tlab111

详细讲述了直接序列扩频差分锁相环的文章，包含具体的算法结构，并附有仿真结果。(A novel differentially coherent delay-locked loop(DCDLL) for accurate code tracking is proposed for direct sequence spread spectrum systems. Due to the use of the differential decoder and exactly one correlator, the proposed scheme avoids the problems of gain imbalance. The tracking error variance is derived by linear analysis. When the proposed DCDLL scheme is applied in ranging with additive white Gaussian noise (AWGN) channel, the performance of the proposed DCDLL scheme is about 1.4 dB better than that of one-correlator tau–dither loop (TDL), and near that of noncoherent DLL.)

分别对64QAM和BPSK进行蒙特卡洛仿真，并绘出误码率曲线(BPSK and 64QAM are carried out, MonteCarlo simulation, respectively,and draw the curve of bit error rate)

programme de methodes numerique pour la resolution des equations differentielle

Matlab Filter Implementation In this section, we will implement (in matlab) the simplest lowpass filter $displaystyle y(n) = x(n) + x(n-1), n=1,2,ldots,N $ (from Eq.$ ,$(1.1)). For the simplest lowpass filter, we had two program listings: Fig.1.3 listed simplp for filtering one block of data, and Fig.1.4 listed a main program for testing simplp. In matlab, there is a built-in function called filter3.3 which will implement simplp as a special case. The syntax is y = filter (B, A, x) where x is the input signal (a vector of any length), y is the output signal (returned equal in length to x), A is a vector of filter feedback coefficients, and B is a vector of filter feedforward coefficients. The filter function performs the following iteration over the elements of x to implement any causal, finite-order, linear, time-invariant digital filter:3.4

基于两步加权最小二乘的多站时差辐射源定位算法(Two-stage weighted least squares source location)

说明：  [航天]MATLAB命令大全,[航天]MATLAB命令大全([Space] MATLAB command Guinness, [space] MATLAB command Guinness)

用Simulink中NCO模块产生正弦信号的程序，自己写的，采样率180MHz，正弦频率70MHz，可以直接运行。(Using Simulink module generates a sinusoidal signal of NCO program, sample rate 180MHz, sinusoidal frequency 70MHz, can be directly run.)

Double_Polarity_IGBT_Bridges.rar,功率电子领域matlab仿真文件，已经验证过，程序运行正常(Double_Polarity_IGBT_Bridges.rar,Power electronics field matlab simulation file, has already been verified, the normal operating procedures)

Solutions for communication networks 3.(Solutions for communication networks 3. Good for students to understand exercises in the book.)

说明：  FLAMES平台中的空域模型之一，对空间划分有借鉴意义(FLAMES airspace model in one platform, a reference to the space division)