摘要
在毫米波雷达系统中,信噪比对作用距离的影响很大。本文利用双谱技术提取出目标信号双谱的局部相位信息作为特征矢量;该特征良好的抗噪性大大降低了目标识别对雷达系统信噪比的要求,从而提高了毫米波雷达的灵敏度及作用距离。
In mmW radar system, SNR affect heavily on radar range. To lower the SNR demand of target recognition, a new approach of feature extraction based on the bispectrum technique is presented. The feature vectors defined from bispectrum have high stability even when SNR is very low. Thus, the sensitivity and range of mmW radar are improved.
关键词
高阶累积量
双谱
毫米波雷达
特征矢量
系统噪声
Higher order cumulants, Bispectrum, Millimeter-wave radar, Feature vector, System noise
