QPSK_64Carrier_fd1000

数模转换，非常实用的的一个模块化程序，可快速嵌入使用(Digital analog conversion)

VISUALB BASIC 制作安装程序 ，更明白，更好用(Setup VISUALB BASIC produced a better understanding and better use)

并口通讯，通过并口控制打字机刻在自行车上，防止自行车丢失(Parallel port communication, and by the parallel port control typewriter engraved on the bike, to prevent the a bike to lost)

用simulink中s函数实现两路切换开关(S function with simulink realization of two-way switch)

VB6.0与变频器的RS485或Modbus通讯，控制变频器的参数设定，运行状态，运行频率，读当前状态，电流，电压，频率，故障等。支持远距离控制。(VB6.0 and drive the RS485 or Modbus communications, control the inverter parameter settings, operation status, operating frequency, read the current state, current, voltage, frequency, fault and so on. Support remote control.)

关于蓝牙编程技术，有这方面需要的，提供给大家参考(Programming on the Bluetooth technology to provide for your reference)

One issue with underwater sensors is how to efficiently transfer large amounts of data collected by the node to an interrogating platform such as an underwater vehicle. It is often impractical to make a physical connection between the node and the vehicle which suggests an acoustic or optical wireless solution. For large amounts of data, the high bandwidth of underwater optical wireless is an advantage. A small, low-cost platform to demonstrate the potential of an optical wireless communications interface for underwater sensor nodes is demonstrated. To enhance the reliability and robustness of the optical wireless communication digital signal processing and error correction techniques are used. The system was tested in 3 and 7.7 meter tanks at 5 Mbps with the turbidity of the water controlled by the addition of Maalox.

DOA估计的算法，其中包括Music算法、空间平滑Music算法、Root-Music算法、ESPRIT算法MVDR（最小方差无失真）算法等，便于比较(DOA estimation algorithms, including algorithms Music, Music spatial smoothing algorithm, Root-Music algorithm, ESPRIT algorithm MVDR (minimum variance distortion) algorithm, to facilitate comparison)

瑞利衰落信道，是一种无线电信号传播环境的统计模型。这种模型假设信号通过无线信道之后，其信号幅度是随机的，即“衰落”，并且其包络服从瑞利分布。这一信道模型能够描述由电离层和对流层反射的短波信道，以及建筑物密集的城市环境。(Rayleigh fading channels, the statistical model of a radio signal propagation environment. This model assumes that after the signal through the radio channel, the signal amplitude is random, ie, the " fading" and the envelope of the Rayleigh distribution. This channel model is able to describe the HF channel reflected by the ionosphere and troposphere, as well as building a dense urban environment.)

说明：  GPS串口通信程序，新建了一个数据库ACCESS，在显示当前GPS信息的同时可以存储以前记录过的信息，保存在数据库中，便于以后查阅。当前GPS信息包括：时间，经度，纬度，速度，真实航向以及磁偏移(GPS serial port communication program, a database of new ACCESS, show the current GPS information can be stored at the same time the information previously recorded, stored in a database for easy access later. The current GPS information including: time, longitude, latitude, speed, true course and magnetic offset)