ID 原文 译文
20585 该文针对地球同步轨道合成孔径雷达(GEOSAR)提出一种新的2维俯仰–滚动姿态导引方法，可有效解决传统2维偏航导引方法用于GEOSAR时大偏航角的问题，更适用于具有大功率、大天线和大转动惯量的GEOSAR卫星。 A new prompt 2-D attitude steering approach for zero Doppler centroid of GEOsynchronous SAR(GEOSAR) is proposed. Large yaw angle of GEOSAR in traditional 2-D yaw steering condition can be solvedby this method. It is suited to the large satellite such as GEOSAR. The GEOSAR can achieve broadsideimaging when this method is applied.
20586 相较于传统导引方法，该方法将卫星机动角度和时间减小至1/10左右，可大幅降低GEOSAR工程实施难度。 Compared to the traditional attitude steering approach, the steering angle and time are just 1/10 of it, and the developing difficulty of GEOSAR becomes lower through this new method. This approach is propitious to GEOSAR.
20587 该方法应用于不同轨道高度的SAR卫星时，均可实现残留多普勒中心值为0，具有普适性。 When it is employed to SAR satellites with differentaltitudes, the residual Doppler centroid is accurate zero in all the conditions.
20588 此外，针对不同轨道高度SAR卫星，该文提出了姿态导引方法选择的参考依据。 Besides, an attitude selectionreference standard is illustrated for different altitude orbital satellites.
20589 一致迭代硬阈值(CIHT)算法在处理音频截幅失真中具有较好的性能。但是，在截幅程度较大时音频截幅修复的性能会下降。因此，该文提出一种基于自适应门限的改进算法。 Audio clipping distortion can be solved by the Consistent Iterative Hard Thresholding (CIHT) algorithm, but the performance of restoration will decrease when the clipping degree is large, so, an algorithm based on adaptive threshold is proposed.
20590 该算法自动估计音频信号截幅程度，根据估计的截幅程度信息，自适应调整算法中的截幅程度因子。 The method estimates automatically the clipping degree, and thefactor of the clipping degree is adjusted in the algorithm according to the degree of clipping.
20591 与近年来提出的CIHT算法和一致字典学习算法(CDL)相比，该文所提算法能更好地重建音频信号，特别在音频信号截幅失真严重的情况。 Compared with the CIHT algorithm and the Consistent Dictionary Learning (CDL) algorithm, the performance of restoration by the proposed algorithm is much better than the other two, especially in the case of severe clipping distortion.
20592 该算法的运算复杂度与CIHT相近，与CDL相比，拥有更快的运行速度，有利于实时实现。 Compared with CDL, the computational complexity of the proposed algorithm is low like CIHT, compared with CDL, it has faster processing speed, which is beneficial to the practicality of the algorithm.
20593 针对在非协作通信以及低信噪比下组合二进制偏移载波(CBOC)信号伪码周期和组合码序列较难估计的问题，该文提出了2次谱算法与基于径向基函数(RBF)神经网络算法。 For the problems of the Composite Binary Offset Carrier (CBOC) signal pseudo code period and combination code sequence are difficult to estimate in a non-cooperative context, two blind methods are proposed based on power spectrum reprocessing and Radial Basis Function (RBF) neural networks.
20594 对输入信号进行2次功率谱计算，可以得到CBOC信号的伪码周期。 It can get the CBOC pseudo code period through two power spectrum calculations.