Navigation-Experiments

正弦调频信号的时域 频域 模糊度函数的设计(Time domain sinusoidal FM signal frequency-domain ambiguity function design)

说明：  针对高动态 环 境 下 突 发 信 号 检 测 问 题，提 出 基 于 高 阶 项 逐 级 消 去 的 非 线 性 调 频 （ｎｏｎ－ｌｉｎｅａｒ　ｆｒｅｑｕｅｎｃｙ ｍｏｄｕｌａｔｉｏｎ，ＮＬＦＭ）信号参数估计算法，利用合理近似，将其转化为相对简单的线性调频 （ｌｉｎｅａｒ　ｆｒｅｑｕｅｎｃｙ　ｍｏｄｕ－ ｌａｔｉｏｎ，ＬＦＭ）信号参数估计问题，并提出两级调频率逼近法用于ＬＦＭ 信号参数估计，具有原理简明、计算复杂度低 等特点，便于实际工程应用．(To detect burst signals in high dynamic environment, a non-linear frequency modulation (NLFM) based on high-order item elimination is proposed. Modulation (NLFM) signal parameter estimation algorithm, using reasonable approximation, is transformed into a relatively simple linear frequency modulation- The problem of LFM signal parameter estimation is discussed. A two-stage frequency modulation approximation method is proposed for LFM signal parameter estimation. It has simple principle and low computational complexity.)

说明：  计算slotted ALOHA在retransmission中contention window的大小(Calculation of slotted ALOHA in the retransmission of contention window size)

实现LTE下行信道估计，有LS、LMMSE、SVD-MMSE和线性插值、二阶插值、三次样条插值等算法(LTE downlink channel estimation, LS, LMMSE, SVD-MMSE and linear interpolation, second order interpolation, cubic spline interpolation algorithm)

GPS三颗卫星的并行捕获仿真，希望对大家有帮助(GPS 3 satellites capture parallel simulation, in the hope that everyone has to help)

ICP算法,主要用于三维点云数据的配准，最近点迭代算法，可以收敛到局部最小(registration of point cloud data,the iterated close point algorithm)

UWB的BPSK与PPM调制程序,用于超宽带中的BPSK调制与PPM调制的仿真与实现,(The BPSK and PPM modulation program of UWB is used in the simulation and realization of BPSK modulation and PPM modulation in UWB.)

WIgner Ville Distribution for time frequency analysis

说明：  Radon变换的程序，如果需要可以试试~(Radon)

在关联成像中广泛存在的算法，涉及到DGI、GI等算法，这些算法均是线性算法，没有超分辨能力，但是抗造能力比较强，比较通用。(The widely existing algorithms in related imaging involve DGI, GI and other algorithms. These algorithms are linear algorithms without super-resolution, but they have relatively strong anti fabrication capability and are more common.)