ID 原文 译文
18605 再对虚拟衍射面光波用球面波照射后作正向衍射计算,通过改变观测平面位置可重建出不同放大率的原始图像。 and then theforward diffraction calculation is carried out after the virtual diffraction wave is irradiated by spherical wave.The original images with different magnification can be reconstructed by changing the position of theobservation plane.
18606 仿真测试结果表明,与一般的插值放大方法相比,所获得的放大后的图像特别是在显著性区域表示出良好的视觉感知效果。 The simulation results show that compared with the general interpolation method, the magnified image shows a good visual perception effect, especially in the saliency region.
18607 将包含人脸的低分辨率降质图像作为待重建信号,所重建人脸的显著性区域如眼睛、鼻子等比一般重建方法更清晰。 When the degraded face image is used as the signal to be reconstructed, the significant areas such as eyes and nose are clearer than the general method.
18608 用水平集方法结合显著图分割出原始图像中的局部显著区域并作放大重建和轮廓提取,轮廓表现出良好的光滑性。 The local salient region in the original image is segmented by the level set method combinedwith salient map, and the magnification and contour extraction are performed. The contours show good smoothness.
18609 为了解决行波管(TWT)宽带数字预失真(DPD)中反馈回路ADC采样率过高的问题,该文利用信号的循环平稳特性证实可通过欠采样下的输出信号估计功放的非线性模型参数, In order to reduce the sampling rate of the Traveling Wave Tube (TWT) of the Analog to DigitalConverter (ADC) in the feedback loop of Digital PreDistortion (DPD), the nonlinear parameters of the poweramplifier model are proved to be estimated with the undersampled output signal based on the cyclostationaryof digital modulation signal.
18610 然后由功放非线性模型参数和输入信号可恢复出与高采样率下效果相似的功放输出信号, The output signal similar to high sampling rate can be obtained by combining thenonlinear parameters of the power amplifier model with the input signal.
18611 最后通过传统的间接学习结构对功放进行数字预失真以实现行波管的线性化。 The DPD of the power amplifier is implemented through indirect learning architecture.
18612 为了验证该方法,利用20 MHz LTE信号驱动一只55 W的X波段行波管放大器(TWTA)。 To validate the method, a 55 W X-band Traveling WaveTube Amplifier (TWTA) is driven by a 20 MHz LTE signal.
18613 数字预失真反馈回路的ADC采样率从61.44 Msps降低至6.144 Msps和3.072 Msps,但线性化效果变化不大,表明欠采样方法是有效的。 The sampling rate of ADC in the DPD feedback loop is reduced from 61.44 Msps to 6.144 Msps and 3.072 Msps, but the linearization effect has little change, which shows the validation of the undersampling method.
18614 由于多径和非同源等因素的影响,传统基于蓝牙信号强度的室内定位方法的性能精度和稳定性都不高。 Due to the influence of many factors such as multipath and multi-source, the traditional indoorlocalization algorithms based on Bluetooth signal strength have low performance in accuracy and stability.