Laser Radar Range-Doppler Imaging and Simulation on High-speed Target
On the basic of the representation of the principle of Doppler imaging, an echo model of high-speed target illuminated by broadband linear frequency modulated (LFM) signal was established in this paper. For high-speed target, because of its nonlinear echo phase and time-varying Doppler frequency shift, the Doppler spectrum of the target acquired by the traditional Fourier method was ambiguous, and the same in the radar images of the target Therefore, an adaptive Wigner-Ville time-frequency analysis method was presented in the paper, that is, the local fuzzy function could be obtained by applying the twodimensional adding Window Fourier Transform to signals Wigner-Ville distribution, which made the kernel function, not only be adaptive to time, but also to the frequency. Finally, the simulation results show that the method has a good timefrequency concentration, and effectively control the cross-term interference.
GUO Hua-ling DENG Jia-hao CAI Ke-rong
National Key Laboratory for Mechatronics Engineering and Control, Beijing Institute of Technology,Be National Key Laboratory for Mechatronics Engineering and Control, Beijing Institute of Technology,Be
国际会议
3rd International Photonics & OptoElectronics Meetings(第三届国际光子与光电子学会议 POEM 2010)
武汉
英文
1-6
2010-11-03（万方平台首次上网日期，不代表论文的发表时间）