Sampling Frequency(采样频率)研究综述
Sampling Frequency 采样频率 - The dependences of the signal/noise ratio on the sampling frequency are given. [1] Speed and distance were recorded at a sampling frequency of 15 Hz, whereas acceleration was recorded at 100 Hz by means of a built-in triaxial accelerometer. [2] Both the sampling frequency effect and inaccuracies on the wave propagation velocity are considered in order to define the distance protection zone. [3] The multichannel discrete-time system can increase and decrease the sampling frequency by fraction value according to the incoming signal's maximum frequency from various musical instrument sources. [4] We observed that the tracking accuracy is primarily affected by the localization rate, which is directly related to the sampling frequency of the sensors, and less significantly affected by the sensor resolution. [5] Future water quality monitoring is needed and should include increasing the number of sampling locations and the sampling frequency in order to characterize the spatial and temporal variability of hydrochemical parameters and allow a comprehensive monitoring of legally fixed water quality parameters/indicators. [6] Automated home cage behavior analysis produces highly granulated data both in terms of number of features and sampling frequency. [7] Several studies have analysed the loss of information associated with the reduction of information when using five minutes instead of four seconds as a sampling frequency, or when compressing a time series recorded at 5 min to 10 min, concluding that some, but not all, of these magnitudes are seriously affected. [8] Besides, each electrocardiogram (ECG) acquisition dataset produces a different length and sampling frequency to ensure sufficient precision of the R–R intervals to determine the heart rate variability (HRV). [9] The article presents the results of digital signal processing containing distortions in the form of a harmonic component with a decrease in the sampling frequency. [10] If, according to the conditions of the process, it is necessary to ensure the fastest detection of a violation, then the optimization problem of finding such values of the sample size, sampling frequency and position of the control boundaries is solved that minimizes the average time of the unstable state of the process. [11] Sampling frequency of 2KHz is used. [12] The simulation results show that the attitude updating frequency can be improved to the same as the sampling frequency of gyro on the premise that the accuracy of the coning error compensation is improved compared with the traditional coning error compensation multi-subsample algorithm. [13] The effects of the sliding window length, the sampling frequency, the size of the training set, and overfitting have been studied. [14] In doing so, it is crucial to understand how sampling frequency affects the value of the data. [15] Recent electronic advances enabled the development of high-resolution drilling dynamic data recorders, extending the sampling frequency from traditional 100 Hz to 1,600 Hz. [16] Then the main time error factors, sampling frequency and time delay are determined. [17] However, the sampling frequency and cost-prohibitive scientific equipment needed to monitor OCA are barriers to implementing the widespread monitoring of dynamic coastal conditions. [18] In addition, analysis on sub-sampling frequency plan, amount of harmonic rejection and its effect on noise figure, transparency of the impedance at the RF port and its tunability with respect to the input impedance of IF-LNA is presented. [19] PPG data were collected by smartphone Xiaomi Mi9 with sampling frequency of 30 Hz. [20] Furthermore, the sample-and-hold mechanism associated with the sampling frequency is also taken into account with this approach. [21] 9~\mu \text{W}$ of power when operating at 2-MS/s sampling frequency. [22] In this paper, we investigate an efficient waveform acquisition method with the equivalent-sampling using the metallic ratio of the sampling frequency and the input frequency, which is expected to be used for on-line, short-time and simple analog/RF/mixed-signal IC testing. [23] A physical model test is designed, in which a thermally sensitive material (with heat-sensitive strength) is adopted as the weak structural plane of the hazardous block, and the change in the tilt angle during the process of block instability is monitored at a sampling frequency of 1000 Hz. [24] With a sampling frequency of 20 MS/s, the proposed architecture attains signal-to-noise distortion ratio (SNDR) of 65. [25] Logging of different parameters from the machine and from sensors is synchronized and sampling frequency can be adjusted if necessary. [26] Various current control structures suitable for multi-phase interleaved systems are studied: i) a conventional PI controller with a single update per switching period, ii) a PI controller with a fast execution rate, equal to the sampling frequency instead of the switching frequency iii) a LQR-based state feedback controller (SFC), iv) a model predictive controller (MPC), and v) an adaptive hybrid controller that consists of a hysteretic controller during transient and a PI controller during steady state. [27] First of all, the sampling frequency is significantly lower compared to cable bound devices (Shunt Reservoir® 40 Hz, Neurovent-P-tel® 5Hz). [28] In addition, the