| 1. | Low velocity coupled growth and banded structure of peritectic alloys under directional solidification
细晶变形镁合金的研究进展 |
| 2. | By considering the longitudinal velocity coupling effects on the other dimensions of the underwater vehicle , a motion controller is presented
根据地形跟踪的方法提出基于虚拟声纳的路径跟踪控制方法，并通过考虑纵向速度对于其他各个白由度运动的影响设计了运动控制器。 |
| 3. | Range - velocity decoupling is one of important scientific research directions . it is emphasis of the paper , too . someone presented a method of changing cycle lfmcw radars to eliminate range - velocity coupling
其中运动目标的距离速度耦合是线性调频连续波雷达一个重要的研究方向，也是本文研究的重点。 |
| 4. | Lfmcw echo is modulated by doppler frequency . according to the characteristic , moving targets with different ambiguous velocities could be classified via mtd , but the range - velocity coupling problem still exists
线性调频连续波雷达回波同脉冲雷达一样受到了多普勒频率的调制，通过动目标检测( mtd )可抑制杂波，检测运动目标。 |
| 5. | Lfmcw radar also has disadvantages of restricted detecting distance and range - velocity coupling , etc . its applications are not as wide as pulse radar . the development level of correlative theories drops behind pulse radar too
Lfmcw雷达也存在着作用距离短、运动目标距离-速度耦合等缺点,其应用远不及脉冲雷达广泛,有关理论和技术的发展水平也大大落后于脉冲雷达。 |
| 6. | Recently years , the hot research directions of signal processing concentrate on the new theories of lfmcw radar signal detection and estimation , the new methods of eliminating range - velocity coupling , etc . a series of accomplishments have been achieved
当前, lfmcw雷达信号处理的研究热点集中在目标检测与参数估计方法、运动目标距离-速度去耦合方法等方向上,并已取得一系列成果。 |
| 7. | The method first realizes detection and classification of moving targets with different ambiguous velocities via mtd in order to simplify the spectrum of beat signal , and then eliminates moving targets " range - velocity coupling with frequency domain pairing
该方法首先通过mtd实现对不同模糊速度目标的检测和分类，简化差拍信号频谱环境，然后利用频域配对法实现动目标的距离速度去耦。 |
| 8. | Based on the analysis of echo signal and ambiguity function of lfmcw radar , this dissertation advances new theories of lfmcw radar signal detection and estimation and eliminates range - velocity coupling using mtd - frequency domain pairing
在对lfmcw雷达回波信号和lfmcw雷达模糊函数进行分析的基础上,提出了lfmcw雷达目标检测与参数估计方法,并利用mtd -频域配对法消除lfmcw雷达距离-速度耦合。 |
| 9. | A discretization equation is derived by using a finite volume method in three - dimensional cylindrical polar coordinate system . algebraic equations are solved by iteration with a line - by - line method that is a combination of tdma in axial and radial directions , ctdma in tangential direction and adi method in three directions . the pressure and velocity coupling are solved with the simple algorithm
在三维圆柱坐标下，利用有限体积法推导离散方程；在轴向与径向用三对角矩阵法( tdma ) ，在周向采用循环三对角矩阵法( ctdma ) ，采用交替方向亚松弛叠代法( adi )求解方程；推导同位网格下的压力修正方程，用simple算法处理速度与压力的耦合；为加速收敛，采用适当的松弛因子。 |
| 10. | Based on the linear filter technology of random process , artificial wind speed processes are generated with the autogressive - type simulation method , which consider time and spatial correlativity . then the time history record of fluctuating wind pressures are obtained considering the velocities coupling and the added air mass
采用线性滤波器法中的自回归模型及参数识别技术模拟了多维脉动风速时程，风速转化为风荷载时考虑风与结构的速度祸合、空气附加质量等因素。 |
