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- Doppler centroid tracking (DCT) 多普勒质心法
- doppler centroid tracking 多普勒质心跟踪
- A new method to estimate Doppler centroid and Doppler rate applicable to real flight condition is proposed. 该方法设置飞机速率和脉冲重复频率比为常数，保证方位向接收信号均匀空间取样，使用实时最小二乘拟合算法。
- The inaccurate Doppler centroid estimation can evidently degrade the quality of SAS image. 不准确的多普勒中心估计会显著降低合成孔径声纳图像质量。
- The original centroid tracking algorithm is no longer suitable because of the speckle noise in ladar image. 然而常规形心跟踪算法因激光雷达图像受到散斑噪声影响而变得不适合。
- A method of estimating Doppler Centroid of spaceborne SAR with the spectrum nalysis of noise model is proposed in this paper,and its performance is compared with traditional ones using the Seasat A real echo data. 本文提出了采用噪声模型的谱分析来估计合成孔径雷达的多普勒质心的方法，并用Seasat－A回波数据对该方法与传统方法的估计性能进行了比较。
- This method is able to estimate precisely the initial Doppler frequency and the Doppler centroid, and to distinguish between multiple targets lying in the same line in the time-frequency plane. 该方法能够以较高精度估计目标的多普勒起始频率和中心频率，并能分辨在时频平面位于同一直线的多个目标。
- SAR Doppler centroid estimator using primary point information 基于强点信息的SAR多普勒中心估计算法
- A NEW STUDY FOR THE DOPPLER CENTROID FREQUENCY ESTIMATE FROM THE SAR ECHOES 星载SAR的多普勒中心频率估计的新探索
- Our pilotless rocket enters the track of the earth. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- This rough track will soon be a metalled road. 这条坑坑洼洼的路不久就要铺上碎石了。
- I'm trying to track down my old Aunt Maud. 我正试图寻找到我那年迈的婶婶莫德。
- The cyclist went at full sail along the track. 自行车手沿着跑道全速前进。
- Bill has a feeling he is on a fast track. 比尔感觉到他正快速迈向成功。
- The new race track is nearly six miles in extent. 这条新跑道将近六英里长。
- Doppler centroid real-time estimation and its hardware implementation for air-borne SAR 机载SAR实时多普勒中心估计原理及硬件实现
- Tracking wild animals requires great stealth. 跟踪野生动物必须悄然无声。
- TWO IMPROVED DOPPLER CENTROID ESTIMATION TECHNIQUES IN IMAGING THROUGH DOPPLER BEAM SHARPENING 机载雷达成像中的两种改进多普勒质心估计算法
- John bears the bell in all track events at school. 约翰在学校里的各个径赛项目中都赢得第一名。
- I'm on the track of a valuable painting. 我在追寻一幅珍贵的油画。
