雷體坐標系 的英文怎麼說
中文拼音 [léitǐzuòbiāoxì]
雷體坐標系
英文
body axes coordinate system of torpedo body-
Due to the moving base existence of the minehunting and the frame structure characteristic of the sonar array, a new modeling thought in which the boat body coordinates is regarded as moving coordinates and the whirligig equation of sonar array compared with the self coordinates is founded on the basis of the euler ' s theorem and the coordinate transform is introduced. the dynamic equations of minehunting sonar array with the state matrix form are founded by settling the dynamic models with the vector form. so it offers theory foundation for analyzing the dynamic characteristic and designing robust control
由於獵雷艇作為動基座的存在和聲納基陣的框架結構特點，提出了以艇體坐標系為運動坐標系，運用變形的歐拉定理和坐標變換建立聲納基陣相對自身坐標系的旋轉運動方程的建模思想；將所建立的矢量形式的動力學模型展開整理，獲得了狀態矩陣形式的獵雷聲納基陣動力學方程，為系統動力學模型的實用化奠定了基礎。The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering
本文從星載雷達的星地幾何關系入手，舍棄傳統星載合成孔徑雷達研究中的球地球模型和圓軌道模型，研究了在地球橢球模型和橢圓軌道模型下由雷達天線確定目標坐標的方法，並在此基礎上研製了星載合成孔徑雷達系統設計與模擬軟體，完成雷達系統天線尺寸、脈沖重復頻率、信號帶寬、雷達信號數據率、雷達發射功率、衛星平臺的偏航牽引等幾個方面的系統參數設計以及雷達多普勒特性、雷達系統模糊、雷達定位及精度的分析，最後完成雷達回波信號的模擬。In rotating frame of reference, the construction method of three dimensional finite volume tvd schemes is systemically analyzed, in which implicit euler defiference is applied for time discretization
在旋轉坐標系下，發展了一種含旋轉源項的雷諾平均navier - stokes方程的三維有限體積tvd格式，時間離散採用隱式euler方法。Analyzing the materials, decide on the application of reynolds time - averaged control equations and k - e two - equation turbulent mode, and using bfc, staggered grid to disperse the n - s control equation with fvm
採用工程實際應用廣泛的湍流模型即基於雷諾時均方程和k -雙方程湍流模型，採用貼體坐標和交錯網格系統對n - s方程用有限體積法進行離散。分享友人