ID 原文 译文
10204 针对Phased-MIMO雷达子阵单元之间的恒模正交波形优化设计问题,基于矩阵谱逼近的思想,本文提出了一种新的波形设计框架。 ‭For multi-input multi-output (MIMO) LeiDaZi Phased - array unit between the constant modulus of orthogonal waveform optimization design problems, based on the idea of matrix spectrum approximation, this paper proposes a new waveform design framework.
10205 首先假设输出信干比的需求得到划分的子阵数目,根据最大信噪比准则对子阵单元进行波束形成,提高了雷达系统的抗干扰性能; ‭First assumes that output dry ratio of the number of submatrix requirements are divided, according to the maximum SNR criterion for array beam forming unit, improve the anti-jamming performance of radar system;
10206 其次采用迭代矩阵谱逼近算法(iterative matrix spectral approximation algorithm,IMSAA)对子阵单元之间的正交波形进行优化设计,相对于multi-CAN算法,该算法能够获得更好的相关性能,而且运算效率较高,最终实现了恒模波形的优化设计。 Secondly by iterative matrix spectral approximation algorithm (iterative matrix spectral approximation algorithm, IMSAA) for array unit between the orthogonal waveform optimization design, relative to the multi - CAN algorithm, this algorithm CAN get better performance, and higher operation efficiency, finally realize the optimization design of the constant modulus waveform.
10207 仿真结果证明了算法的有效性。 ‭The simulation results prove the effectiveness of the algorithm.
10208 卫星通信中利用直接序列扩频技术具有一定的抗干扰能力,但由于扩频增益无法做到无限大,当强干扰超过系统的干扰容限时,系统传输性能将会大幅降低。 Of direct sequence spread spectrum technology in satellite communication has a certain anti-interference ability, but can't do it because of the spread spectrum gain infinite, when strong interference of the interference capacity than the system, the system transmission performance will be greatly reduced.
10209 通过变换域信号处理技术对直接序列扩频中的干扰进行检测与抑制,能够增强其抗干扰能力。 Through the transform domain signal processing technology of the interference in the direct sequence spread spectrum detection and suppression, can enhance its anti-jamming ability.
10210 小波包变换具有优异的时频域局部分析能力,非常适合用于直接序列扩频系统中干扰检测与抑制。 Wavelet packet transform has excellent time-frequency domain local analysis ability, very suitable for interference detection and suppression in direct sequence spread spectrum system.
10211 分别对规则小波包分解和最佳小波包分解进行了研究,提出了一种基于最佳小波包分解的干扰抑制新方法,通过将子带功率比与最小功率阈值相结合,实现对干扰进行定位和抑制。 Wavelet packet decomposition of the rules and the best wavelet packet decomposition was studied, is put forward based on the best wavelet packet decomposition, a new method of interference suppression, by moving the subband power ratio and the minimum power threshold, the combination of implementation is to locate and suppress the interference.
10212 仿真结果表明,所提出的算法与基于规则小波包分解的干扰抑制和传统的快速傅里叶变换算法干扰抑制相比较,性能得到显著改善,且在计算复杂度上上升极少,是提高直接序列扩频信号抗干扰能力的更有效的选择。 The simulation results show that the proposed algorithm and wavelet packet decomposition based on the rules of interference suppression and traditional fast Fourier transform algorithm, in comparison with interference suppression performance is improved significantly, and the rise in computational complexity, improve the anti-jamming ability of direct sequence spread spectrum signal is more effective.
10213 针对机电作动的飞机防滑刹车模型具有的高阶非线性及参数时变特点,提出一种基于障碍Lyapunov函数的动态面控制方法,实现对滑移率的上界约束,保障防滑刹车系统的稳定性。 In view of the electromechanical actuation model of aircraft antiskid brake with high order nonlinear and parameter time-varying characteristics, puts forward a kind of dynamic surface control method, based on obstacles Lyapunov function for the sliding rate of the upper bound constraint, guarantee the stability of the anti-skid braking system.