1) sample rate conversion
采样率变换
1.
Cascaded integrator comb(CIC) filters are widely used for sample rate conversion,but the large distortion of the pass band and the small attenuation of the stop band limit its applications.
为解决应用于采样率变换系统中的级联积分梳状(CIC)滤波器通带失真大和阻带衰减小对其应用的限制,在分析传统CIC滤波器传输函数和频谱特性的基础上,引入二级可调参数简单滤波器,设计一种高性能CIC滤波器。
2.
Directed at overcoming the pressure on DSP computation exerted by huge data quantity due to intermediate frequency sampling in the baseband in software radio system,the paper introduces the use of the technique of sample rate conversion in the receiver/sender and cascade integrator comb(CIC) filter to realize digital sampling rate conversion.
为了解决软件无线电通信系统中频采样之后的极大数据量在基带处理部分对DSP计算的压力,在发射和接收过程中采用采样率变换技术,并引入CIC滤波器实现采样率转换,很好地满足了抗混叠效应的要求。
3.
Directed at overcoming the pressure on DSP computation exerted by huge data quantity due to intermediate frequency sampling in the baseband in software radio system,the paper introduces the use of the technique of sample rate conversion and cascade integrator comb(CIC) filter to realize digital sampling rate conversion.
为了解决软件无线电通信系统中频采样之后的极大数据量在基带处理部分对DSP计算的压力,本文采用采样率变换技术,并引入CIC滤波器实现采样率转换,很好地满足了抗混叠效应的要求。
2) sampling rate conversion
采样率变换
1.
In this paper,a modified multiphase filtering algorithm based on direct decimation after multiphase interpolation is proposed,by which sampling rate conversion with arbitrary fraction for wideband signals can be implemented successfully.
提出了一种改进的多相滤波方法,通过多相内插后的直接抽取,可完成宽带信号任意分数倍的采样率变换。
3) multilevel change of sampling rate
采样率多级变换
4) variable sampling rate
变采样率
1.
According to dissimilar sensor asynchronous data fusion can achieve information implementarity and enhance target track precision,a dissimilar multisensor asynchronous data fusion arithmetic based on variable sampling rate is presensed.
针对异质传感器数据融合能够实现信息互补,改善目标跟踪精度,提出了一种多异质传感器在变采样率下的异步量测融合算法,即首先将多传感器数据组合成类似于单传感器数据的异步数据处理方法,进行点迹合成,再将合成后的虚拟量测对当前时刻的目标状态进行更新。
2.
To sum it up,the main aspects of this paper as follows:First,a solution of the self-adaptive variable sampling rate and resolution data acquisition system is presented,introducing the hardware design and the software of the solution respectively.
归纳起来本文的主要工作有以下几个方面:首先,提出了自适应变采样率及分辨率数据采集系统的解决方案,分别介绍了该方案的硬件和软件设计。
3.
Aiming at the problem of variable sampling rate sensor multi-target tracking in clutter,considering the ability that Secondary Surveillance Radar(SSR) can identify enemy or friend target and enhance the accuracy of tracking enemy target,a SSR modified unscented Joint Probabilistic Data Association(JPDA) tracking algorithm is proposed for multi-sensor asynchronous system.
针对杂波环境下多变采样率传感器多目标跟踪问题,考虑到二次雷达(SSR)具有辨别敌我方目标和更精确的高度探测能力,本文提出了一种带SSR修正的异步多传感器系统的无味JPDA跟踪算法。
5) twice sampling frequency transformation
二次采样频率变换
6) Sample rate conversion
采样率转换
1.
And this problem can be solved effectively with the sample rate conversion.
DSP是软件无线电的关键技术之一,也是软件无线电发展的瓶颈,而采样率转换技术的应用则是一个有效的解决方法。
2.
In this paper,we present an efficient way to implement image size conversion by sample rate conversion,and give the algorithm to design linearphase finiteimpulse response (FIR) antialiasing filter and linearphase FIR interpolation filter.
提出了一种通过采样率转换改变图像尺寸的有效方法,给出了线性相位FIR插值滤波器和线性相位FIR抗混叠滤波器的设计算法。
3.
Sample rate conversion is an important functionality of a multi-mode mobile communication terminal.
有理数采样速率转换可以划分为整数倍和分数倍采样率转换。
补充资料：Radon变换和逆Radon变换
Radon变换和逆Radon变换
X线物理学术语。CT重建图像成像的主要理论依据之一。1917年澳大利亚数学家Radon首先论证了通过物体某一平面的投影重建物体该平面两维空间分布的公式。他的公式要求获得沿该平面所有可能的直线的全部投影(无限集合)。所获得的投影集称为Radon变换。由Radon变换进行重建图像的操作则称为逆Radon变换。Radon变换和逆Radon变换对CT成像的意义在于，它从数学原理上证实了通过物体某一断层层面“沿直线衰减分布的投影”重建该层面单位体积，即体素的线性衰减系数两维空间分布的可能性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条