【摘要】：在海洋磁力測量中,波浪和風等外界因素的變化會對磁力測量數(shù)據(jù)在垂直空間上產(chǎn)生影響,而二維Taylor多項式在建立局域海洋地磁場模型時沒有考慮高度變化對模型的影響。針對這一問題,提出使用三維Taylor多項式完全展開法來構建局域海洋地磁場模型,通過模擬某海域水下球體磁場,仿真船載磁力測量數(shù)據(jù),分析兩種模型截斷階數(shù)的選擇、完全與不完全展開的區(qū)別和模型邊界效應等問題。實驗表明,在顧及高度變化的情況下,三維Taylor多項式模型能更詳細地反映海洋磁力異常的分布情況,且較好地改善了邊界效應。
[Abstract]:In the sea magnetic measurement, the change of the external factors, such as wave and wind, can influence the magnetic force measurement data in the vertical space, and the two-dimensional Taylor polynomial does not consider the influence of the height change on the model when the local marine geomagnetic field model is established. in ord to solve that problem, a three-dimensional Taylor polynomial complete expansion method is put forward to construct the local marine geomagnetic field model, and by simulating the magnetic field of the underwater sphere of a sea area, the ship-borne magnetic force measurement data is simulated, and the selection of the two model truncation orders is analyzed, And the problems of complete and incomplete expansion and model boundary effect and the like are solved. The experiment shows that the three-dimensional Taylor polynomial model can reflect the distribution of the magnetic anomaly of the ocean in more detail, and the boundary effect is better improved.
【作者單位】： 信息工程大學地理空間信息學院;地理信息工程國家重點實驗室;海軍工程大學導航工程系;
【基金】：國家自然科學基金(41574010,41274045,41476087) 地理信息工程國家重點實驗室開放基金(SKLGIE2014-M-1-1)~~
【分類號】：P714
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本文編號：2518205