Description: 时频工具箱中计算群延迟的函数，语法格式：［gd,fnorm]=sgrpdlay(x),x是时域信号，fnorm返回频率坐标,gd返回估计出群延迟的输出向量．-frequency toolbox when calculating group delay functions, grammar format : [gd. fnorm] = sgrpdlay (x), x is the time domain signal to the frequency fnorm coordinates, gd to estimate the group delay the output vectors. Platform: |
Size: 1529 |
Author:李响 |
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Description: 时频工具箱中计算群延迟的函数，语法格式：［gd,fnorm]=sgrpdlay(x),x是时域信号，fnorm返回频率坐标,gd返回估计出群延迟的输出向量．-frequency toolbox when calculating group delay functions, grammar format : [gd. fnorm] = sgrpdlay (x), x is the time domain signal to the frequency fnorm coordinates, gd to estimate the group delay the output vectors. Platform: |
Size: 1024 |
Author:李响 |
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Description: 在目标被动式跟踪中广泛应用的伪量测变换估计器(PLE)具有良好的误差收敛性。然而由于等价噪声和状态的相关性,该估计器的估计是有偏的。提出的强跟踪滤波器(STF)通过强制白化残差具有自适应地校正估计偏差和迅速跟踪状态变化的能力。STF已经在非线性系统时滞估计、故障诊断与容错控制方面取得了很好的效果。-Passive target tracking is widely used in the pseudo-measurement transform estimator (PLE) has a good error convergence. However, due to the equivalent noise and the relevance of state, the estimator is a biased estimate of. Raised strong tracking filter (STF) has adopted mandatory bleaching residuals adaptively estimated bias correction and rapid tracking of the status change. STF has been estimated in the time-delay nonlinear systems, fault diagnosis and fault-tolerant control has been achieved very good results. Platform: |
Size: 7168 |
Author:冯絮影 |
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Description: 基于分数低阶协方差仿真的时延估计问题，其基本思想是利用两个接收信号的相关函数来估计时间延迟。-Based on the scores of low-level simulation of time delay covariance estimation problem, the basic idea is to use of the two received signal correlation function to estimate the time delay. Platform: |
Size: 1024 |
Author:阿岩 |
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Description: 进行等时延分段，并对等间隔段的两个时延矩阵分别求取均值，采用类似联合近似对角化，估计出最优化的酉矩阵，-ing second-order statistics (different time-delay correlation matrix) of non-stationary and structural characteristics of the signal timing can roughly estimate that the instantaneous linear mixture of blind source signal. With the time delay increasing, only using a single delay covariance equalization and ignoring the time-varying characteristics of the signal, which difficult to ensure the performance of algorithm. Analysis of the average characteristics of ma Platform: |
Size: 166912 |
Author:心结 |
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Description: C-C算法应用关联积分能够同时估计出时间延迟和嵌入维数，是相空间重构的前提。
本程序通过C-C算法计算duffing方程产生的混沌时间序列的时间延迟和嵌入维数。-CC algorithm is used to simultaneously estimate the correlation integral time delay and embedding dimension, is a prerequisite for phase space reconstruction.
This procedure CC algorithm duffing equation chaotic time series generated by the time delay and embedding dimension. Platform: |
Size: 48128 |
Author: |
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Description: 处理波形，计算声波再通过障碍物以后的延迟,从而计算声波在不同介质中的传播速度-Treatment of waveform, calculated the time delay after the sound waves pass through the obstaclesand，In order to estimate the acoustic propagation velocity in different media Platform: |
Size: 4096 |
Author:Ma Yingchong |
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Description: 一种基于分数低阶协方差仿真的时延估计问题，其基本本思想是运用两个接收信号的相关函数来估计时间延迟。
-Based on fractional lower order covariance simulation delay estimation problem, the basic of this thinking is the use of the correlation function of the received signal to estimate the time delay. Platform: |
Size: 1024 |
Author:weimingmm |
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Description: 角度和延时估计，里面一共5个小程序，已经写成函数形式，亲测好用-to estimate angle and time delay in array signal processing Platform: |
Size: 5120 |
Author:zhaojunlin |
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Description: TMS28335初始化完成之后，
1、 先DDS产生73.35hz的方波。（问流量管固定频率）
2、 乘法器的另一个数字端输入乘数直接给一个固定值（按照5v），系数是固定的就是对应PID输出的那个接口，串行十二位信号输出（需要先定好一个GPIO接口）。
3、 再延迟一定的时间0.1s或其他时间之后，开始ad采集信号，分别采两路AD信号，此时不稳定（为什么要等到一定的幅值才开始采集AD信号）
4、 选择250点估计一个频率，频率估计的方法采用计算峰值次数的方法或者过零点，总之是为了保证精度采用时域估计的算法，这一块主要是一个扫频子程序，计算频率共振点。
5、 之后改变DDS的输出频率，循环对512点的数据进行扫频的处理
6、 频率控制完成之后，就可以缓慢降低PID控制输出的参数，此时暂时不计算频率，通过不断调整系数使AB的幅度保持在1 的范围内。
7、 测试幅度控制稳定之后a、采用幅度和频率同时控制b。采集数据进入频率估计和相位差估计的后续程序的大循环
8、 注意：采样和控制是同时进行的，所以要设置中断，以及看懂AD的程序，以及内部存储以及数据处理资源的分配。
-TMS28335 initialization is complete,
1, the first DDS generated square wave of 73.35hz. (Q flow tube fixed frequency)
2, another digital side of the multiplier input multiplier directly to a fixed value (in accordance with 5v), the coefficient is fixed corresponding PID output interface, serial twelve signal output (need to be a good one GPIO interface).
