fangxiangtu

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Stop-and-wait ARQ is a method used in telecommunications to send information between two connected devices. It ensures that information is not lost due to dropped packets and that packets are received in the correct order. It is the simplest kind of automatic repeat-request (ARQ) method. A stop-and-wait ARQ sender sends one frame at a time it is a special case of the general sliding window protocol with both transmit and receive window sizes equal to 1. After sending each frame, the sender doesn t send any further frames until it receives an acknowledgement (ACK) signal. After receiving a good frame, the receiver sends an ACK. If the ACK does not reach the sender before a certain time, known as the timeout, the sender sends the same frame again.

海杂波模拟和循环对消法实现杂波抑制的matlab源程序,包含不同信噪比下的目标回波以及最小二乘实现的滤波器完成杂波抑制(Sea clutter modeling and cycle cancellation method for clutter suppression matlab source code, including different target echo signal to noise ratio as well as the least-squares filter to achieve complete clutter suppression)

FilterTitleOverlay字幕叠加的filter(FilterTitleOverlay subtitles superimposed filter)

LPF 3KHZ implementation in matlab

当前经典的合成孔径雷达成像算法为：RD，CS和RMA。压缩包里有这三个算法的Matlab代码，这些代码对初学者是非常有用的。 (Three classic image formation algorithm for Synthetic Aperture Radar(SAR) are RD, CS, RMA. They can be obtain in Matlab Code, and they may be usefull to beginners. )

Matlab环境下基频提取的代码，比较准确(Code to extract pitch in Matlab，which is comparatively correct)

program is used to transfer data in a secure manner in wireless sensor network

说明：  用matlab编的小程序，希望对大家有所帮助！(using Matlab series of small programs, we hope to help!)

矩形域上的二阶椭圆差分格式，适合偏微分方程的学习，是有限差分格式(this is the equetion about the partial differetial equotion)