DSP6678GPIO中断程序

【实例简介】本文根据双闭环串级调速系统的数学模型，按照工程设计的方法，在转差率 为O—I范围内，分别对电流调节器和速度调节器的PI参数进行了计算，其参数和动奄性 能指标受转差率 的影响很小，适应较宽的调速范围．本文举出了一十设计实例．并提出 参数测量的实验方法．

这是图像处理课程的作业，对图片进行边缘检测和特征提取，这是我自己实现的MATLAB源代码。

文件包含matlab的源代码m文件，gui文件，文本说明，都很详细，适合本科课程设计，需要的可以下载。

《相控阵雷达技术丛书》七本书中的一本，经典！

jspj2eejshtml电子商务网站源代码

电子电路分析与设计（第三版）答案，要的自己下载

Saber中文教程，适合新手。一步一步教您如何设计开关电源

全新RTCM3.3协议完整版RTCM STANDARD 10403.3DIFFERENTIAL GNSS(GLOBAL NAVIGATION SATELLITE SYSTEMS)SERVICES – VERSION 3DEVELOPED BYRTCM SPECIAL COMMITTEE NO. 104OCTOBER 7, 2016COPYRIGHT©2016 RTCMRadio Technical Commission for Maritime Services1611 N. Kent St., Suite 605Arlington, Virginia 22209-214RTCM Paper 141-2016-SC104-STD000ocRTCMco00c30RTCM 10403. 3, Differential GNSS Global Navigation Satellite Systems)Services- Version 3, October 7, 2016This standard (referred to as version 3 has been developed by rtCm special Committee 104 as a moreefficient alternative to the standards entitled rtcm recommended standards for diffe rentialRecommended Standards for Differential gNss Global Navigation Satellite Systems Service, Version 2.x(Current version is 2. 3, now designated as RTCM 10402. 3. Service providers and vendors represented onthe SC104 Committee wanted a new standard that would be more efficient, easy to use, and more easilyadaptable to new situations. The main complaint was that the version 2. x parity scheme, which useswords with 24 bits of data followed by 6 bits of parity, was wasteful of bandwidth. Another complaint wasthat the parity was not independent from word to word. Still another was that even with so many bitsdevoted to parity the actual integrity of the message was not as high as it should be. Plus, 30-bit wordsare awkward to handle. the new standard version 3 is intended to correct these weaknessesUnlike Version 2. x, this standard does not include tentative messages The messages in Version 3 haveundergone testing for validity and interoperability and are considered to be permanent. amendments tothe standard may change the meaning of reserved bits or provide additional clarifying text, but no changeswill be made in the data fields. Changes will require new messages to be developed. In addition to themessages described in the current standard the committee continues to develop new messages whichare described in separately published amendments and periodically gathered into a new edition of thestandard. RTCM 10403x for dgNSS services is proving useful in supporting highly accurate differentialand kinematic positioning as well as a wide range of navigation applications worldwideNote that Version 3 messages are not compatible with Version 2. x. Since many receivers have beendesigned and programmed for use with Version 2. x messages, rtCm is maintaining both standards0402 3 and 10403, 3 as" standardsVersion 3.0The initial edition consisted primarily of messages designed to support real-time kinematic (RTK)operations. The reason for this emphasis is that rtk operation involves broadcasting a lot of informationand thus benefits the most from an efficient data format. Version 3.0 provided messages that supportGPS and gloNaSs rTK operations including code and carrier phase observables antenna parametersand ancillary system parametersVersion 3. 1(RTCM Standard 10403.1:The next edition, Version 3. 1 (RTCM Standard 10403. 1), incorporated GPS Network Corrections, whichenable a mobile receiver to obtain accurate rtk information valid over a large area. In addition, new GPSand GLoNaSS messages provide orbital parameters to assist in rapid acquisition a Unicode text messageis also provided for the transmission of textual data. Finally a set of messages are reserved for vendorswho want to encapsulate proprietary data in their broadcasts the gps Network Corrections enable amobile receiver to obtain accurate rtk information valid over a large area. the network rtk correctioninformation provided to a rover can be considered as interpolated corrections between the referencestations in the rtk network this interpolation is not perfect and varies with the actual conditions of theatmosphere. A residual interpolation error has to be expected. With sufficient redundancy in the RtKnetwork, the network server process can provide an estimate for residual interpolation errors. Suchquality estimates may be used by the rover to optimize the performance of rtk solutions The values maybe considered by the rover as a priori estimates only with sufficient tracking data available the rovermight be able to judge residual geometric and ionospheric errors itselfVersion 3. 1. Amendment 1:Amendments 1 was an extensive addition that adds rtcm messages containing transformation data andinformation about Coordinate reference Systems. For rtCm data supporting a rtk service, coordinatesare measured within the itrf or a regional realization surve yors and other users of rtk services mustnormally present their results in the coordinates of local datums. Therefore, coordinate transformationsare necessary. by having RTCM messages that contain transformation data and information about theCoordinate reference systems the users of the rtk service can obtain their results in the desired datumwithout any manual operations. the rtk service providers can then ensure that current information forthe computation of the transformations is always used. the convenience of this method will promote theacceptance of rtK servicesVersion 3. 1. amendment 2:Amendment 2 added residual error messages to support the use of Non-Physical or Computed referenceStations in a network rtk environmentVersion 3. 1. amendment 3:Amendment 3 addressed differences in the way gnss receiver manufacturers have implemented carrierphase encoding of some Version 3 messages so that carrier phase observations are in phase for all carrierphases of a specific frequency i e. they correct for quarter cycle phase shifts. others retain the quartercycle offset between the carrier phase observations in the data. this amendment documents the waydifferent manufacturers have handled the phase shift issue and prescribes a uniform approach for futureproducts.∨ersiⅰon3.1, Amendment4:Amendment 4 added sections 3.5.13 on glONASS Network rtK Correction Messages and 3.5. 14 on FKPNetwork Rtk Correction Messages Related revisions were also made elsewhere in the document.Version 3. 1. amendment 5Amendment 5 added section 3. 5. 12 on State Space Representation related revisions are also madeelsewhere in the document, along with some editorial correctionsVersion 3. 2(RTCM Standard 10403.2)Version 3.2 consolidates Version 3. 1 and all five amendments into a new edition, and it adds MultipleSignal Messages (MSM)as well. the Multiple Signal Message (MSm)format generates receiverobservables in the same way for all included satellite systems. the messages include compact and fullmessages for Pseudorange, PhaseRange, Carrier to Noise Ratio (standard and high resolution), andPhaseRangeratea table near the beginning of the standard lists which messages were included in each separate editionand amendment, so it should not be necessary for users to refer to older versions. Multiple signalMessages are a generic format that will be followed for all GNSs systems. version 3 originally consisted ofmessages for GPS and GLONASS, each in their own format Now with the imminent addition of signals forBeiDou, Galileo, and QZSS, as well as new signals provided by modernized GPS and GloNASS satellitesthe need for a consistent generic format became evident. service providers and users are urged to migrateto the MsM messages to make it easier to accommodate new gNss services(See The RTCM Multiple Signal Messages: A New Step in GNSS Data Standardization")Another newmessage is the gloNaSS Bias Information message. This message provides information which is intendedto compensate for the first-order inter-frequency phase range biases introduced by the reference receivercode- phase biasVersion 3.2, Amendment 1:Added Galileo F/NAv Satellite Ephemeris Data(msg. 1045 )and Bds MSM(msgs. 1121-1127)Version 3.2 amendment 2Added qzss ephemeris(msg. 1044 )and QZss MSm (msgs. 1111-1117Version 3. 3(RTCM Standard 10403.3)This new edition adds Satellite-Based Augmentation System Multiple Signal Messages to previouslydopted messages for GPS, GLONASS, Galileo, and QzssA new ephemeris message has been added for BeiDou(BDS)and a new I/NAV ephemeris message hasbeen added for Galileo. The new edition also reserves 100 messages be used exclusively by sc104 fornew message developmentFinally, the new edition makes consolidates previous amendments and makes numerous editorialImprovementsNavstar GPS Service, Version 2. x. Service providers and vendors represented on the scco000c30z1O2co00c30Contentsco00c30

