沖激雷達(dá)接收中的隨機(jī)射頻干擾抑制方法
Random RFI Suppression in Impulse Radar
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摘要: 該文在分析了沖激雷達(dá)回波中存在的隨機(jī)射頻干擾(RFI)的性質(zhì)與特征的基礎(chǔ)上，研究了超寬帶時(shí)域接收機(jī)中的RFI抑制問題。以MSE為準(zhǔn)則,提出了波形平均算法和中值濾波算法，并對(duì)實(shí)測(cè)的超寬帶表層穿透雷達(dá)數(shù)據(jù)進(jìn)行了處理；結(jié)果表明這兩種算法都能較好地抑制隨機(jī)性的RFI。最后對(duì)這兩種算法的性能進(jìn)行了比較和評(píng)估。
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關(guān)鍵詞:
- 表層穿透雷達(dá); 沖激信號(hào); 射頻干擾; 波形平均濾波; 中值濾波
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. -
Su Yi, et al.. Ultrawide band radar signal detection, estimation and experiment. Journal of Electronics(China), 1999, 16(1): 32-37.[2]黃曉濤.UWB-SAR抑制RFI方法研究.[博士論文],長(zhǎng)沙:國(guó)防科學(xué)技術(shù)大學(xué),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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