磁梯度計 的英文怎麼說
中文拼音 [cítīdùjì]
磁梯度計
英文
gradometer-
In this application, the lorentz force generated by the interaction between the current in the wire and the geomagnetic field produces an electro - dynamic drag leading to a fast orbital decay. in this paper, we make an intensive study of the process of de - orbiting using electro - dynamic tether system. the concrete work includes : firstly, i have studied the basic principle of how to generate the electro - dynamic drag, modeled via accuracy geomagnetism, made a concrete analysis of the de - orbiting duration, the magnitude and direction of electro - dynamic drag under the action of the dipole and accurate geomagnetic models, set up a counterbalance between electro - dynamic torque and gravity gradient torque, emulate the de - orbiting process of spacecraft, and compared the change of six orbital factors and the de - orbiting duration under the action of the dipole and accurate geomagnetic models
本文對基於電動力纜繩的航天器離軌過程進行了深入研究，具體工作如下:首先，本文研究了電動力纜繩產生電動力拉力的基本原理，建立了精確地磁場模型;分別在偶極子模型和精確地磁場模型作用下，對電動力拉力的大小、方向、離軌時間及電動力纜繩傾角的大小進行了計算分析;建立了電動力力矩與纜繩系統重力梯度力矩的平衡關系;分析了電動力力矩為系統提供能量的原理;最後分別在偶極子地磁場模型和精確地磁場模型作用下，對受電動力纜繩作用的航天器的離軌過程進行模擬，分析了在不同精度地磁場模型下，航天器離軌過程中各軌道參數的變化情況，並比較了不同模型對離軌時間的影響。In part three, the physical and chemical properties of core - shell nanoparticles have been characterized by using transmission electronic microscopy, atomic force microscopy, zetasizer and alternating grade magnetometer
第三，採用透射電子顯微鏡、原子力顯微鏡、 zeta電位分析儀、交流梯度磁場計等儀器對該類納米顆粒的物理化學性質進行了表徵。By comparing the aeromagnetic gradient data with the total field data, it can conclude that ; relative to aeromagnetic t, the gradient abnormality is more visible and it can be used to define the boundary of the magnetic bodies and the position of the fracture structure which could provide more information, especially the measured vertical gradient contain more abundant information than the calculated vertical 1st derivative
通過對航磁梯度和航磁總場資料的對比，發現航磁梯度場相對航磁t總場而言，異常更加明顯；航磁梯度能更準確地確定磁性體的邊界和斷裂構造的位置，提供更多總場沒有的信息，特別是實測的垂向梯度比計算的垂向一階導數提供的信息更加豐富。Magnetic anomaly detection is a kind of magnetic technology of target - detection. it is developed with the progress of magnetic sensors, which is based on the phenomena that ferrous objects disturbs the magnetic lines of force of the earth. so we can gain the neccesary informatin of the target through processing the data of the magnetic anomaly signatures. this technology has a wide perspective in the future. this paper will study the technoly of mad through a lot of experiment. the platform for the experiment is made
本論文通過大量實驗對磁異信號目標探測技術進行了研究，研製了磁異信號目標探測技術試驗平臺，利用amr磁阻傳感器開發了提取磁異信號特徵量?磁梯度計，並基於磁場梯度計通過實驗對模擬磁性目標的磁異常場的分佈進行了研究，用圖示法將其分佈特徵表現出來，發現了磁異信號測量的最佳角度，並給出了理論分析和結論。In the computation procedure of the above problems, efficient algorithms to perform sparse matrix were applied to saving computer memory units and cpu time. the conjugate gradient method and biconjugate gradient method were applied to solve the sparse systems of generated linear equations
為了減少計算機內存的需求和有效提高計算速度，本文在分析計算各類目標的電磁散射和輻射問題時，採用稀疏矩陣的存儲和壓縮技術，並運用共扼梯度和雙共轆梯度等方法求解線性方程組。分享友人