By exploring the phase information among symbols of the Direct Sequence Spread Spectrum (DS-SS) signal, a novel de-noising approach, used in low signal noise ratio environment, is presented.
利用DS -SS信号符号间相位信息，提出了一种可工作于低信噪比下的直接序列扩谱(DS - SS)信号噪声抑制方法。
The precision ratio of solvent was confirmed, and feasible spread solvent was selected.
确定了溶剂的精确配比，选择了适宜的展开剂。
Using the binomial fitting method in MATLAB to program numerical calculation program, the analytical formulations between feed speed, width-radius ratio and width spread ratio were deduced.
使用MATLAB编写了数值计算程序，采用二项式拟合的数值方法，总结归纳出了进给速度和宽径比与宽展率之间的解析公式。
Point spread function (PSF) and Strehl ratio (SR) are used to evaluate the imaging quality of the system with different defocus parameters.
通过分析点扩散函数、斯特列比和离焦量的关系来评价三种不同掩模板对光学系统成像质量的影响。
This paper discusses the despread of low signal to noise ratio of the direct sequence (DS) spread spectrum signals using intermediate-frequency recirculation summation loop (IFRSL).
本文讨论了用中频积累法实现低信噪比直接序列扩频信号的解扩。
Ascend with the market the experiment plank that spread compare, the function price ratio is high, in brief and easily the advantage that use.
与市面上流行的实验板相比，又有性价比高、简单易用的优点。
This is due to the variation of the surface tension which make them spread to oil films with a stable ratio.
聚并前后的油膜半径变化规律与球状油滴聚并变化规律一样，这是对油滴按比例铺展成油膜的自然推论。
Cpm is an overall capability index defined as the ratio of the specification spread (USL - LSL) to the square root of the mean squared deviation from the target.
Cpm是一个总体的能力指数，定义了均值偏离目标值的均方差的平方根和规范宽度的之间的比值。
Results show that final molar ratio of DFK resin and spread affected boiling peel percentage significantly, filler has no effect on it. More ideal parameters of cold-press process...
结果表明，DF K树脂的终摩尔比和涂胶量对煮沸剥离率的影响最显著，填料添加量影响甚微，并确定了较为理想的冷压胶合工艺参数。
The application results show that the intensity of resisting pressure, the ratio of absorbing water and the ratio of retention water of the concrete blocks spread or sprayed with the curing...
应用实验表明，涂有乳化蜡型混凝土养护剂的混凝土模块抗压强度、吸水率和失水率均优于或等于传统养护。
The application results show that the intensity of resisting pressure, the ratio of absorbing water and the ratio of retention water of the concrete blocks spread or sprayed with the c...
应用实验表明，涂有乳化蜡型混凝土养护剂的混凝土模块抗压强度、吸水率和失水率均优于或等于传统养护。
Based on the model, the BER Bit Error Ratio performance is analyzed for narrow-band modulation and wide-band spread -spectrum modulation of coherent PSK Phase Shift Key...
结果表明移动卫星信道中存在的多径和阴影现象使系统的误码性能恶化，而采用宽带扩频调制则可极大改善系统的性能。
In this paper, a blind despreading algorithm is proposed for the synchronous multi-user long-code Direct Sequence spread Spectrum (DS-SS) signals in low signal to Noise Ratio (SNR) scenarios.
针对同步多用户长码直扩信号，该文提出了一种低信噪比条件下的盲解扩算法。
In this paper, a blind despreading algorithm is proposed for the synchronous multi-user long-code Direct Sequence spread Spectrum (DS-SS) signals in low signal to Noise Ratio (SNR) scenarios.
针对同步多用户长码直扩信号，该文提出了一种低信噪比条件下的盲解扩算法。
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