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- power spectral analyzer 功率谱分析仪
- The working principle, characteristics and types of on-line tunable diode laser spectral analyzer are described. Its development prospect is discussed. 摘要介绍了可调谐激光二极管激光光谱分析器的工作原理、性能特点和结构形式，说明了该仪器在在线过程分析中的优势，对其发展远景作了讨论。
- Methods:Sixtyfour patients in cognition function were studied by BEAM and CT,with the power spectral analysis. 方法 :应用脑电地形图(BEAM)和计算机断层扫描(CT) ,通过对64例AICA患者认知功能进行评估。
- A self-adaptive feature extraction method based on power spectral centroid is proposed. 摘要提出一种基于功率谱重心的自适应特征信息提取方法。
- We analyse statistics properties of ground clutters and study AR model of correlated clutters power spectral density. 分析了地杂波统计特性，研究了相关雷达杂波功率谱特性的AR模型及其模拟方法。
- FFT power spectral patterns can extract the periodic characteristics so that they can be compared,identified and classified quantitatively. 因此，木材解剖特征FFT图谱的研究对于木材的鉴别、分类及演化规律的研究都具有十分重要的意义。
- Classical Doppler Power Spectral (DPS) is not applicable because there are many kinds of distribution of Power Azimuth Spectrum (PAS) in MIMO system. 摘要MIMO系统中的角度功率谱有多种分布形式，所以经典多普勒功率谱不再适用。
- The signal generated by partial discharge is picked up by UHF antenna and spectral analyzer, and the data are transfered to the computer for analysis by GPIB. A commonly defect in GIS was constructed in order to examine this system. 用特高频天线和频谱分析仪采集局放信号,通过GPIB卡传送给计算机进行分析处理,并在GIS中构造了一种常见的故障类型,对该系统进行了验证。
- The paper analyses the signal processing with emphasis on Signal to Noise Ratio (SNR) in output of correlator and SNR in signal power spectral density. 并对算法处理中相关器输出中的信噪比（SNR）和功率谱密度中的SNR进行了重点分析。
- This paper describes an interface and programs which connect the spectral analyzer and microcomputer To zse them may send the heart sound collected by spectral analyzer to the micrceomputer. 本文介绍一种频谱分析仪与微处理机间的接口电路和程序,可将频谱分析仪所采集的心音送入微处理机。
- With the power spectral density, the vibration mechanism and the vibration transfer process of viaduct caused by the traffic load were introduced. 摘要从功率谱的角度介绍城市高架桥梁在交通荷载下产生振动的机理和振动的传递过程。
- The power spectral density of gearbox vibration signals is estimated by the periodogram from which original feature sets are derived. 为了使诊断结果更好地可视化,利用遗传编程结果的固有随机性,提取两个新特征指标。
- In practical application,one of the difficulties is the adjustment of the power spectral density function to various soil conditions. 在实际应用中,调整功率谱密度函数以适应各类场地土仍是一项困难的工作。
- The statistical method for calculating the power spectral densities of of binary signals given by Bennett is extended to those df multi-state digital signals. 本文把Bennett给出的二进制数字信号功率谱密度的系统综合算法推广到常见的多态数字信号。
- Two cases of power spectral intensity function for the earthquake acceleration imput at the base rock are considered: the white noise spectrum and filter white noise spectrum. 计算结果表明，1)在基岩输入地震加速度的功率谱为白噪声谱的情况下，土层的最大期望反应均有别于过滤白噪声谱时的相应值；
- Therefore, experience is needed to made good analysis.We dealt with the colonic pressure data by analyzing its power spectral density(PSD).The PSD is com... 本文对实际采集的结肠压力信号进行功率谱密度分析,并与结肠的基本功能相对照。
- real-time digital spectral analyzer 实时数字频谱分析仪
- This paper presents a IJF coding method based on filter shaping, and deduces IJF power spectral density adopting this method.Finally this paper simply introduce FQPSK modulation. 本文介绍基于滤波器成形法的IJF编码，并推导基于该法的IJF功率谱密度，在此基础上简要介绍了FQPSK调制体制。
- radiation meter spectral analyzer 辐射计频谱分析仪
- The density of power spectral entropy, on the whole, is an exponential decline curve with frequency augmentation without reference to water flooded extent. 功率谱密度不论水淹程度如何，整体为一随频率增大其能量按指数递减连续频谱；
