本文選題：數(shù)字航道 + 多維航道模型��； 參考：《大連海事大學(xué)》2015年博士論文

【摘要】：隨著我國(guó)航運(yùn)業(yè)和航道建設(shè)的發(fā)展,以及地理空間數(shù)據(jù)應(yīng)用研究的發(fā)展,內(nèi)河航道信息化建設(shè),尤其是航道測(cè)繪的地理空間數(shù)據(jù)的應(yīng)用,取得了極大的進(jìn)步�？臻g信息應(yīng)用作為數(shù)字航道研究的重要內(nèi)容,可以為船舶用戶和監(jiān)管部門(mén)提供航道實(shí)時(shí)的動(dòng)態(tài)信息。因此,更高效、更豐富的航道空間數(shù)據(jù)模型及其應(yīng)用系統(tǒng)對(duì)于船舶用戶和監(jiān)管部門(mén)具有重要的意義。在長(zhǎng)江南京航道局“多維數(shù)字航道基礎(chǔ)平臺(tái)關(guān)鍵技術(shù)研究”科技項(xiàng)目的資助下,本文開(kāi)展了多維數(shù)字航道空間信息應(yīng)用研究,在理論方法和工程應(yīng)用中探索多維數(shù)字航道的空間數(shù)據(jù)模型及其應(yīng)用關(guān)鍵技術(shù),完成了以下七個(gè)方面的研究工作：(1)為了提供更加豐富的數(shù)字航道空間信息,有別于傳統(tǒng)的二維電子航道圖,本文分析了數(shù)字航道的不同空間數(shù)據(jù)類(lèi)型包括測(cè)深信息、導(dǎo)航標(biāo)志、岸上地形信息、沿岸建筑物和基礎(chǔ)設(shè)施等信息的多維表達(dá)方式,設(shè)計(jì)了以二三維多源空間信息融合為基礎(chǔ)的多維航道模型。(2)基于多維航道模型設(shè)計(jì),針對(duì)其水下地形的三維空間表達(dá)問(wèn)題,提出了多分辨率水下地形構(gòu)建算法。首先,構(gòu)建了陸上地形金字塔數(shù)據(jù)模型,設(shè)計(jì)了地形數(shù)據(jù)與水深數(shù)據(jù)融合的閾值計(jì)算方法；然后,采用分層距離加權(quán)平均的方法逐層進(jìn)行數(shù)據(jù)融合,將陸上地形數(shù)據(jù)與水深數(shù)據(jù)相融合。(3)基于多維航道模型設(shè)計(jì),針對(duì)其在三維空間中多比例電子航道圖與遙感影像和水下三維地形的融合問(wèn)題,提出了多比例尺電子航道圖數(shù)據(jù)融合算法。在三維場(chǎng)景中,研究了多比例尺電子航道圖數(shù)據(jù)與遙感影像數(shù)據(jù)和水下地形數(shù)據(jù)融合的具體流程,包括多比例尺電子航道圖數(shù)據(jù)的視相關(guān)可視化方法,電子航道圖圖幅處理的順序問(wèn)題、圖幅裁剪和圖幅拼接的方法,電子航道圖中物標(biāo)的繪制方法,以及物標(biāo)的拾取方法等。(4)三維模型能表達(dá)更加豐富的空間信息,為了更高效和精確地將三維模型融合到多維航道模型中,本文提出了基于矢量數(shù)據(jù)的三維模型數(shù)據(jù)融合算法。首先,給出了三維模型的描述方法,定義了用于三維模型投影計(jì)算的簡(jiǎn)單網(wǎng)格的概念,設(shè)計(jì)了相交測(cè)試方法、通用逆時(shí)針排序算法和輪廓提取算法等；然后,基于上述基本概念和計(jì)算方法研究了三維模型基于矢量數(shù)據(jù)的融合流程,包括姿態(tài)調(diào)整、大小調(diào)整和位置匹配。(5)針對(duì)當(dāng)前的航道空間數(shù)據(jù)應(yīng)用習(xí)慣,研究了多維航道模型的Mercator變換,將多維航道模型在球面坐標(biāo)和Mercator投影場(chǎng)景坐標(biāo)之間進(jìn)行變換,并對(duì)變換方法進(jìn)行了分析。(6)基于多維航道模型,參照二維電子航道圖系統(tǒng)、三維數(shù)字地球系統(tǒng)和數(shù)字航道相關(guān)業(yè)務(wù)系統(tǒng),設(shè)計(jì)了多維航道基礎(chǔ)平臺(tái)的功能結(jié)構(gòu)和系統(tǒng)架構(gòu),并研究了多維航道模型繪制相關(guān)的多圖層技術(shù)、視點(diǎn)相關(guān)LOD可視化技術(shù)、異步多線程方法、數(shù)據(jù)調(diào)度的預(yù)讀策略以及基于視點(diǎn)和視角的模型轉(zhuǎn)換和隱藏方法等,構(gòu)建了多維航道基礎(chǔ)平臺(tái)。(7)將多維航道基礎(chǔ)平臺(tái)應(yīng)用于船舶導(dǎo)航和航道監(jiān)控。針對(duì)多維航道模型中船舶等動(dòng)態(tài)目標(biāo)的繪制和信息查詢需求,提出了動(dòng)態(tài)目標(biāo)的折半抽稀、多細(xì)節(jié)層次目標(biāo)符號(hào)的繪制方法以及基于光線投射思想的目標(biāo)拾取方法。設(shè)計(jì)開(kāi)發(fā)了多維航道監(jiān)控應(yīng)用系統(tǒng),實(shí)現(xiàn)基于多維航道模型的航標(biāo)、水位和船舶監(jiān)控；設(shè)計(jì)開(kāi)發(fā)了多維船舶導(dǎo)航應(yīng)用系統(tǒng),實(shí)現(xiàn)多維航道模型中的船舶導(dǎo)航功能�；谏鲜鲅芯�,為數(shù)字航道構(gòu)建了一個(gè)新的空間數(shù)據(jù)組織模型,并在船舶導(dǎo)航和航道監(jiān)控應(yīng)用研究中證明了模型的有效性。
[Abstract]:With the development of China's navigation and navigation and waterway construction, as well as the development of geospatial data application research, the application of inland waterway information construction, especially the application of geospatial data in navigation channel mapping, has made great progress. As the important content of digital channel research, space information application can be provided for ship users and supervision departments. Therefore, the more efficient, more abundant channel space data model and its application system are of great significance for the ship users and the supervision department. Under the help of the "key technology research" of the "multi-dimensional digital channel basic platform" of the Nanjing channel bureau of the Yangtze River, this paper has carried out the multidimensional digital channel space letter. In the study of interest application, the spatial data model of multidimensional digital channel and its key technology are explored in the theoretical method and engineering application. The following seven aspects are completed: (1) in order to provide more abundant spatial information of digital channel, different from the traditional two-dimensional electronic channel diagram, this paper analyzes the different space of the digital channel. The data types include the multidimensional expression of information such as sounding information, navigation marks, shore terrain information, coastal buildings and infrastructure and so on. The