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Differential PSK (DPSK) 􀂄 Inexpensive 􀂄 Quadrature Phase Shift Keying (QPSK) 􀂄 Twice as spectrally efficient than BPSK 􀂄 Offset QPSK (OQPSK) 􀂄 reduce envelope variation 􀂄 π/4 QPSK 􀂄 reduces envelope variations to a lesser extent than OQPSK can be noncoherently detected

时频分析工具箱中提供了计算各种线性时频表示和双线性时频分布的函数(Time-frequency analysis toolkit provides the calculation of linear time-frequency representation and bilinear time-frequency distribution function)

说明：  粒子滤波的matlab程序，用于求解航向姿态角(Particle filter matlab program for solving course attitude angle)

数据处理的方差分析码源。经过测试可用，效果好！！(Data processing source code analysis of variance. Tested are available, the effect is good! !)

对系统辨识中白噪声信号的加入影响的分析，并进行在线辨识。(Identification of the system by adding white noise analysis of the impact of )

分四种情况实现fft 分别是时间抽取递归 、时间抽取循环、频率抽取递归和频率抽取循环 以及附带dft的算法描述(Fft realize sub-four cases were collected recursive time, time taken from the cycle, frequency and frequency of samples taken from recursive cycle, as well as incidental DFT algorithm described)

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LCR calculates Level Crossing Rate, that is a number of crossings (in the positive direction) of an input vector through a given threshold vector.

通过MATLAB仿真离散时间系统，研究其时频域特性，加深对离散系统的冲激响应，频率响应分析和零极点分布概念和理解(Discrete-time systems through MATLAB simulation to study the time and frequency domain characteristics to enhance the impulse response of discrete systems, frequency response analysis and zero-pole distribution and understanding of the concept of)

ProTK installation example