本文選題：水深反演 + 對(duì)數(shù)比例變換法　； 參考：《測(cè)繪科學(xué)》2017年11期

【摘要】：針對(duì)對(duì)數(shù)比例變換法和多波段模型法兩種操作簡(jiǎn)便的水深反演方法的優(yōu)劣進(jìn)行對(duì)比,旨在探討二者對(duì)于大量淺海水深快速反演流程化工作的適用性�；谒顓⒖紨�(shù)據(jù),隨機(jī)選取138個(gè)樣本點(diǎn)分別構(gòu)建反演模型,并分層隨機(jī)抽取100個(gè)驗(yàn)證點(diǎn)進(jìn)行精度評(píng)價(jià)。從模型決定系數(shù)R2、反演精度,以及方法魯棒性和適用性3個(gè)方面進(jìn)行對(duì)比分析。結(jié)果表明,多波段模型法的決定系數(shù)R2(0.912)優(yōu)于對(duì)數(shù)比例變換法(0.776);多波段模型法的反演平均絕對(duì)誤差為1.47m,平均相對(duì)誤差11.67%,均略低于對(duì)數(shù)比例變換法(1.45m,11.49%),但后者在小于1m的水深范圍內(nèi)的反演結(jié)果存在大范圍錯(cuò)誤,精度明顯低于前者;多波段模型法可通過對(duì)回歸方程和回歸系數(shù)的顯著性檢驗(yàn)而不斷優(yōu)化,魯棒性和適用性亦明顯優(yōu)于對(duì)數(shù)比例變換法。因此,本研究認(rèn)為多波段模型法更適用于大量淺海水深快速反演流程化工作。
[Abstract]:In this paper, the advantages and disadvantages of the logarithmic proportional transformation method and the multi-band model method are compared. The purpose of this paper is to discuss the applicability of the logarithmic proportional transformation method and the multi-band model method to the rapid inversion of shallow water depth. Based on the reference data of water depth, 138 samples were randomly selected to construct the inversion model, and 100 verification points were selected randomly to evaluate the accuracy of the model. The model determination coefficient R2, inversion accuracy, robustness and applicability of the method are compared and analyzed. The results show that The average absolute error of multiband model method is 1.47 m and the average relative error is 11.67 m, which is slightly lower than that of logarithmic proportional transformation method (1.45 m), but the latter is within the range of water depth less than 1m. There is a wide range of errors in the inversion results. The accuracy of the method is obviously lower than that of the former, and the multi-band model method can be continuously optimized by the significance test of regression equation and regression coefficient, and the robustness and applicability are also obviously superior to the logarithmic proportional transformation method. Therefore, the multiband model method is more suitable for fast inversion of shallow water depth.
【作者單位】： 國家海洋信息中心/國家海洋局?jǐn)?shù)字海洋科學(xué)技術(shù)重點(diǎn)實(shí)驗(yàn)室;
【分類號(hào)】：P229

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