3, and then after a certain time delay 0.1s or other time, ad signal acquisition were collected two AD signal instability (Why wait until a certain amplitude began collecting AD signal)
4, 250 point estimate a frequency, frequency estimation method using the method of calculation of the number of peak or zero crossing, in short, in order to ensure the accuracy of time-domain estimation algorithm, this piece is a sweep subroutine to calculate the frequency resonance point.
5, after the change of the output frequency of the DDS data of 512 points, the loop processing Sweep
6, after the completion of the frequency control, it can sl Platform: |
Size: 164864 |
Author:kiss |
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Description: 研究了一种数字中频 GPS 信号生成方法。给出了数字中频信号数学模型，模型考虑了各种因素对信号的影响。通过导航电文分析，提出信号传播时延、多普勒频移以及信号入射方向的估计方法。给出了中频信号产生的流程，对其中时延的设置，信号的上变频、信号幅度设置以及方向信息的导入进行了阐述。对所生成的信号模型进行了仿真分析，给出了信号产生各个阶段的频谱，对所生成的信号进行了相关捕获。仿真结果表明频谱特征符合理论分析，能够被捕获并找出信号时延从而实现定位。证明该信号模型能作为信号源应用于 GPS接收机研制中。-】The paper discusses a digital IF GPS signal generation method, gives the mathematic
model of digital IF signal. This mathematic model takes into account the influence of various
factors. Based on analysis of the navigation data, the method to estimate signal propagation time,
Doppler frequency shift and the coming angle of signal is proposed. The flow to generate IF signal
is given, in which the setting of time delay, the up-frequency conversion, the setting of signal
magnitude and the introduction of direction information are expounded. The signal generation model
is simulated and analyzed, the spectrum of signal in each stage given, and the correlation capture
of the generated signal also done. Simulation indicates that the spectrum is in accord with
theoretical analysis the signal could be captured, thus find the time delay, accomplish the
orientation. The signal model is proved applicable in the research and development of GPS receiver. Platform: |
Size: 1149952 |
Author:luchan |
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Description: 基于LMS自适应时延估计算法，可以对时间延迟进行估计-Adaptive time delay estimation algorithm based on the LMS, you can estimate the time delay Platform: |
Size: 1024 |
Author:郑微 |
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Description: Generalised Cross Correlation Algorithms. It is useful to estimate the time delay in almost all situations Platform: |
Size: 1024 |
Author:daniel |
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Description: 用互相关法实现时延差估计，时延差是使用TDOA算法实现定位的关键步骤-use cross correlation function to estimate the time delay，and then use time difference to possation Platform: |
Size: 1024 |
Author:litang |
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Description: 关于高阶累积量时延估计方法的研究，本代码描述的是三阶累积量，广义相关法，进行了两者性能相关的比较，最终能求得试验估计值，比较出两者的性能。-The cumulative amount of higher order time delay estimation method studies, the code describes the third-order cumulant, generalized correlation method were compared between the two performance-related, the final test estimate can be obtained, to compare the performance of both. Platform: |
Size: 1024 |
Author:何宝丹 |
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Description: simulink实现的自适应滤波器，基于LMS准则，可以判断位置系统的时延，可以改进-an adatpive filter based on simulink,which can be used to estimate the time delay Platform: |
Size: 9216 |
Author:伟哥 |
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Description: 使用麦克风阵列的声源定位和跟踪已成为室内声学，电话会议系统和声音产生对象的跟踪的关注焦点。估计源定位的当前方法取决于麦克风对之间的传统时间延迟估计技术，然而，忽略环境噪声，来自周围的反射和封闭空间中的混响。在本研究中，设计并开发了基于3D麦克风阵列的声源定位器和跟踪器（ASLT），用于实时源检测和定位。(Acoustic source localization and tracking using microphone arrays has become a focus of interest in room acoustics, teleconference systems and tracking of sound producing objects. The current methods to estimate the source localization depend on conventional time-delay estimation techniques between microphone pairs, however, ignoring the ambient noise, reflections from surrounding and reverberation in the closed space. In this study, an acoustic source localizer and tracker (ASLT) based on 3D microphone array is designed and developed for real time source detection and localization.) Platform: |
Size: 1024 |
Author:爽哦 |
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