摘要
针对探测空中目标的超宽带(UWB)/冲激雷达,本文讨论了UWB/冲激雷达的信号处理技术,主要是信号检测和目标特性分析,首先讨论了目标检测技术,提出了用小波变换和高阶谱估计技术在变换域内进行检测的算法;其次讨论了目标特性分析技术,采用了高阶谱估计,提出了一种时域双谱估计算法,它可精确估计复杂形体目标的局部散射中心的分布.最后,结合作者等人研制的冲激雷达实验系统,对上述信号处理方法进行了实验研究,验证了上述信号处理方法的有效性。
With reference to the air target detected by ultra-wideband(UWB)/impulse radar,
this paper discussed transient signal processing techniques. In weak UWB signal detection, wavelet transforms and high order spectrum estimation were preferred. In target characteristics analysis, a time domain bispectrum estimation algorithm was presented, which could estimate accurately local scattering distribution of complex target. A free field experimental impulse radar system was introduced in this paper. With this system, the response of several canonical target models and scale aircraft were measured and processed.
关键词
雷达
信号检测
目标特性
Ultra-wideband radar, Signal detection, Target characteristics
