ID 原文 译文
17245 然后通过最大似然估计实时估计信号和噪声的功率谱，构造Eckart滤波对自适应波束形成的输出分配不同权重进行加权滤波，从而实现频域信噪比最大化。 Then, the power spectrum of signal and noise is estimated by maximum likelihood estimation,and Eckart filter is constructed to assign different weights to the output of adaptive beamforming to maximizethe output SNR in frequency domain.
17246 所提方法通过空-频联合最优滤波，降低空域旁瓣干扰和频带内噪声的影响，使得输出信噪比最大，从而有效地改善目标宽带检测能力，提高被动声呐的宽带检测性能。 The influence of spatial sidelobe interference and noise in the frequencyband are reduced to make the output SNR maximum by the proposed method. The broadband detection abilityof the target can be effectively improved and the broadband detection performance of passive sonar isalso improved.
17247 仿真和试验数据处理结果验证了该方法的有效性。 The simulation and experimental data processing results verifiy the effectiveness of themethod.
17248 监测空间非合作目标的运动状态是空间监视的主要内容之一，也是进一步执行在轨操作的前提。 One of the main purposes for space surveillance is to supervise the movement status of non-cooperative space targets, which is also the prerequisite for further on-orbit operations.
17249 失效卫星和空间碎片等有自身旋转运动，实施维修和抓捕的关键是准确获知目标转动矢量，包括转速和转轴方向。 Because of the rotation of disabled satellites and space debris, it is necessary to accurately obtain the rotation vector, including the rotation speed and the direction of the rotation axis.
17250 该文提出了一种空间非合作目标转动矢量估计方法，同时完成目标3维成像。 This paper proposes a novel estimation method to obtainthe rotation vector of space targets, which can be simultaneously used to form the Three-Dimensional (3D)image.
17251 首先利用干涉逆合成孔径雷达(InISAR)成像技术获得目标散射点的3维位置坐标以及有效转动矢量估计，然后利用微多普勒特征提取估计目标的总转速，继而通过联合有效转动矢量和总转速估计沿雷达视线方向上速度矢量未知的分量，求得目标的总转动矢量。 Firstly, the three-dimensional position coordinates and the effective rotation vector are obtained by theInterferometric Inverse Synthetic Aperture Radar (InISAR) technology. Then, the total rotation velocity isestimated by the micro-Doppler feature extraction. Finally, the total rotation vector is acquired by combiningthe effective rotation velocity and the rotation velocity along the radar Line-Of-Sight (LOS).
17252 多组仿真实验充分验证了所提方法的有效性，性能分析表明该方法可提供较准确的转动矢量估计，并可同时提供较好的3维成像结果。 The effectivenessof the proposed method is demonstrated by simulation experiments. Performance analysis shows that themethod can provide us with accurate results in both rotation vector estimation and three-dimensional imaging.
17253 广播式自动相关监视(ADS-B)技术因明码广播特点，面临较严重的电子欺骗风险。 Automatic Dependent Surveillance-Broadcast (ADS-B) technology is faces serious security risk ofspoofing due to the characteristics of broadcasting the clear text.
17254 针对延迟转发电文的检测与相应干扰台定位问题，根据ADS-B地面站接收电文的位置间隔的分布特点，该文提出利用顺序电文间瞬时速度与关注期内平均速度间的差异性检测延迟转发电文的方法。 In view of the detection of delay-forwardingmessages and the positioning of corresponding jammers, according to the distribution characteristics of theinterval between radiation positions of messages received by ADS-B ground station, a method is proposed fordetecting delay-forwarding messages by using the difference between the instantaneous velocity of sequentialmessages and the average velocity of interest of period.