对数极坐标变换

A listening Bluetooth socket for Andriod.

利用matlab仿真实现载波的平方环载波同步,costas环载波同步和符号同步.(achieved quadratic loop carrier synchronization, costas loop synchronization and symbol synchronization within matlab)

说明：  很好用的表格控件源码，可以适用大部分需要用到表格控件的场景(Very Useful Form Control Source Code)

此嗅探器只能在支技RAW SOCKET的机器上运行,而且还得是非交换机的局域网内 代码原创:cooldiyer-this Sniffer technology only in RAW Socket Extension of machines, but also to non LAN switches original code : cooldiyer

OFDM matlab 水声通信程序，带有水声同步头，OFDM调制解调(OFDM matlab acoustic communication program, the first sync with the sound of water, OFDM modulation and demodulation)

研究了一种数字中频 GPS 信号生成方法。给出了数字中频信号数学模型，模型考虑了各种因素对信号的影响。通过导航电文分析，提出信号传播时延、多普勒频移以及信号入射方向的估计方法。给出了中频信号产生的流程，对其中时延的设置，信号的上变频、信号幅度设置以及方向信息的导入进行了阐述。对所生成的信号模型进行了仿真分析，给出了信号产生各个阶段的频谱，对所生成的信号进行了相关捕获。仿真结果表明频谱特征符合理论分析，能够被捕获并找出信号时延从而实现定位。证明该信号模型能作为信号源应用于 GPS接收机研制中。(】The paper discusses a digital IF GPS signal generation method, gives the mathematic model of digital IF signal. This mathematic model takes into account the influence of various factors. Based on analysis of the navigation data, the method to estimate signal propagation time, Doppler frequency shift and the coming angle of signal is proposed. The flow to generate IF signal is given, in which the setting of time delay, the up-frequency conversion, the setting of signal magnitude and the introduction of direction information are expounded. The signal generation model is simulated and analyzed, the spectrum of signal in each stage given, and the correlation capture of the generated signal also done. Simulation indicates that the spectrum is in accord with theoretical analysis the signal could be captured, thus find the time delay, accomplish the orientation. The signal model is proved applicable in the research and development of GPS receiver.)

ICA MatLab Code Appendix D代码,或许对刚接触BSS的有点用(The ICA MatLab Code Appendix D Code, perhaps a little use on first contact BSS)

用matlab/simulink中s函数实现VCO(S function implementation with VCO in simulink)

说明：  NTRIP协议（IP数据网络传输协议）是用于移动RTK改正数据从基地到利用互联网漫游协议。这是特别有用的领域，传统的收音机不好，由于树木或丘陵。NTRIP客户端软件你需要靠近车件。它从互联网上获取数据，并将其发送给漫游者使用的串行端口。这个程序是一个更有用的替代GNSS互联网电台。它通常用在拖拉机驾驶室的小型笔记本或上网本上。互联网接入通常是通过USB无线数据卡从您的手机公司，或系留蓝牙数据能力的手机。VS2010编译。增加了对$GNGGA的支持。(NTRIP (Network Transport of RTCM data over IP) is a protocol for moving RTK correction data from the base to the rover using the Internet. This is especially useful in areas where traditional radios don't work well due to trees or hills. The NTRIP Client is the piece of software you need near the rover. It gets the data from the Internet and sends it out the serial port for the rover to use. This program is a more useful alternative to GNSS Internet Radio. It is typically used on a small laptop or Netbook in the cab of the tractor. Internet access is usually via a USB wireless data card from your cell phone company, or tethered Bluetooth to a data capable phone. VS2010 compilation. Increased support for $GNGGA.)

说明：  截获接收机采用时频分析进行跳频通信的参数估计程序(Intercepting the parameter estimation procedure of the receiver for time-frequency analysis for frequency hopping communication)