lastly ['lɑ:stli]
- lastly的基本解释
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adv.
最后, 终于
- Lastly I must explain that.
- 最后,我得解释一下那件事。
- 相似词
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The main job and contribution of this paper are as follows:Based on narrowband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, compute the cross-correlation function of FH signals from multichannels, then we get the cross power spectral density matrixCSDM Secondly, select the hops of FH signals from the CSDM via processing and analyzing the CSDM, meanwhile reduce the influence coming from noise, fixed frequency signal and other interferences; Lastly, estimating the DOA of every hop and according to the DOA, we can separate the hops, get the number of FH signals and their parameters. Propose a new method for designing the threshold in FH signal detection. This method makes it easy to get the threshold by theoretic computing and it can extremely reduce the interference of non-FH signals.Based on broadband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, get the DOA of the signals by wideband spatial spectrum estimation; secondly, separate the signals by spatial filtering using wideband beamformer; Lastly, we propose two methods for FH signal blind detection and blind parameter estimation, one is for several constant hop-rate FH signals whose dwell-time are different and another is for a single FH signal whose hop-rate is alterable.By employing spatial interpolation in broadband signal beamforming, it can reduce the number of antenna elements and corresponding RF modules, A/D converters, etc. It can also eliminate the mutual coupling between antenna elements while getting the narrower main beamwidth and lower sidelobe level.
本文的主要研究工作和贡献如下:●提出了一种基于窄带处理的FH信号盲检测和参数盲估计的实现方法,即首先求出多路信号之间的互相关,进而得到互功率谱密度矩阵,然后通过对CSDM进行对折处理来抑制噪声、定频信号及其他干扰的影响,并将所有属于FH信号的hop(每一跳的驻留时间在时频图上持续的线段)从CSDM中筛选出来,最后用阵列信号处理中的到达方向估计理论在频域中估计出各个hop的方向参数,利用方位信息完成FH信号分离并得到FH信号的数目及其各自的参数集;●提出了一种确定FH信号检测门限的策略,该策略不仅使得检测门限能够通过理论计算得到,而且还显著地抑制了非跳频信号的干扰,从而能有效地检测出FH信号;●提出了一种基于宽带处理的短波FH信号盲检测和参数盲估计的实现方法,即首先利用宽带空间谱测向技术得到接收信号的DOA,然后采用宽带波束形成技术对特定方向进行空间滤波,实现多个信号的分离,最后分别提出了两种FH信号的盲检测和参数盲估计方法,第一种方法适用于空间某个特定方向上存在着几个驻留时间不同的恒跳速FH信号和其他干扰信号的混合信号,第二种方法适用于空间某个特定方向上仅含一个可变跳速的FH信号和噪声的混合信号;●将空间插值的概念和宽带波束形成技术结合起来,提出了一种基于频域处理的宽带恒定束宽的波束形成方法。
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Lastly, your dentist will place porcelain crowns with cemented abetment.
最后,医生在基台上安装烤瓷牙冠,种植牙修复就全部完成了。
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When a few of local 3D terrain models have been reconstructed respectively,firstly find the common 3D points between every two adjacent local models based on edge detection and image matching,secondly fit the matrix of coordinate transformation employing the technique of separating rotation matrix and translate vector,and lastly register these local 3D models into a single coordinate system.
当恢复出多个局部3D地形模型时,首先基于边缘检测和图像匹配技术提取出相邻局部模型之间的公共数据点,然后采用分离旋转变换和平移矢量的策略拟合出相邻模型之间的坐标转换关系,之后就可以将局部模型统一在同一个坐标系下。
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Lastly:最后
呀呀落日关上了沉重的门9支离破碎(fragmented)上帝做证我是一个乖孩子10遥远(emote)说永远为了更好的怀念11如果可以(ifmay)最初的爱夏天里死去的花12禁不住不得不(can'thelp)所有的生命都为等着你13最后(lastly)我爱你我爱你
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Lastly:最后, 终于
summon up courage 鼓起勇气, 奋勇 | lastly 最后, 终于 | least square equations 最小二乘方程式
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Lastly:最后一点
C 第三层次: Third, Thirdly, Besides, In addition, Furtherm... | 最后一点: Last, Lastly, Finally, In the last place, Last of all, Shortly, Briefly, In short/brief | 简言之: In a word, In summary, To sum...
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Lastly:顺序
顺序:first, next, then, lastly | 举例:for example, for instance | 补充说明:by the way, besides
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And lastly:最后
And what about our boys?|那我们的男孩们呢? | And lastly...|最后, | ...lastly, the gods demand no less of us...|最后,诸神要求我们
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