recluster-in-wsn-by-using-data-aggregation-techni

数字信号的传输方式分为基带传输和带通传输，在实际应用中，大多数信道具有带通特性而不能直接传输基带信号。为了使数字信号在带通信道中传输，必须使用数字基带信号对载波进行调制，以使信号与信道的特性相匹配。这种用数字基带信号控制载波，把数字基带信号变换为数字带通信号的过程称为数字调制。通常使用键控法来实现数字调制，比如对载波的振幅、频率和相位进行键控。(Transmission of digital signals into base band transmission and band-pass transmission, in practice, most of the channel with band-pass characteristics can not directly transmit base-band signal. In order to make the digital signal is transmitted with a communication channel, you must use the digital baseband signal to modulate the carrier to make the signal to match the characteristics of the channel. The digital baseband signal control with a carrier, the digital baseband signal conversion to digital bandpass signal is called digital modulation. Keying method is commonly used digital modulation, such as on the carrier' s amplitude, frequency and phase shift keying.)

机车制动速度提取分析,分析刹车，减速，加速，制动速度以及加速度的变化(Locomotive brake speed extraction and analysis, analysis of braking, deceleration, acceleration, braking and speed of change of acceleration)

Common structures and definitions for FT1000 Flarion Flash OFDM PCMCIA and USB devices.

Savitzky-Golay Filtering of a Speech Signal Smooth the mtlb signal by applying a cubic Savitzky-Golay filter to data frames of length 41.

Discrete cosine transform

QAM调制软比特解调，能够更准确进行解调。(Soft bit QAM modulation and demodulation, can be more accurately demodulated.)

广义预测控制算法（带系统参数辨识）,应用于变风量空调系统中的表冷器系统(Generalized Predictive Control Algorithm (with system parameter identification), used in VAV system cooler system)

源码是MATLAB7.0在图像处理中的应用这本书中的应用实例一：小波图像分解与合成，有关haar小波的，主程序中需要做少许改动运行会成功（可以参照书来改动）。(Source is MATLAB7.0 in the image processing application example in this book I: Wavelet image decomposition and synthesis, the haar wavelet, the main program needs to be done a little change in the run will be successful (you can refer to the book to change).)

说明：  测试ukf（卡尔曼滤波器）的matlab源代码，避免ekf的截断误差，使线性化的结果更加准确。(Test ukf (Kalman filter) of the matlab source code, to avoid ekf the truncation error, so that the result of more accurate linearization.)

说明：  我们可以通过地球两点间的经纬度计算对应两点间的求面距离(We can calculate the face distance between the corresponding two points through the longitude and latitude between the two points of the earth.)