IFsignal

基于无线传感器网络的水下目标识别，调制线谱特征提取(Underwater wireless sensor network based object recognition, feature extraction line spectrum modulation)

采用一种新的方法对目标进行跟踪，有很好的跟踪精度，可用于军事领域。(Using a new method for target tracking, a very good tracking precision, can be used in the military field.)

利用matlab语言实现的DES算法，其特点是加入了UDP发送与接收模块，可以实现加密数据后的网络发送与接受后的解密(The use of DES algorithm matlab language, which is characterized by adding UDP send and receive modules can realize the network send and receive encrypted data after decryption post)

通信系统中4fsk调制方式的仿真与实现，绘出传输波形和接受波形(Simulation and implementation of communication systems 4fsk modulation, transmission waveform and receiving waveform draw)

说明：  负荷频率控制（LFC）是调整系统的频率达到额定值（如50HZ）或/和维持区域联络线交换功率为计划值。频率稳定是电力系统电能质量的一个重要指标。负荷的任意突然变化都有可能导致系统间联络线交换功率的偏差及系统频率的波动。因此，为保证电能质量，需要一个负荷频率控制(load frequency control,LFC)系统，该系统的目的是将系统频率维持在标称值并且尽可能使控制区域之间的未计划的联络线交换功率最小。(Load frequency control (LFC) is to adjust the frequency of the system to reach the rated value (such as 50 Hz) or / and maintain the exchange power of the regional tie line to the planned value. Frequency stability is an important index of power quality in power system. Any sudden change of load may lead to the deviation of power exchange between tie lines and the fluctuation of system frequency. Therefore, in order to ensure the power quality, a load frequency control (LFC) system is needed. The purpose of the system is to maintain the system frequency at the nominal value and minimize the unplanned tie line exchange power between the control areas.)

源码，非常实用，里外都是经过上机调试的源码，可以直接使用！(Source, very useful, both inside and outside the machine through the source debugger, you can directly use!)

说明：  无刷直流电机的matlab/simulink建模(BLDCM the matlab/simulink modeling)

packet error rate for direct wireless link from source wireless body area network node to the coordinator

iir滤波器设计,包括 脉冲不变法和双线性变换法等等等(iir filter design)

palmer s method gor calculatin near surfave velocity by "generalized reciprocal method"