The sea floor will be treated as a two-dimensional random field described a parameterized power spectrum.

The use of auto-correlation function method and cycle map Method random signal power spectrum estimation . 2.

利用自 相关函数法和周期图法实现随机信号的功率谱估计.

Classification of multi-signal power spectrum estimate.

多信号 分类法估计的功率谱.

And through the infrared spectrum, the composition and structure of the product have been defined.

并通过红外光谱, 明确了产品的组成和结构.

The infrared spectrum is mostly dependent on the molecular vibration and molecular structures.

红外吸收光谱主要与分子振动和分子结构有关.

The expected molecular structure of CPAA made in our lab was identified from its infrared spectrum.

红外光谱分析表明,合成的CPAA乳液具有预期设计结构.

The structure of production was validated by mass spectrum, infrared spectrum, Magnetic resonance spectrum.

得到的产品经由质谱 、 红外光谱 、 核磁共振谱确认结构正确.

Effect of Inorganic Anion Doping on the Photo-catalytic Property of TiO _ 2 Film and Infrared Spectrum Analysis.

无机阴离子掺杂TiO_2薄膜光催化性能及红外光谱分析.

Using infrared spectrum of heat stabilizers mechanism research shows that, after joining stabilizer, PVC crystallinity, stability.

采用红外光谱对热稳定剂机理研究表明, 加入稳定剂后, PVC结晶度下降, 稳定性提高.

Based on the analysis of the sensor signal frequency spectrum is made with a SD 2380 instrument.

在分析该传感器信号的基础上,用SD2380动态分析仪作了频谱分析.

Through vibration frequency spectrum analysisof no-tillage seeder in field, its vibration characteristics were obtained.

通过对播种机的田间振动频谱分析, 得到了它的的振动特征.

A filter whose transfer function is matched with the frequency spectrum function of input signal.

其传递函数与输入信号的频谱函数相匹配的一种滤波器.

The Frequency Spectrum Dsitribution and Time Propagation of Voltage and Current pulse on a Transmission Line.

传输线上脉波电压及电流之频谱分布及时域传播.

The cost of carrying more energy is that the frequency spectrum is widened.

但该编码在提高信号能量的同时,展宽了频谱.

A bit of English Notes wavelet transform, used in calculating the frequency spectrum, suitable for beginners.

带点中文注释的小波变换, 计算频率谱用的, 适合初学者.

Compared to the frequency spectrum of those samples, the piezoelectric resonance modes were recognized.

配合频谱识别出了对应的压电谐振的模式.

Among the many Spread Spectrum technologies, Direct Sequence Spread Spectrum ( DSSS ) is a most popular technique.

直接序列扩频通信 ( DSSS ) 系统是应用最广泛的一种扩频通信方式.

Thus , the longer spread spectrum sequences can be used and the robustness accordingly enhanced.

Gold码的应用使得算法可以采用较长的扩频序列,提高了鲁棒性.

It uses spread spectrum technology.

它使用扩频技术.

In this paper, first, the basic theory and characteristics of spread spectrum communications was introduced.

本文首先介绍了扩频通信的基本理论及其特点,研究了扩频通信系统的基本模型.

Analysis shows that this MSK spread spectrum communication system in the underwater acoustic channel is feasible.

分析表明,采用相位比较差分解调和滑动相关捕获的MSK扩频系统 在水下声信道中的应用是可行的.