發(fā)布時間：2018-06-29 00:09

  本文選題：遙感 + 地面三維激光掃描�。� 參考：《激光與光電子學(xué)進(jìn)展》2017年11期

【摘要】：受掃描儀到掃描物體的激光測距值、激光入射角、大氣衰減等因素的影響,相同目標(biāo)的激光強(qiáng)度存在較大偏差。從激光雷達(dá)測距方程出發(fā),分別對激光強(qiáng)度的距離效應(yīng)和角度效應(yīng)進(jìn)行改正。激光強(qiáng)度與激光入射角的余弦大致呈線性關(guān)系,但激光強(qiáng)度的距離效應(yīng)較為復(fù)雜,激光強(qiáng)度總體上不與距離的平方呈反比,因此提出了一種利用分段多項式模型來消除激光強(qiáng)度距離效應(yīng)的方法。實驗表明,提出的改正模型能對點云激光強(qiáng)度進(jìn)行有效補(bǔ)償,通過將激光強(qiáng)度分別進(jìn)行角度改正和距離改正,能夠有效消除由距離和入射角引起的強(qiáng)度偏差,使同類物體的激光強(qiáng)度趨于一致。
[Abstract]:Under the influence of the laser ranging value from scanner to scanning object, laser incidence angle, atmospheric attenuation and other factors, the laser intensity of the same target has a large deviation. The range effect and angle effect of laser intensity are corrected from the range equation of laser radar. The laser intensity has a linear relationship with the cosine of the laser incidence angle, but the distance effect of the laser intensity is more complex, and the laser intensity is not inversely proportional to the square of the distance, as a whole, the laser intensity is not inversely proportional to the square of the distance. Therefore, a piecewise polynomial model is proposed to eliminate the laser intensity range effect. The experimental results show that the proposed correction model can effectively compensate the laser intensity of point cloud, and the deviation caused by distance and incident angle can be effectively eliminated by correcting the laser intensity by angle correction and distance correction, respectively. The laser intensity of the same kind of object tends to be consistent.
【作者單位】： 江西理工大學(xué)建筑與測繪工程學(xué)院;同濟(jì)大學(xué)測繪與地理信息學(xué)院;浙江農(nóng)林大學(xué)省部共建亞熱帶森林培育國家重點實驗室;
【基金】：江西理工大學(xué)博士啟動基金(jxxjbs3401223283) 浙江省公益技術(shù)研究項目(LGN18C160004)
【分類號】：P225.2

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本文編號：2079955