other papers

针对数字卫星常用的 7 种通信信号调制方式(QPSK、8PSK、16QAM、32QAM、64QAM、16APSK、32APSK)，对零中心归一化瞬时幅度谱密度最大值、四次方谱、幅度、高阶累积量四种特征参数进行了分析，提出了一种联合特征参数的信号调制识别方法．(Aiming at seven communication signal modulation modes commonly used in digital satellite (QPSK, 8PSK, 16QAM, 32QAM, 64QAM, 16APSK and 32APSK), four characteristic parameters of zero-center normalized instantaneous amplitude spectral density, quadratic spectrum, amplitude and high-order cumulant are analyzed, and a signal modulation recognition method of joint characteristic parameters is proposed. Method.)

利用六种（SO2、NO2、CO、O3、PM10、PM2.5）污染物浓度数据计算空气质量AQI值(Calculating air quality AQI value by using six kinds of pollutants concentration data of SO2, NO2, CO, O3, PM10 and PM2.5)

主要讲解了航空信道模型的仿真实现和参数选择，给出了各信道场景下的接收信号星座图以及概率密度曲线。(Mainly on the aviation simulation channel model implementation and parameter selection are given scenarios each channel received signal constellation and the probability density curve.)

永磁同步电机dsp各个模块程序，值得借鉴和学习(pmsm dsp)

说明：  TI EVMDM642的DDK源代码,包括video，audi，uart等。(TI EVMDM642 DDK lib source code)

MATLAB代码，产生GNSS导航信号BOC调制的相关频谱特性(The generate of BOC signal AND ITS PDF)

说明：  三维重建是指对三维物体建立适合计算机表示和处理的数学模型,是在计算机环境下对其进行处理、操作和分析其性质的基础,也是在计算机中建立表达客观世界的虚拟现实的关键技术。(Three-dimensional reconstruction refers to the establishment of a mathematical model suitable for computer representation and processing of three-dimensional objects. It is the basis for processing, manipulating and analyzing their properties in the computer environment. It is also the key technology for establishing a virtual reality to express the objective world in the computer.)

假设地下一倾斜界面，地层倾角为15°，地层是均匀的各向同性介质，地震波纵波传播速度为1500m/s，炮检距为0~500m，现绘制出折射波、直达波、反射波的时距曲线图(If the underground inclined interface, dip angle is 15 degrees, the formation is a uniform isotropic medium, seismic wave propagation velocity is 1500m/s, the offset is 0~500m, we draw the refraction wave, direct wave, reflected wave time distance curve)

可以用于画世界地图。这个函数可以通过控制经纬度画不同范围的世界地图。(Can be used to draw the world map. This function can be painted by controlling the latitude and longitude of different areas of the world map.)

在dsk6455开发平台上实现dsp与主机之间的通信实例，主机端采用VC2005开发平台，dsp上采用ccs3.3，内附有在不同频率下通信的测试数据(Dsk6455 development platform in dsp and realize the communication between the host instances, host-side development platform VC2005 used, dsp using ccs3.3, typhoons and rainstorms are in different frequency communications test data)