ID 原文 译文
7224 为了解决积分滑模开关项高增益系数引起的抖振问题,设计了滑模扰动观测器来估计目标的机动加速度。 In order to solve the integral sliding mode switching chattering problem caused by high gain coefficient, a sliding mode perturbation observer is designed to estimate the target maneuvering acceleration.
7225 结合非线性积分滑模制导律,引入目标加速度的估计值,设计出一种复合制导律。 Combined with the nonlinear integral sliding mode guidance law, the introduction of target acceleration estimation, design a kind of composite guidance law.
7226 结果表明,该复合制导律能有效地消除抖振现象,减小脱靶量,提高拦截的精度。 Results show that the compound guidance law can effectively eliminate the chattering phenomenon, reduce the miss distance, improve the accuracy of interception.
7227 相干波形频率分集阵(frequency diverse array,FDA)雷达通过引入阵元间的频率差异,在观测空间中形成距离-角度-时间依赖的发射方向图。 Coherent wave frequency diversity array (frequency diverse array of FDA) radar arrays by introducing frequency difference, formed in the observation space distance - Angle - time depend on the direction of the launch of figure.
7228 针对相干FDA雷达体制回波接收处理的问题,提出了角度-时间二维匹配滤波器,同时实现了快时间波形匹配和等效发射波束形成,不同于传统匹配滤波器。 For coherent radar system by FDA echo receiving process problems, put forward the point of view - time two-dimensional matched filter, and realize the fast time waveform matching and equivalent emission beamforming, different from the traditional matched filter.
7229 并进一步考虑某些应用情况下,通过设计匹配时间窗,提出了分段匹配的二维匹配滤波接收处理方法。 Some application cases, and further consideration by matching time window design, put forward the block matching method of two-dimensional matched filtering to receive treatment.
7230 将雷达脉冲时间划分为多个子脉冲接收时间窗,并采用发射方向图调制的角度-时间二维匹配滤波函数对回波信号进行相干积累。 The radar pulse time division multiple sub pulse receiving time window, and the firing Angle pattern modulation - time two-dimensional matched filtering function of echo signal coherent accumulation.
7231 仿真实验给出了所提接收处理方法的性能验证。 The simulation experiment shows the performance verification of the proposed to receive treatment.
7232 相较于单模态生物识别技术,多模态生物识别技术具有更优的适用性、安全性和可靠性,成为目前生物识别技术发展的趋势。 Compared with single mode biometric technologies, multimodal biometric technology has better applicability, safety and reliability, become the current trend of the development of the biological recognition technology.
7233 在多模态生物识别4种融合层次中,特征层融合能够提取更多的区分性信息,消除特征的冗余,在理论上可达到最佳识别效果。 In multimodal biometric four fusion hierarchy, feature fusion layer can extract more distinct information, eliminate the redundant features, in theory, can achieve the best effect.