ID 原文 译文
54877 利用傅里叶变换的渐进正态性和相互独立性,可推导BSNP单次判决虚警概率的数学表达式和判决门限的闭式表达式。 By using Fourier transform of gradual normality and mutual independence, can be derived BSNP single sentences mathematical expression of false-alarm probability and threshold of the closed expression.
54878 分析和仿真表明,BSNP可以准确地找出频带内被占用的频隙,相比于常规谱估计感知算法,可有效克服噪声不确定度对频谱感知性能的影响。 Analysis and simulation show that BSNP can accurately find out the frequency being used within the band gap, compared with the conventional spectrum estimation algorithm of perception, which can effectively overcome the noise effect on the properties of spectrum perception uncertainty.
54879 针对水下潜器在极区工作时,其常用惯性导航系统机械编排存在精度下降、无北向基准等问题,设计了适用于水下潜器极区工作的横坐标系捷联惯性导航系统机械编排方案。 For water dive when he worked in polar region and the commonly used mechanical arrangements exist precision of inertial navigation system declines, north to benchmark problems, design the abscissa is suitable for polar water diving device working machinery layout scheme of strapdown inertial navigation system.
54880 在构建了横坐标系参考框架的基础上,推导出各导航参数在横坐标系统和常规坐标系统之间的转换关系,建立了横坐标系捷联惯导系统的机械编排,并在此基础上分析其误差传播特性。 Abscissa in constructing the system frame of reference, on the basis of the navigation parameters is deduced in the abscissa conversion relations between the system and conventional coordinate system, established the abscissa of the strapdown inertial navigation system of mechanical arrangement, based on the analysis of the error propagation characteristics.
54881 通过误差分析,确定了横坐标系捷联惯导系统中存在的周期性振荡,并提出了适用于横坐标系捷联惯导系统的阻尼技术,有效抑制了周期性振荡。 Through error analysis, determine the abscissa of the strapdown inertial navigation system of periodical oscillation, and put forward the abscissa is suitable for the system of the strapdown inertial navigation system damping technology, effectively restrain the periodic oscillation.
54882 最后,通过仿真试验验证了该系统在极区工作的可行性和阻尼技术有效性。 Finally, a simulation experiment proves the feasibility of the system working in polar and damping technology is effective.
54883 空时插值方法通过对地面杂波空时导向矢量进行插值变换,能够有效地降低机载前视阵雷达地面杂波的距离依赖性,改善空时自适应处理器的杂波抑制性能。 Space-time interpolation method based on the ground clutter space-time guiding vector interpolation transformation, can effectively reduce airborne front array radar ground clutter distance dependence, improve clutter suppression performance of space-time adaptive processor.
54884 然而,当机载雷达接收通道存在阵元误差时,该方法对接收的数据处理失效。 However, in the presence of airborne radar receiver array yuan error, the method for receiving data processing failure.
54885 针对该问题,提出一种稳健的空时插值方法,该方法在杂波空时导向矢量周围选取约束导向矢量,然后进行插值变换,补偿地杂波距离依赖性。 Aiming at this problem, a robust space-time interpolation method is put forward, this method in clutter space-time around the steering vector selection constraint direction vector, and then the interpolation transform, compensation to clutter range dependence.
54886 仿真结果表明,当机载雷达接收通道存在阵元误差时,该方法能够有效地降低接收的地杂波数据的距离依赖性,提高空时自适应处理器的杂波抑制性能。 Simulation results show that in the presence of airborne radar receiver array yuan error, this method can effectively reduce the received the distance dependence of the ground clutter data, improve the clutter suppression performance of space-time adaptive processor.