New

已知信道状态信息情况下的基于注水法功率分配的OFDM系统 并且和其它系统比较(Known channel state information in case of water injection method based on the OFDM power distribution system and other systems and compare)

说明：  最近看到有人提问怎样用FFT实现频谱分析，我认为能够进行到频谱分析的人，对于系统研究的深度基本上已经相当不错了。本人今天做了一个例程，发给大家参考一下。 历程主要内容(signal_analyzer.rar)如下： test1.txt 第一列为时间t，0.001s为步长；第二列为系统的输入信号；第三列为系统的输出信号。 signal_analyzer.m首先将test1.txt 的数据读入workspace，然后进行FFT，分析出两信号的频率，输出对于输入的幅值衰减（db），输出对输入的相位差。(The question was asked recently to see the realization of how to use FFT spectral analysis, I think that spectral analysis can be carried out to those who study the depth of the system basically is already quite good. Today I made a routine, distributed to Members for reference. The main contents of the course (signal_analyzer.rar) are as follows: test1.txt the first time as t, 0.001s for the step the second as the system input signal the third as a system output signal. signal_analyzer.m first test1.txt data read into workspace, and then proceed to FFT, analysis of the two signal frequency, output amplitude for input attenuation (db), the output of the input phase difference.)

控制系统的超前滞后校正，以及在MATLAB中的实现。需要的人可以看一下。(System Calibration。Lead and lag correction control system in MATLAB. Those who need it can look.)

说明：  这是关于AM调制的matlab程序，对初学调制的人很有帮助，有仿真图片(AM modulation matlab program, beginner modulation helpful, simulation picture)

利用超声导波的形势，测量骨头的厚度，从而判断骨头是否患有骨质疏松症(ultrasonic guided wave measurement in bone)

useful resources in matlab

基于多总线的飞机电气故障模拟实验系统设计Multi-bus-based simulation of aircraft electrical system failure(Multi-bus-based simulation of aircraft electrical system failure)

MEMS control device using matlab

由于传感器自身以及通信延迟等原因, 使得异步多传感器数据融合问题比同步问题的研究更 切合实际。 对连续时间系统在融合中心和各传感器节点分别进行异步离散化处理,离散后过程噪声与测 量噪声以及测量噪声之间相关,虽然相应连续时间系统中的噪声是不相关的。 最后推导了相关噪声情况 下的异步融合算法,仿真结果说明了算法的有效性。(Due to t he r easons of senso rs in it self and the communication delays, the r esearch of t he asy nchr onous multisensor da ta fusion pr oblem is mo re pr actical than t hat o f synchro no us one. Firstly t he continuo us-time system is discr etig ed in the fusio n center and all t he senso r nodes w it h differ ent sample interv al. T hen the measurement no ises are fo und to be co r related with each other and t he pr o- cess noise tho ugh the no ises of t he co rr espo nding continuo us-time sy st em ar e unco rr elat ed. Finally an asy nchr onous fusion algo r ithm is pr esented for the cor r elat ed noises case. Simulatio n results show t he v alidity o f the presented a lg or ithm)

轨迹发生器,自动生成导航轨迹,可用于导航解算。(Trajectory generator, automatically generate the navigation path can be used in navigation solution)