| ID | 原文 | 译文 |
| 54957 | 在时域信号处理部分,通过信号子块循环移位实现备选序列的增加;在空间域部分,利用天线间信号子块交换实现峰均功率比(peak to average power ratio,PAPR)抑制。 | In the time domain signal processing part, through the cyclic shift alternative sequence of signal increases;Part in spatial domain, using antenna signal sub-block exchange between peaks are power ratio (PAPR) peak to average power thewire, inhibit. |
| 54958 | 同时在接收端,利用子块相位旋转引起的相位差异,本方法通过比较接收信号与星座点的距离,可以实现信号的盲检测,从而有效提高MIMO-OFDM系统的频谱利用率。 | At the receiving end at the same time, the use of phase difference, the phase rotation caused of this method by comparing the received signal and the constellation point distance, can realize blind detection of the signal, thus effectively improve the utilization rate of spectrum of MIMO - OFDM system. |
| 54959 | 仿真结果表明,提出的方法能有效地抑制MIMO-OFDM信号的PAPR,而且明显降低了传统PTS算法的计算复杂度,同时可获得跟传统PTS方法已知边带副信息时相似的比特误码率(bit error rate,BER)性能。 | The simulation results show that the proposed method can effectively restrain the MIMO - OFDM signal PAPR, and significantly reduce the computational complexity of the traditional PTS algorithm, at the same time can be obtained with traditional PTS method known sideband vice information similar bit error rate (bit error rate and BER) performance. |
| 54960 | 空时自适应处理算法能够增强全球定位系统接收机的抗干扰性能,但是通过对均匀线阵和均匀圆阵进行理论分析发现,当强干扰信号垂直于天线阵组成的平面时,使得接收信号协方差矩阵奇异,不能计算最优权值,因而对特定方向的强干扰无法有效抑制。 | Space-time adaptive processing algorithm can enhance the anti-jamming performance of global positioning system (GPS) receiver, but through the uniform linear array and uniform circular array theory analysis found that when strong interference signal is perpendicular to the plane of antenna array, the received signal covariance matrix is singular, cannot calculate the optimal weights and therefore the specific direction of unable to restrain the strong interference. |
| 54961 | 为了防止这种情况的出现,构建了基于立体结构的7单元天线的双正四面体阵,该阵型有效地减少了各天线共面情况的出现。 | In order to prevent the occurrence of this kind of situation, constructed based on the three-dimensional structure of the double regular tetrahedron unit 7 antenna array, this system effectively reduce the occurrence of each antenna coplanar condition. |
| 54962 | 仿真结果表明,新阵型不仅可以有效检测特定方向的强干扰,而且具有更好的天线方向图和捕获性能。 | Simulation results show that the new system not only can effectively detect the specific directions of strong interference, and has better antenna pattern and capture performance. |
| 54963 | 飞行器非线性动力学模型通常包含由未知外界干扰和未建模动态构成的非匹配不确定性。 | Nonlinear dynamic model of aircraft usually contains composed of unknown disturbance and unmodeled dynamics mismatched uncertainty. |
| 54964 | 针对建立的飞行器纵向运动仿射非线性模型,提出了一种基于非线性干扰观测器(nonlinear disturbance observer,NDO)的自适应反推非奇异终端滑模(adaptive backstepping nonsingular terminal sliding mode,AB-NTSM)轨迹跟踪控制方法。 | To build the aircraft longitudinal motion of affine nonlinear model, is proposed based on a nonlinear disturbance observer (nonlinear disturbance observer, NDO) adaptive backstepping nonsingular terminal sliding mode (the adaptive backstepping nonsingular terminal sliding mode, AB - NTSM) trajectory tracking control method. |
| 54965 | 设计非线性干扰观测器对未知干扰进行观测补偿,无需干扰上界先验知识。 | Design of nonlinear disturbance observer on the unknown disturbance compensation, the upper bound prior knowledge without interference. Design unmodeled dynamic adaptive law and improve the robustness of the controller on the system uncertainty. |
| 54966 | 设计未建模动态自适应律,提高控制器对系统不确定性的鲁棒性。对3种不同情况的仿真表明,干扰观测器能够实现对不同干扰精确观测,仅在干扰突变时有较大观测误差。 | For three different circumstance of simulation show that the disturbance observer can achieve accurate observation of different interference, mutations in only the interference large observation error. |