ID |
原文 |
译文 |
19235 |
与现有方法相比,所提方法解决了深度卷积混合下模型失效的问题,并且当源信号数较多或存在加性噪声时,可以得到更好的分离性能。 |
Compared with theexisting methods, this method solves the problem of model failure under deep convolution mixing, and canobtain better separation performance when the number of source signals is large or additive noise exists. |
19236 |
仿真结果验证了方法的有效性和性能优势。 |
The simulation results verify the effectiveness and performance advantages of the proposed method. |
19237 |
脉冲多普勒(PD)雷达能够检测目标多普勒频率和有效抑制杂波,该优势使得PD雷达得到了广泛应用。 |
It makes the Pulse Doppler (PD) radar widely applied that the PD radar has the obvious advantagesof detecting the Doppler frequency of the target and suppressing the clutter effectively. |
19238 |
但速度模糊的存在,往往对PD目标检测带来困难。 |
However, it is difficultfor the PD radar to detect the target due to velocity ambiguity. |
19239 |
该文紧密结合PD雷达体制的特点,在基于PD雷达参差重频模式下,提出一种基于全相位离散傅里叶变换(DFT)相位差频谱校正的最优余数封闭式鲁棒中国余数定理(CFRCRT)的多普勒频率估计算法。 |
Combining with the characteristic and stagger-period model of the PD radar, a Doppler frequency estimation method based on all phase DFT Closed-FormRobust Chinese Remainder Theorem (CFRCRT) with spectrum correction is proposed. |
19240 |
理论分析和仿真实验表明该文算法在测量精度和实时性能上可以满足工程上应用的需求。 |
Both theoretical analysis and simulation experiment demonstrate that the proposed method can satisfy the engineering demand in measure accuracy and real-time performance. |
19241 |
该文设计了一种基于3种反射型单元共享孔径的新型宽带低RCS超表面反射屏,与传统人工磁导体反射屏相比,引入一种相量干涉单元,利用新型相位对消关系完成了对传统人工磁导体(AMC)反射屏相位对消频带的拓展。 |
A novel wideband low RCS new super-surface array based on three reflective cell shared aperture is designed, which is composed of three kinds of Artificial Magnetic Conductor (AMC). Compared with thetraditional AMC array, the new array uses one of AMC as phasor interference unit. A new phase cancellation relation is presented, the new phase cancellation relation is used to extend the traditional array phase cancellation band. |
19242 |
通过将3种反射单元交错排布,合理设计阵列使其满足新型相位对消条件,并进一步优化单元结构参数,实现了阵列RCS缩减和缩减带宽的拓展。 |
Then, the parameters of the cell structure are further optimized to realize the reduction of RCS and the improvement of bandwidth. The physical sample is processed and tested. |
19243 |
在不同极化波垂直入射条件下,新型阵列均有较好的低散射性能。 |
It is shown that the new array can overcome the defect of the discontinuous operating band of the traditional array and has broadband low scattering characteristics. |
19244 |
仿真与实测结果表明:在5.2~13.9 GHz范围内后向RCS缩减量达到10 dB以上,相对带宽达到91%,为宽带低RCS反射屏设计提供了新的方法。 |
The results of simulationand field test show that: the backward reduction of RCS in the range of 5.2~13.9 GHz reaches more than 10dB, and the relative bandwidth reaches 91%. |