摘要
针对探地雷达(Ground Penetrating Radar,GPR)与移动通信系统终端存在的频谱共用的电磁兼容性问题,着重分析了GPR接收中随机性射频干扰(Radio Frequency Interference,RFI)的性质,以及该类RFI与GPR目标回波信号在小波多尺度分解中分布的差异性,并基于此分析,提出了基于小波变换域的GPR随机RFI抑制算法,利用两种实测实验数据进行验证,结果表明,该方法能较好地抑制GPR的随机性RFI。
Due to the frequency sharing, Electro Magnetic Compatibility between GPR and Mobile Telephone System is crucial. In the current study, the properties of the random RFI signal received by GPR are analyzed in detail, and the differences between the random RFI and target signal are presented in wavelet field. Furthermore, the method of random RFI suppression based on wavelet transform is proposed. Additionally, the two types of data are collected to validate the performance of the method. Finally, the experimental results prove the effectiveness of the method.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2009年第3期65-69,共5页
Journal of National University of Defense Technology
基金
国家863计划资助项目(2008AA12Z117)
关键词
探地雷达
射频干扰
小波变换
Lipschitz指数
ground penetrating radar （GPR）
radio frequency interference （RFI）
wavelet transform
Lipschitz exponent
