Discrete_Mathematics

里面含有盲识别BCH码的长度的代码，用于matlAB子程序调试，很好用。(BCH code which contains the length of the blind identification code for matlAB subroutine debugging, very good use.)

压缩传感，压缩感知，压缩采样，稀疏表达，稀疏表示，的入门例子-compressive sensing compressed sensing(compressive sensing compressed sensing)

说明：  月球软着陆仿真：在停泊轨道上，探测器在脉冲制动的作用下，经霍曼变轨，下降到距月面大约 15 公里的近月点，该近月点就是主制动段的初始制动点。主制动段以下是障碍检测与规避和最终着陆段。在主制动段，由于探测器的初始速度很大(1.692km/s)，所以主制动段制导律设计的主要目的就是高效抵消此速度，将探测器导引到期望的末端状态(Lunar soft landing simulation: in the parking orbit, the probe under the action of pulse braking, through the hohmann change of orbit, to descend to about 15 kilometers from the surface of the moon, the near-moon point is the main braking section of the initial braking point. Following is the main braking section for obstacle detection and avoidance and the final landing section. In the main braking section, since the initial velocity of the detector is very large (1.692km/s), the main purpose of the guidance law design of the main braking section is to effectively offset this velocity and guide the detector to the desired terminal state)

河道浅滩演变预测的MATLAB实现，在改视线中采用了BP网络的演变预测。(Forecast the evolution of the river bank MATLAB to achieve, in the line of sight to the BP network used in the evolution of the forecast.)

说明：  经典的遗传算法在matlab环境中的实现(Classical genetic algorithm implementation in matlab environment)

m文件形式的无人机仿真模型，做到状态仿真阶段，后续可根据情况进行纵向和横向的设计(In the form of m file, an UAV simulation model,the state simulation stage have done, following it can be used to design the vertical and horizontal situation)

对数据进行emd分解，可以自适应得到对应的模态分量(Emd decomposition of the data can be adaptive to get the corresponding modal components)

本仿真做了脉冲压缩雷达的处理过程，包括加窗处理和匹配处理，改仿真代码很精致，希望能够帮助大家；(The simulation pulse compression radar processing, including windowing processing and matching processing)

Converts a floating point value to IEEE 754 32 bit binary representation. Sign Bit: 1 Exp: 2 to 9 Frac: 10:32 Single-precision floating-point format is a computer number format that occupies 4 bytes (32 bits) in computer memory and represents a wide dynamic range of values by using a floating point. In IEEE 754-2008 the 32-bit base 2 format is officially referred to as binary32. It was called single in IEEE 754-1985. In older computers, other floating-point formats of 4 bytes were used. For example, the 32-bit floating point bit pattern 1 01111101 00101100000000000000000 is interpreted as the following: (− 1)1 × (1 + 0.34375) × 2(125–127) = -1.34375× 2− 2 = -0.3359375 ​

说明：  磁共振成像仪上的梯度回波序列，我用matlab把时序图画出来了，供大家参考，谢谢(Magnetic resonance imaging gradient echo sequence on, I use matlab to timing out the picture for your reference, thank you)