摘要
分析了波束内多目标鉴别技术的重要性,从应用的角度,提出了变尺度离散Chirp-Fourier变换的概念。通过和传统离散傅里叶变换的比较,显示出该变换的优越性。分析了多普勒雷达体制下目标回波信号的形式,并对变尺度离散Chirp-Fourier变换的速度分辨力和加速度分辨力进行了研究。针对波束内多目标的鉴别,提出了一种有效的基于变尺度离散Chirp-Fourier变换的多目标鉴别方法。该方法首先进行加速度鉴别,接着提取加速度,并进行加速度补偿,然后再进行速度鉴别。仿真结果验证了该方法的可行性和有效性。
The importance of multi-target discrimination is analyzed at first. Then the concept of B-DCFT is put forward. The advantages of the transformation are verified by comparing it with traditional Fourier transform. The target echo signal of Doppler radar is studied, and then the speed detection rate and the acceleration detection rate are researched. Finally, a method to discriminate multi-target is put forward based on B-DCFT. The emulate experiment validates its feasibility and validity.
出处
《电光与控制》
北大核心
2008年第2期13-15,26,共4页
Electronics Optics & Control
基金
雷达多目标分辨技术研究项目(51483010105ZS9301)
