unpad

星载合成孔径雷达的回波模拟场景设置程序，以及地固坐标和经纬度坐标的转换Matlab程序(Spaceborne synthetic aperture radar echo simulation scenario setup program, and coordinates and latitude and longitude coordinates to fixed conversion Matlab program)

PATHDEF returns a string that can be used as input to MATLABPATH in order to set the path.

说明：  1．用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图 2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选 3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱 4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图 (1. Using Matlab generated sine wave, rectangular wave, as well as the white noise signal, and display their respective time-domain waveform of Figure 2. FFT to transform, showing their frequency spectrum, including sampling rate, frequency, data length of 3-on-demand. Made of the three signals in root-mean-square maps, power maps, as well as the number of root-mean-square map 4. Fourier Transform IFFT with the restoration of signals, and displays the sinusoidal signal the resumption of time-domain waveform)

说明：  主要介绍了在Matlab中怎样仿真FIR滤波器组的设计(Describes how the simulation in Matlab, the design of FIR filter banks)

实现图像的像素放大功能，插值放大法,例如将一副128*128的图像放大为512*512的图像，希望对大家有所帮助(Image pixel zoom function, interpolation magnify)

very goodvery goodvery goodvery goodvery goodvery goodvery good

turbo码相关的程序 以及3GPP协议 对于研究turbo码方面的朋友有很大帮助，包括编码译码等等程序(turbo codes and procedures related 3GPP protocol for the study of aspects of turbo codes friends are very helpful, including the coding and decoding procedures, etc.)

论文介绍了一种SFS 算法的参数估计及其实现。它在考虑自遮掩影响的情况下, 有效地估计了SFS 算法中涉及的各种控制参数, 并引入亮度约束、灰度梯度约束和可积性约束, 计算出表面高度和表面向量, 实现三维重构。最后还指出了在Matlab 中实现需要注意的问题。(The paper introduced a SFS algorithm parameter estimation and its implementation. It under the condition of considering the covering effect, estimates the SFS algorithm effectively involved in all kinds of control parameters, and introduces brightness constraint, gray level gradient constraint and the integrability of constraints, calculate the surface height and surface vector, realize the three-dimensional reconstruction. Finally, points out the problems requiring attention is realized in Matlab. )

说明：  除了蚁群算法，可用于PID参数优化的智能算法还有很多，比如遗传算法、模拟退火算法、粒子群算法、人工鱼群算法，等等。(In addition to ant colony algorithm can be used to optimize the PID parameters there are many intelligent algorithms, such as genetic algorithms, simulated annealing algorithm, particle swarm optimization, artificial fish-swarm algorithm, and so on.)

LLR仿真 157循环编码 llr译码 BPSK信号高斯噪声(LLR 157 loop simulation BPSK signal decoding coded llr Gaussian noise)