array-signal-processingcode

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). )

As we know, the energy needed for sensors should be electrical. So the rst step before start to work is to convert environmental energy to electrical one. Inside the node there are dierent components for sensing the area, collecting data and processing the data. So the main dierent part of this kind of nodes, in compare of WSN nodes, is the power part. Once the stored energy reach to a certain amount, the power supply for micro controller and transceiver will start to work. They will continue to work until they have energy, as soon as the energy nish, they stops and energy storage device start to work to save energy again. The other fact should be consider about EH-WSN node is that the available energy can change in dierent nodes. So every node has its own harvesting rate.

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• Batch least squares for training a Takagi-Sugeno fuzzy system

说明：  Matlab遗传算法工具箱及应用》源码，学习遗传算法编程的朋友很有用，内容讲的很仔细(Matlab Genetic Algorithm Toolbox, and Applications &quot source code, learning genetic algorithm programming friend of useful content speak very carefully)

基于灰度的人眼定位，matlab，积分投影法实现人眼识别(eye detection)

To calculate gravitation field between moon and earth using charge simulation methods

OFDM系统下，系统容量和系统信干比的关系曲线(OFDM system, the system capacity and system signal to interference ratio curve)

OFDM高功率放大器.供学习matlab的同学交流学习 (The Matlab code investigates the harmful effects of high power amplifier on ofdm signals. It is imagined that the amplifier destroy the amplitude of the transmitted signal due to saturation and has no effect on the signal phase. The model is acceptable for solid state amplifier to some extend.)

基于Elman神经网络的预测程序，可用于电力系统短期负荷预测 (Elman neural network-based forecasting process, can be used for short-term load forecasting of power system)