rjjpbwys

基于粒子滤波的雷达检测前跟踪算法，建立新的目标模型和观测模型，提出了线性扩展目标。能够检测1db的弱小目标。(A radar target track-before-detect (TBD) algorithm using particle filter (PF) is presented in this paper. System dynamic model and measurement model are established based on a sequence of radar range-Doppler measurements using the new algorithm. Furthermore, a linear xtended target model is proposed, which is more capable of describing a maneuvering target than the conventional point arget model. The likelihood ratio function of the new model is also derived in this paper. Due to the accumulation of the PF-TBD over time and the effectiveness of the proposed target model, an mproved probability of detection for dim target is obtained. The experimental imulations demonstrate that the proposed method is capable of detecting and tracking a target with SNR of 1 dB robustly. )

说明：  利用MATLAB计算轨道谱密度的程序，含有多种不同计算方法(Program for calculating orbital spectral density using MATLAB)

Negative Selection Agorithm 1. we have a signal which we ll monitor 2. we produce lymphocytes - length lyphocyte as a signal, we take random numbers 3. NSA... we check that lymphocyte is different from signal, if not we random another 4. now we monitor signal, if any value of signal is the same or nearest to lyphocyte - we have anomaly. (Negative Selection Agorithm 1. we have a signal which we ll monitor 2. we produce lymphocytes- length lyphocyte as a signal, we take random numbers 3. NSA... we check that lymphocyte is different from signal, if not we random another 4. now we monitor signal, if any value of signal is the same or nearest to lyphocyte- we have anomaly. )

Histogram of PPM image file

正交频分复用的调制的实现代码，调制只用一种方式(Orthogonal frequency division multiplexing modulation implementation of the code modulation only way to)

this code helps to solve genetic algorithms

60 useful programs on matlab learning.

Different configurations of Half Wave Rectifiers.

采用matlab语言编写，对运动中的人像进行跟踪，显示其运动轨迹，并可以计算人像通过特定位置时的时间（帧）(Matlab language to track the movement portrait display its trajectory, and can calculate the time when the portrait through a specific position (frame))

针对五单元圆型天线阵干涉仪测向系统，分别对等基线和不等基线的结构和相位模糊进行了分析；通过对多基线测量数据的加权处理提高测向精度，提出了权系数的选择方法和测向信号处理算法，其中包括相位差估计、角度变换、解模糊和接收通道误差校正等；计算机仿真结果表明两种结构基线的测向精度非常接近，在全方位、超短波频段内的最大测向误差小于0.10。(eee)