ID 原文 译文
23025 理论分析和仿真结果验证了所提方法的有效性，尤其是对于符合 Nyquist 采样的大坡度区域，该方法有很好的滤波和解缠效果。 The effectiveness of the proposed method is verified by theoretical analysis and simulation. Especially for the large gradient region conforming Nyquist sampling, this method has good filtering and unwrapping effect.
23026 该文提出的方法不需要增加额外数据，实现简单，运算速度快，可应用于干涉合成孔径雷达的地面处理系统中。 The method proposed does not need extra data, is simple to implement and fast in operation, and can be applied to the ground processing system of interferometric SAR.
23027 顺轨干涉 SAR 海面复图像通常利用静止陆地参考点进行配准，获得精确有效的海洋流场干涉相位信息。 In order to get high-precision interferogram of ocean surface current, static control points from land area are normally used to coregistrate ocean surface complex images of along-track interferometric SAR.
23028 复图像中无参考点时，仅能依据海浪纹理进行配准，受海面随机运动以及低信噪比的影响，配准像素偏移往往会出现像素级误差，并导致干涉相位图质量严重下降。 When there is no control point in the image, ocean wave texture can only be used instead. Under the influence of stochastic movement and low signal-to-noise ratio of the ocean, the coregistration error tends to exceed one pixel, hence damages the quality of interferogram severely.
23029 根据大尺度海浪变化周期较长，在干涉成像间隔内可视作静止这一特征，该文提出保留大尺度海浪对应的方位谱分量以提高数据信噪比和相关性，进而提高配准精度的方法，并选用海面实际方位分辨率作为大尺度海浪方位谱选取范围的约束条件。 Since the period of large-scale wave is much longer than the interferometric interval, large-scale wave can be treated as static during the interval. Based on this matter of fact, this paper proposes a coregistration method by reserving the spectrum of large-scale wave to improve the signal-to-noise ratio and correlation coefficient, further improving the coregistration precision. Ocean azimuth resolution is used as the criterion to decide which part of the spectrum should be reserved.
23030 通过机载顺轨干涉 SAR 实验数据证明，所提方法可有效提高无参考点海面复图像的配准精度。 Airborne along-track interferometric SAR data is demonstrated here, proving the proposed method can improve the coregistration precision of ocean surface complex images without control point.
23031 针对现有的 M 通道过采样图滤波器组整体性能较差的问题，该文提出一种过采样图滤波器组设计的新算法。 This paper presents an efficient algorithm to design M-channel oversampled graph filter banks with better overall performance.
23032 在新算法中，分两步来设计图滤波器组。 In the new algorithm, a two-step scheme is exploited to tackle the design task.
23033 首先，从频谱特性方面考虑来设计分析滤波器，以分析滤波器的通带波纹和阻带能量为目标函数，以 3 dB 约束为约束条件，通过半正定规划求解出频谱选择性较好的分析滤波器； Firstly, for controlling the spectral selectivity, the analysis filter is designed by solving a constraint optimization problem that minimizes the passband ripple and stopband energy subject to 3 dB constraint;
23034 然后，从完全重构特性方面考虑来设计综合滤波器，以综合滤波器的阻带能量为目标函数，以完全重构条件为约束函数。 secondly, by taking the Perfect Reconstruction (PR) condition into account, the design problem of synthesis filters is formulated into an optimization problem that minimizes the stopband energy subject to PR constraint.