multidimensional channel model based on the fusion of two three-dimensional multi-source space information is designed. (2) based on the multi-dimensional channel model, the three-dimensional spatial expression of its underwater terrain is proposed. First, the land terrain Pyramid data model is constructed, and the threshold calculation method of terrain data and water depth data fusion is designed. Then, the layered distance weighted average method is used to fuse the data layer by layer to merge the land terrain data with the water depth data. (3) the multi-dimensional channel model is set up. In view of the fusion of multi scale electronic channel map, remote sensing image and underwater 3D terrain in three-dimensional space, a multi scale electronic channel map data fusion algorithm is proposed. In the three-dimensional scene, the concrete flow of multi scale electronic channel map data, remote sensing image data and underwater terrain data fusion is studied, including dobby. The visual correlation visualization method for the data of the ulnar electronic channel map, the sequence of Tutu amplitude processing in the electronic channel, the method of map clipping and image splicing, the drawing method of the object mark in the electronic channel map, and the pickup method of the object. (4) the three-dimensional model can express more abundant spatial information, in order to more efficiently and accurately the 3D model In the multi-dimensional channel model, this paper presents a 3D model data fusion algorithm based on vector data. Firstly, the description method of 3D model is given. The concept of simple mesh used for 3D model projection calculation is defined, intersecting test method, general inverse clockwise sorting algorithm and contour extraction algorithm are designed, and then, Based on the above basic concepts and calculation methods, the fusion process of 3D model based on vector data is studied, including attitude adjustment, size adjustment and position matching. (5) the Mercator transformation of multidimensional channel model is studied for the application habits of the current channel space data, and the multidimensional channel model is sitting in spherical coordinates and Mercator projection scenes. The transformation method is transformed and the transformation method is analyzed. (6) based on the multi-dimensional channel model, the three-dimensional digital earth system and the digital channel related business system are based on the two-dimensional electronic channel model system, and the functional structure and system architecture of the multi-dimensional channel basic platform are designed, and the multi-dimensional channel model is also studied to draw the related multi graph layer techniques. Operation, visual point related LOD visualization, asynchronous multithreading method, pre reading strategy of data scheduling, model conversion and hiding method based on view point and view, and so on. (7) multidimensional channel base platform is applied to ship navigation and channel monitoring. The demand of drawing and information query is required, the half pumping of dynamic target, the drawing method of multi detail level target symbol and the method of target Picking Based on the ray projection idea are proposed. The multi-dimensional channel monitoring and application system is designed and developed to realize the navigation mark, water level and ship monitoring based on the multidimensional channel model, and the multi-dimensional ship guide is designed and developed. The navigation function of the multidimensional channel model is realized by the navigation application system. Based on the above research, a new spatial data organization model is built for the digital channel, and the validity of the model is proved in the research on the application of ship navigation and channel monitoring.

【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：U612

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