Anti-jamming of Inverse Synthetic Aperture Radar based on Slope-varying Linear Frequency Modulation Signal

作者：Zhu Yupeng^*; Wu Liang; Wang Hongqiang; Li Xiang

来源：Defence Science Journal, 2009, 59(5): 537-544.

DOI：10.14429/dsj.59.1556

• Inverse synthetic aperture radar
• deceptive jamming
• anti-jamming
• doppler blurring
• doppler domain averaging
• linear frequency modulator
• automatic target recognition
• ISAR
• ATR

Deceptive jamming technology against inverse synthetic aperture radar is matured now, which is meaningful in military application. But the research on anti-jamming technology for inverse synthetic aperture radar (ISAR) is still not a mature technology. Through the analysis on the theory of deceptive jamming technology against ISAR, a new method for anti-jamming against ISAR based on linear frequency modulation signal's frequency slope-varying is presented. The false target echo energy is suppressed due to frequency modulation slope mis-matching. Doppler domain averaging is adopted for improving the quality of the ISAR image, which helps automatic target recognition. Simulation result based on simulating data shows the validity of the new algorithm.

• 出版日期2009-9
• 单位中国人民解放军国防科学技术大学