【摘要】：建立了Chirp調(diào)制激光激勵的紅外熱波雷達成像檢測系統(tǒng),提出了基于分數(shù)階傅里葉變換的Chirp鎖相算法和基于希爾伯特變換時域積分的HT算法,實現(xiàn)了對CFRP層板缺陷的檢測;合理設(shè)計了模擬缺陷的尺寸分布范圍與缺陷判定準則,采用Hit/miss法分析了信號提取算法對檢測概率的影響;給出了不同檢測參數(shù)與判定閾值情況下,相關(guān)算法、Chirp鎖相算法和HT算法提取結(jié)果的檢測概率數(shù)據(jù),確定了紅外熱波雷達成像系統(tǒng)對CFRP層板缺陷的檢測概率水平。
[Abstract]:The infrared thermal wave radar imaging detection system with Chirp modulation laser excitation is established. The Chirp phase-locked algorithm based on fractional Fourier transform and the HT algorithm based on Hilbert transform time-domain integral are proposed to detect the defects of CFRP laminate. The size distribution range and defect judgment criterion of simulated defects are reasonably designed, the influence of signal extraction algorithm on detection probability is analyzed by Hit/miss method, and the different detection parameters and threshold values are given. The detection probabilities of Chirp phase-locked algorithm and HT algorithm are obtained, and the detection probability level of CFRP laminate defects in infrared thermal wave radar imaging system is determined.
【作者單位】： 山東省科學(xué)院海洋儀器儀表研究所;哈爾濱工業(yè)大學(xué)機電工程學(xué)院;
【基金】：國家海洋局海洋公益性行業(yè)科研專項(201505031) 山東省自然基金(ZR2017BF030,ZR2015YL020) 山東省科學(xué)院青年基金項目(2014QN032,2014QN036,2015QN028) 青島創(chuàng)業(yè)創(chuàng)新領(lǐng)軍人才計劃(13-CX-23,13-CX-24)
【分類號】：TG115.28
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本文編號：2259775