SAR

remove noise from one noisy copy of image

communication laboratory exercisez, ASK, PSK and FSK modulations

针对强噪声背景中弱信号检测问题，在传统检测方法基础上，提出了基于联合去噪和频率调制的微弱信号检测方法。搭建自相关和小波阈值变换联合去噪系统，极大程度抑制了噪声对检测结果的不利影响。利用频率可调标准信号调制待测信号频率，使得被测信号与检测系统策动力信号的频率差满足检测条件，打破了利用Ｄｕｆｆｉｎｇ 振子检测系统只能检测与系统策动力频率相近信号的限制。(In order to solve the problem of weak signal detection in strong noise background, based on traditional detection methods, puts forward the method of weak signal detection and denoising based on frequency modulation. The self correlation and wavelet threshold transform combined de-noising system can greatly restrain the adverse effect of noise on the detection results. Use adjustable standard signal modulation signal frequency to be measured frequency, the signal detection system and the driving signal frequency difference meet the test conditions, the system can only break detection signal detection and system driving the similar frequency limit by using Duffing oscillator.)

lanczos算法 计算矩阵特征值 说明要这么长干嘛，说清楚就好了啊(lanczos algorithm for eigvalue)

求解旅行商问题的蚂蚁基本算法源程序 求解Oliver30问题的(solving the traveling salesman problem Ant basic algorithm source code for the Oliver30)

This project includes solving of TSP with Tabu Search Algorithm. It has been codded for final term project

Quadrature amplitude modulation (QAM) is a modulation scheme in which two sinusoidal carriers, one exactly 90 degrees out of phase with respect to the other, are used to transmit data over a given physical channel. One signal is called the I signal, and the other is called the Q signal. Because the orthogonal carriers occupy the same frequency band and differ by a 90 degree phase shift, each can be modulated independently, transmitted over the same frequency band, and separated by demodulation at the receiver. For a given available bandwidth, QAM enables data transmission at twice the rate of standard pulse amplitude modulation (PAM) without any degradation in the bit error ratio (BER).

pdf文档，一种改进的OFDM最大似然符号同步算法。利用导频符号与循环前缀的最大似然算法进行联合同步检测,并可以纠正符号偏差。(An improved symbol synchronization algorithm for OFDM systems is proposed in this paper.)

Simplified Bulirsch-Stoer method for intergration of y = F(x,y).

有关FFT和低通滤波器的实例，简洁实用，很有针对性，已经运行通过(The FFT and low-pass filter example, simple and practical, very targeted, has been running through the)