proposed algorithm reduces the dependence of the selected parameter on the sampling frequency and on the number of DAC bits used, which makes it possible to expand the dynamic range of the generator (in the current channel) without using additional amplifiers with programmable gain (PGA). [29] The results are robust to the bandwidth parameter, limit for station radius of influence, and sampling frequency. [30] The hot springs were observed with a sampling frequency of 3 or 4 days for one year. [31] Estimates of Fyw depended on sampling frequency, the method of estimation, bedrock geology, hydroclimate, and factors affecting streamflow generation processes. [32] In the context of the subsurface pollutant detection using cooperative targets probed by Ground Penetrating RADAR (GPR), we assess the sampling frequency stability of the instrument as needed to make sure any time delay variation between echoes is associated with sub-surface chemical detection and not with instrument drift. [33] The design features several innovative elements such as using low voltage to provide power to the devices to measure the current and digitize it with a sampling frequency of 1 KHz, it is generated based on a DC-DC converter that produces three voltages, +12 V, −12 V, and 5 V, from a conventional 10 V source. [34] However, due to the OPD of FTSs over time is non-uniform, the stability of hardware-triggering sampling method strongly suffers from the variation of sampling frequency in the time domain. [35] The sampling frequency is increased by performing consecutive measurements with a constant excitation function and varying time delays. [36] CL features the advantage of facilitating Correlation-based Feature Subset Selection (CFSS), indirectly leading to a pseudo-optimization of the monitoring network, minimizing the number of MWs (not the sampling frequency though), based solely on the efficiency in identifying the source criterion. [37] Following the principle of SPM, the sampling frequency should be high enough to cover the resonance response of the acceleration sensor. [38] Thanks to the Bandpass Sampling (BPS) technique, the receiver addresses multiple RF bands without changing the sampling frequency. [39] Obtained results, both during the calibration and the investigated real scenario, confirm that at least a GPS signal with a sampling frequency of 1Hz is needed to track the rider’s behaviour to detect events. [40] The flow waveform graph was digitized and interpolated using low frequency Fourier components for the purpose of low pass filtering and standardization of sampling frequency (Figure 1). [41] A novel method was first developed that can effectively identify errors in the sampling frequency of the OBS instruments. [42] Moreover, the combination of modified weighted K-nearest neighbors (KNN) and overshoot multiples achieves 100% appliance identification accuracy under a sampling frequency of 6. [43] 3 section? What is the number of the samples and the representativity? What is the sampling frequency? What is the variability of the measured concentrations? Does the concentration vary in time? Decrease? To prevent the reader’s doubts, a part of the explanation from line 349 to 355 could be used in the methodology presentation and the fact that the estimated BE will be compared to the literature. [44] Results of two different radiation experiments (gamma and X-ray) each considering two identical 130nm, 8-bit SAR ADCs, operating with distinct sampling rates, showed that lower sampling frequencies cause the converters to fail at lower accumulated dose, while increasing the sampling frequency increases the converters robustness to radiation. [45] The proposed model is developed considering all facet electrocardiogram amplitude (ECG), frequency components, sampling frequency, extraction methods and acquisition techniques. [46] A novel Goodness-of-Fit (GoF) based accurate SE technique for CR system has been proposed in this work involving Time-series data samples generated from Field Programmable Gate Array (FPGA) based Wireless open Access Radio Protocol (WARP) testbed having a sampling frequency of 40 MHz. [47] 47 kHz is measured using 256 data points at a sampling frequency of 250 kHz and an acquisition time of 1. [48] These patterns were used for the online pattern recognition technique based on the Discrete Cosine Transform and implemented in the FPGA with the sampling frequency up to 120 MHz. [49] Since it was necessary to reduce the sampling frequency to use wireless communication, we created 10 Hz ~ 60 Hz data from 200 Hz data and compared them. [50]给出了信噪比对采样频率的依赖性。 [1] 以 15 Hz 的采样频率记录速度和距离，而通过内置的三轴加速度计以 100 Hz 记录加速度。 [2] 为了定义距离保护区，考虑了采样频率的影响和波传播速度的不准确性。 [3] 多通道离散时间系统可以根据来自各种乐器源的输入信号的最大频率，按分数值增加和减少采样频率。 [4] 我们观察到跟踪精度主要受定位率的影响，定位率与传感器的采样频率直接相关，受传感器分辨率的影响较小。 [5] 未来的水质监测是必要的，应该包括增加采样点的数量和采样频率，以表征水化学参数的空间和时间变异性，并允许对法律固定的水质参数/指标进行全面监测。 [6] 自动化的家庭笼子行为分析会在特征数量和采样频率方面产生高度细化的数据。 [7] 几项研究分析了使用 5 分钟而不是 4 秒作为采样频率，或压缩 5 分钟到 10 分钟记录的时间序列时与信息减少相关的信息丢失，得出的结论是，一些但不是全部这些量级受到严重影响。 [8] 此外，每个心电图 (ECG) 采集数据集都会产生不同的长度和采样频率，以确保 R-R 间隔具有足够的精度来确定心率变异性 (HRV)。 [9] 本文介绍了数字信号处理的结果，其中包含以谐波分量形式出现的失真，采样频率降低。 [10] 如果根据过程的条件，需要确保以最快的速度检测到违例，则解决寻找样本量、采样频率和控制边界位置等值的优化问题，以最小化平均时间过程的不稳定状态。 [11] 使用 2KHz 的采样频率。 [12] 仿真结果表明，与传统的锥面误差补偿多子采样算法相比，在提高锥面误差补偿精度的前提下，姿态更新频率可以提高到与陀螺仪采样频率相同。 [13] 研究了滑动窗口长度、采样频率、训练集大小和过拟合的影响。 [14] 在此过程中，了解采样频率如何影响数据值至关重要。 [15] 最近的电子技术进步促进了高分辨率钻井动态数据记录仪的开发，将