SRGUI_matlab

对adc采样信号进行频谱分析，计算信噪比，有效位数等等重要参数(Adc sampling signal for spectrum analysis, calculate SNR, the effective number of bits so the important parameters)

主要是2维的forbild 头部体模的matlab代码(forbild 2d head phantom matlab codes)

一个相当好用的matlab函数，由美国国家可再生能源实验室科研人员设计，可以计算太阳的直射维度和方位角。只要输入时间、观测地点即可。 (This algorithm is based on numerical approximation of the exact equations. The authors of the original paper state that this algorithm should be precise at+/- 0.0003 degrees. I have compared it to NOAA solar table (http://www.srrb.noaa.gov/highlights/sunrise/azel.html) and to USNO solar table (http://aa.usno.navy.mil/data/docs/AltAz.html) and found very good correspondance (up to the precision of those tables), except for large zenith angle, where the refraction by the atmosphere is significant (difference of about 1 degree). Note that in this code the correction for refraction in the atmosphere as been implemented for a temperature of 10C (283 kelvins) and a pressure of 1010 mbar. See the subfunction un_topocentric_zenith_angle_calculation� for a possible modification to explicitely model the effect of temperature and pressure as describe in Reda & Andreas (2003). )

自己写的一个关于非零频的LFM信号的产生，及下混频到零频的代码，有详细的注释(A non-zero frequency LFM signal generation, and under the mixer to the zero-frequency code, with detailed comments)

《Matlab遗传算法工具箱及应用》源码(The Matlab genetic algorithm toolbox and application source code )

实验： 有两个个矩阵a和b，均为2行3列。 重载运算符“+”， （1）使之能用于矩阵的相加。如c=a+b。 （2）如果参与运算的两个操作数中一个是整数即矩阵+3或3+矩阵形式，进行加法运算也能得出和。 （3）定义自减运算符的前置（i++）和后置（++i）重载编写相应程序并验证它的正确性。 (i think it s a goog for many people)

this source code is matlab rectifiers

BPSK调制和解调，matlab环境下仿真实现(BPSK modulation)

IEEE802.16系统规定的信道模型 适用于城市环境的SUI-3模型是WIMAX系统信道建模时的必备(Requirements for IEEE802.16 channel model applicable to the urban environment of the SUI-3 model is a WIMAX system channel modeling essential)

code for finding the bitplanes of the image