection:
The design method of PPLFM signal is presented, and the disturbance amplitude matrix is optimized.
2：Sample Selection and Data Sources:
Simulation parameters include carrier frequency, signal bandwidth, sampling frequency, pulse width, pulse repetition frequency, platform height, and speed.
3：List of Experimental Equipment and Materials:
Not explicitly mentioned.
4：Experimental Procedures and Operational Workflow:
The performance of PPLFM signal is analyzed with different disturbance parameters, and its ability to suppress false target jamming and frequency shift jamming is compared with LFM signal.
5：Data Analysis Methods:
The jamming-to-noise ratio (JNB) and signal-to-interference ratio (SJR) are calculated to evaluate the performance.
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