TOOLBOX_calib

一本极少非线性有限元基本理论和程序实现的经典教材(An intruoduction nonlinear finite element method )

The reliable data delivery is a challenging task in Wireless Sensor Networks (WSNs) due to dynamic and unpredictable changing behaviors of nodes. The traditional cryptographic and authentication based schemes can’t be adopted due to their associated cost and incapability to counter nodes misbehavior attacks. Recently, trust based solutions have proved to be more effective to address nodes’ misbehavior attacks.

说明：  matlab中用simulink模块实现qpsk调制，包括模块及其主函数 (matlab with simulink module QPSK modulation, including the module and its main function)

耳蜗实质上相当于一个滤波器组，耳蜗的滤波作用是在对数频率尺度上进行的，在1000HZ下，人耳的感知能力与频率成线性关系；而在1000HZ以上，人耳的感知能力与频率不构成线性关系，而更偏向于对数关系，这就使得人耳对低频信号比高频信号更敏感。Mel频率的提出是为了方便人耳对不同频率语音的感知特性的研究。频率与Mel频率的转换公式为(Cochlear substantially equivalent to a filter set, cochlear filter is used on logarithm frequency scale, under the 1000 hz, the perception of the human ear and a linear relationship with frequency In more than 1000 hz, the perception of the human ear does not constitute a linear relationship with frequency, and prefer to logarithmic relationship, which makes the human ear is sensitive to low frequency signal is better than high frequency signal. Mel frequency is put forward in order to facilitate the ear of the study of speech perception characteristics of different frequency. For frequency and Mel frequency conversion formula )

程序作用是用于典型混沌时间序列的混沌特性分析。(Application for analysis chaotic characteristics of typical chaotic time series.)

提取目标图像，根据物体特点，嵌入背景图片中适当的位置处(put objects into the background picture)

matlab 智能算法30例介绍，其中有背景，分析，程序，供大家参考。(matlab introduce intelligent algorithms 30 cases, including the background, analysis, procedures, for your reference.)

system of pv control for basic with error

buck converter implementation in simulink

In a series of papers in recent years new structures for coherent M-PSK (M-ary Phase Shift Keying) receivers were suggested. These include structures for carrier phase detectors for the carrier PLL (Phase Lock Loop), carrier PLL lock detectors, symbol timing error detectors, symbol synchronization PLL lock detectors, carrier and symbol PLL loop filters, and SNR (Signal to Noise Ratio) estimators