冲激雷达接收中的随机射频干扰抑制方法
Random RFI Suppression in Impulse Radar
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摘要: 该文在分析了冲激雷达回波中存在的随机射频干扰(RFI)的性质与特征的基础上，研究了超宽带时域接收机中的RFI抑制问题。以MSE为准则,提出了波形平均算法和中值滤波算法，并对实测的超宽带表层穿透雷达数据进行了处理；结果表明这两种算法都能较好地抑制随机性的RFI。最后对这两种算法的性能进行了比较和评估。Abstract: Based on the study on the features and characteristics of random Radio Frequency Interference (RFI) in impulse radar, this paper firstly analyzes the RFI supperession in Ultra Wide Band(UWB) time domain receivers. Taking Mean Square Error (MSE) as principle, the wave-average filtering and the median filtering methods of random RFI suppression are raised. The performance of the two methods is demonstrated on data collected from impulse radar and the experimental results also show their consistence.
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Su Yi, et al.. Ultrawide band radar signal detection, estimation and experiment. Journal of Electronics(China), 1999, 16(1): 32-37.[2]黄晓涛.UWB-SAR抑制RFI方法研究.[博士论文],长沙:国防科学技术大学,1999.[3]Miller T, Potter L, McCorkle J. RFI suppression for ultra wideband radar[J].IEEE Trans. on Aerospace and Electronic Systems.1997, 33(4):1142-1156[4]Abend K, McCorkle J. Radio and TV interference extraction for ultra-wideband radar receivers[J].SPIE.1995, Vol.2487:119-129[5]ASTM, Standard Guide for Using the Surface Ground Penetrating Radar Method for Subsurface Investigation, Designation, D 6432-99.[6]Leone G, Pierri R. Nonlinear models in inversion algorithms for tomographic reconstructions.8th Int. Conference on Ground Penetrating Radar, Queensland, Australia, SPIE, 2000, Vol.4084:525-529. -
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