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By detecting the autocorrelation of the sinusoid, the moments of arrival and ending of the ...

同时,通过对该正弦信号频率估计,结合已获得的到达时刻参数,就可以实现对该线性调频分量初始频率的估计。理论分析和计算机模拟结果表明本方法切实可行。

Under Etropy loss, this new estimate of the covariance matrix is its spectral decomposition estimate.

同时,我们证得:在一些模型中,在Etropy损失下,新估计的风险函数比其谱分解估计,ANOVAE和MINQUE的风险函数小。

In this paper we propose a method called Generalized Spectral Correlation Signal Subspace Fitting for DOA estimation,which is applicable in both wide and narrow band scenarios.Especially,in narrow band cases,the method is capable of enlarging the effective aperture of sensor array considerably.

本文提出了一种用广义谱相关信号子空间拟合进行波达方向估计的方法,该方法同时适用于宽带与窄带信号的DOA估计,在窄带情形下还能够大大提高阵列的等效孔径。

A method to estimate the variation upper bound of end-to-end delay is proposed. The anycast requests with QoS constraint are supported by measuring, sharing and estimating network parameters between routers and anycast members in a small region.

同时,提出了一种由分段延迟变化估计总体延迟变化上界的方法,通过组成员和路由器之间的小范围网络参数的测量、分享和估计,支持带QoS约束的任播通信请求。

Also,the effects of estimation were dependent on structure of population size,accuracy of estimates would be decreased when number of sires was too few or data contained small number of animals.

同时,群体含量和结构能影响各种方法的估计效果,群体含量较小或资料来源的公畜数太少,将导致遗传参数的估计误差增大,准确性降低。

While by introducing the spherical simplex UT, a better-behaved sigma point selection strategy, the number of sigma points required to the same transformation accuracy can be dramatically reduced, and accordingly, the computation burden can be avoided.

在有陀螺模式下,设计了基于误差修正罗德里格参数的SUKF姿态估计算法,在计算过程中同时能够保证四元数始终归一化。在无陀螺模式,基于MRPs的姿态表示和卫星刚体动力学方程,实现了SUKF姿态估计算法。

For this class of estimators, several SNR estimation algorithms have been investigated.

同时对于这类估计方法,我们对几种信噪比估计算法进行了研究。

In this paper, using thermodynamic formalism for sub-additive potential defined in [4], upper bounds of Hausdorff dimension and box dimension of non-conformal repellers are obtained.

作者利用确定性的次可加拓扑压的变分原理,给出了非共形排斥子的Hausdorff维数的一个上界估计,证明了Barreira, Falconer, Zhang Yijing等人的几个不同形式的上界的估计是一致的,同时把他们的不同形式的上界统一成广义Bowen 方程的根。

In chapter 3,a based on pilot symbols channel estimation method and its simplifiede method are discussed in detailed. In this chapter we bring forth a method that is fit to the extremely fading channels.

第三章介绍了一种基于导引符号的MIMO-OFDM系统的信道估计方法及其改进型方法,同时提出了一种适合于极端衰落信道条件下的基于导引符号的信道估计方法。

According to the function of distributed emulator, optical information processing and image multi-object tracking system, the following three aspects were emphasized in this dissertation. Firstly, a vast virtual terrain, ground radar models and canyons were created for the distributed emulator with modeling software Creator. The radars were driven to scan during emulating and the real time terrain code was sent to Radar module. Secondly, an optics channel simulating the optics camera of a virtual aircraft was implemented with simulating software Vega. The 2-D information got from the channel was translated and sent to multi-sensor information fusion system as an optics information source. Thirdly, the dissertation studied some motion estimation methods and analyzed the factors which influence the speed and the precision of the block matching algorithms. Then an improved block matching method was proposed for image multi-object tracking system and applied in the system combined with frame difference method.

论文根据多传感信息融合实验系统中的分布式飞行仿真系统、光学信号处理器和图像多目标跟踪系统三个子系统的功能要求,具体完成了以下三方面的工作:首先利用建模软件Creator创建分布式飞行仿真系统中的大面积地形、场景中的地面雷达模型和峡谷地形,并在仿真过程中实时驱动雷达模型的扫描,同时为后续雷达仿真模块提供实时地形编码;其次利用仿真软件Vega,在分布式仿真系统中为光学信号处理器设计实现了光学通道,模拟飞行器的光学摄像机的功能,并且对由此通道获得的目标二维光学信息进行转化处理,作为光学信息源发送给后续的多传感信息融合器;最后针对图像多目标跟踪系统,在研究图像分割运动估计算法的基础上,通过分析影响块匹配算法速度和精度的因素,改进了块匹配运动估计算法,结合差分法可应用到目标跟踪系统中。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。