本文選題：海洋磁力測量 + 測圖比例尺與圖幅�。� 參考：《中國地質(zhì)大學(北京)》2015年碩士論文

【摘要】：本文針對目前我國海洋磁力測量技術(shù)設(shè)計中的相關(guān)關(guān)鍵技術(shù)展開探討和研究,嘗試提出測圖比例尺確定與圖幅劃分的方法;探討船磁影響的測定方法,給出船磁影響校正值得計算方法;并對測線布設(shè)這一技術(shù)設(shè)計關(guān)鍵技術(shù)展開了重點研究,提出了測線方向和測線間距的確定方法,并通過仿真和實測數(shù)據(jù)對方法的有效性和可行性進行了驗證。本文的研究完善了海區(qū)技術(shù)設(shè)計的內(nèi)容,可以為我國規(guī)范化獲取高精度海洋磁場信息提供理論依據(jù)。本文的研究成果和創(chuàng)新點有:(1)系統(tǒng)總結(jié)了國內(nèi)海洋磁力測量技術(shù)設(shè)計方面的研究進展,指出了海區(qū)技術(shù)設(shè)計方面存在的問題和解決思路;(2)測圖比例尺直接關(guān)系著測量成果圖的準確程度、地磁場分布的詳細程度以及測量工作效率,給出了測圖比例尺選擇的原則,提出了解析法圖幅劃分,該法適用于同一比例尺對沿岸開闊海域、近海、遠海測區(qū)進行分幅或在圖解法劃分圖幅的過程中用基礎(chǔ)比例尺標準圖幅劃分;(3)建立了測船磁化模型,分析了船尾磁場的變化規(guī)律,研究表明:船尾磁場隨著航向角的不同而變化,并且當航向角為0°或180°時,船尾磁場強度最大,此時其對海洋磁力測量的影響也最大。進一步完善和規(guī)范了船磁八方位試驗及拖纜長度和拖放深度的試驗方法;(4)船磁影響校正值的計算方法中,傅立葉級數(shù)法的擬合效果要優(yōu)于四航向法,建議在海洋磁力測量中使用;(5)測線方向應(yīng)盡量沿測區(qū)磁異常總梯度方向或垂直于磁異常等值線方向布設(shè),并綜合考慮其它因素影響;建立了內(nèi)插磁測值精度與測線間距的關(guān)系,通過磁測誤差常差和磁測比例誤差系數(shù)來確定測線間距,結(jié)合《要求》規(guī)定,給出我國海洋磁力測量測線間距選擇方案。
[Abstract]:In this paper, we discuss and study the relevant key technologies in the design of marine magnetic measurement technology in China, try to put forward the method of determining the scale of surveying map and dividing the map, and discuss the method of measuring the influence of ship's magnetic field. The calculation method of ship magnetic impact correction is given, and the key technology of line layout is studied, and the method of determining the direction and spacing of surveying line is put forward. The validity and feasibility of the method are verified by simulation and measured data. The research in this paper has perfected the content of the technical design of the sea area and can provide the theoretical basis for the standardization of obtaining the high precision marine magnetic field information in our country. The research results and innovations of this paper include: 1) the research progress in the design of marine magnetic measurement technology in China is summarized systematically. This paper points out the problems existing in the technical design of the sea area and the solution to the problem. The scale of surveying map is directly related to the accuracy of the surveying result map, the detail degree of geomagnetic field distribution and the efficiency of surveying work. The principle of selecting the scale of surveying map is given. In this paper, an analytical method for map partition is put forward. This method is suitable for dividing the offshore, offshore and far-sea survey areas on the same scale, or using the basic scale standard map to divide the map in the process of drawing the map, and establishes the magnetization model of the survey ship. The variation law of the stern magnetic field is analyzed. The results show that the stern magnetic field varies with the heading angle, and when the heading angle is 0 擄or 180 擄, the strength of the stern magnetic field is the largest, and the influence on the measurement of ocean magnetic force is also greatest. In further perfecting and standardizing the methods for calculating the magnetic effect correction values of the ship's magnetic effects, the Fourier series method is better than the four-course method in the calculation of the magnetic influence correction values of the ship. The test methods of the eight-azimuth test and the length and depth of the towing cable are further improved and standardized. It is suggested that the direction of the line should be arranged as far as possible along the direction of the total gradient of magnetic anomaly or perpendicular to the isoline of the magnetic anomaly, and other factors should be considered synthetically, and the relationship between the precision of the interpolated magnetic value and the distance between the measured lines is established. The distance between the measured lines is determined by the constant deviation of the magnetic measurement error and the coefficient of the proportional error of the magnetic measurement. Combined with the stipulation of "requirements", the selection scheme of the distance between the measured lines of the marine magnetic force measurement in China is given.
【學位授予單位】：中國地質(zhì)大學(北京)
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P631.224

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本文編號：2027617