j_four_1

该函数实现扩展卡尔曼滤波算法，用于非线性状态估计，目标跟踪(EKF filter)

说明：  电流滞环跟踪(CHBPWM)控制技术在simulink上的仿真(Simulation of current hysteresis tracking (chbpwm) control technology on Simulink)

抛物方程Crank-Nicolson格式matlab程序(Parabolic Crank-Nicolson format matlab program)

GN25L98 GPON 的芯片手册 详细记载了芯片的使用方法(GN25L98 GPON chip manual Detailed the use of the chip)

根据居民历年用电量，采用lm算法，对居民未来电量进行短期预测，实现供电部门对电力规划的部署。(According to the electricity consumption of the residents, the LM algorithm is used to predict the future electricity consumption of the residents in short term, so as to achieve the deployment of the power supply department to the electric power planning.)

实现将jpg格式的图片转换为rgb565格式并按照16进制格式存储在txt文档中，网上很难有其他相关的程序，matlab编写经过实际验证很好用(Achieve the jpg format images converted to rgb565 hexadecimal format and stored in accordance with the format in txt document online is difficult to have other related procedures, matlab write-proven good use)

二维光子晶体弯折波导的计算程序，不过只有TM模，但TE模恨容易就能从中重写出来(Two-dimensional photonic crystal waveguide)

用matlab来仿真ofdm调制算法，ofdm技术用于4G无线通信系统。(Ofdm simulation using matlab to modulation algorithm, ofdm technology for 4G wireless communications systems.)

说明：  二分法检索（binary search）又称折半检索，二分法检索的基本思想是设字典中的元素从小到大有序地存放在数组（array）中， 　　首先将给定值key与字典中间位置上元素的关键码(key)比较，如果相等，则检索成功；(Dichotomy search (binary search), also known as binary search, the basic idea of ??dichotomy is set to retrieve the dictionary from small to large elements stored in an orderly array (array), the first key the given value on the middle element of the dictionary The key code (key) comparison, if they are equal, then the retrieval success )

hvac transmission system