radar

二阶锁相环在输入信号为调频信号是的混沌特性分析(Second-order PLL FM signal in the input signal is Chaotic Characteristic Analysis)

脑电信号预处理，在信号处理之前，进行初步的预处理，滤波，减少噪声(nao dian xin hao de yu chu li ,lv bo he qu zao )

本程序由经典９９行拓扑优化程序改编，可以反向进行反向夹持器的拓扑优化( A 105 LINE TOPOLOGY OPTIMIZATION CODE BY OLE SIGMUND, JANUARY 2002 This example is selected from the document of "on the design of compliant mecanisms using topology optimization" Note the input displacement is specified as 5e-3mm here )

机车制动速度提取分析,分析刹车，减速，加速，制动速度以及加速度的变化(Locomotive brake speed extraction and analysis, analysis of braking, deceleration, acceleration, braking and speed of change of acceleration)

A highly comprehensive lecture in understanding basics of electronics

Rebel工具包matlab工具箱,对学习matlab很有帮助(Rebel kit matlab toolbox matlab helpful for learning)

说明：  f-K偏移，是地震成像中用得较多的方法之一。(fK migration, seismic imaging is one of the methods used was higher.)

yulewalker正则方程的功率谱估计(The yulewalker method for PSD)

说明：  任务：设计一个4×2.5Gbit/s 长距离光纤传输系统，并利用OptiSystem 仿真验证。 要求： 1．采用波分复用技术，波长设置以100GHz 为间隔，频率分别为193.1THz、193.2THz、193.3THz、193.4THz，每个波长传输速率为2.5Gbit/s（NRZ），传输距离为300km。采用常规光纤，光纤损耗系数为0.25dB/km。 2．单通道光发送机最大输出功率为0dBm，光接收机的接收光功率不低于－26dBm，过载点为－10dBm。 3．可以采用EDFA 作为线路放大器，其中EDFA 的输入功率限制在－18～2dBm，最大输出功率20dBm，增益范围为13～25dB，噪声指数4.0dB。(Task: Design a 4 x 2.5 Gbit/s long-distance optical fiber transmission system, and use OptiSystem simulation to verify. Requirement: 1. Using wavelength division multiplexing technology, the wavelength is set at 100GHz intervals, with frequencies of 193.1 THz, 193.2 THz, 193.3 THz and 193.4 THz, respectively. The transmission rate of each wavelength is 2.5 Gbit/s (NRZ), and the transmission distance is 300 km. The loss coefficient of conventional optical fibers is 0.25dB/km. 2. The maximum output power of a single-channel optical transmitter is 0 dBm, and the receiving power of an optical receiver is not less than -26 dBm, and the overload point is -10 dBm. 3. EDFA can be used as line amplifier, where the input power of EDFA is limited to - 18-2dBm, the maximum output power is 20dBm, the gain range is 13-25dB, and the noise index is 4.0dB.)

汽车驱动力与行驶阻力平衡图，最高车速，最大爬坡度及相应的附着率，汽车的功率平衡图，等速百公里油耗曲线(Car driving force and driving resistance balance figure, highest speed, the biggest PaPoDu and corresponding adhesion, car power balance figure, constant speed km fuel consumption of the curve )