这个是 Java Web 项目开发案例导航 的源代码 很适合新手 练习用

实验 1 ：模拟AM调制解调系统幅度调制解调技术是一种最简单的模拟调制方法，而且通过幅度调制容易理解调制的概念。本实验通过 LabVIEW 编程产生信号频率、幅度等参数可变的基带信号和载波信号，实现 AM 调制和解调，观察参数变化对已调信号的影响。并通过仿真运行整个 AM 调制解调系统，学习掌握代码调试方法，验证程序的正确性。实验 2 ：模拟FM调制解调系统利用 LABVIEW 仿真，产生基带信号频率、载波频率及频偏等参数可变的 FM 调制解调系统，观察参数变化对被调制信号以及其 FFT 功率谱的影响。并通过仿真运行整个 FM 调制解调系统，学习掌握代码调试方法，验证程序代码的正确性。通信原狸与系统实验报告【程序设计】1、总体程序实验1:模拟AM调制解调系统AM信亏波形翌(时)波信号上边带下边带正弦波形(时域)载波幅值制信号湖形图(时域)调制值颗谱测量AM洞制信号波形因(罚信号「·(峰值100000实验2:模拟FM调制解调系统载波率f(Hz)仿真信号3网回區最大偏移量f(Hz仿真信号2信号基带率和b(HzPower SpectruA圆周信号域仿真信号FM调制信号弦10000001000000导数dxdt)Simulate正弦通信原理与系统实验报告2、部分函数图音分函数图Hilbert变换函数部至复数转换复数至极坐标转换交流和直流分量估计归一化波形【实验内容】实验1:模拟AM调制解调系统1、按(P2713)的实验步骤1完成AM调制2、按(P2)的AM解调原理的提示完成AM解调根据实验教程,仿真信号快速ⅥI与频谱测量快速Ⅵ发其最终对话框选项设置如下:信号关型O幅(均方慢)加后的辅轴入信号5.583643幅度(峰直盐r变谱功增密赏占空比5.5050450D2040.60B口加难声声型099999阳果览种子值验时识相对于更开时间吧对(日期与时于均数日100000仍真平集时轴更信号采枉盈重置相位,种子和时标识乐月连续生成生递每次环口整数需吗数信号名称实玩无样数10o信号名称取商在前面板中设置参数如卜:载波幅值调制幅值11.:1戴冷200m1……4006008001000020406080100120140160180200调制频率0250500750100012501500175020000204060801001201401601802004通信原理与系统实验报告设置好参数后,运行程序,结果如图所示载波信号波形(时域)弦M4M制信号波形(时域正弦20020015050-15020020000.020.040.060.080.100.020.040.060.080.1时间时间AM调制信号形图(数城)开F:(值)四4M解号形(时城)5002050150200-15010020030040050000.020.040.060.080.1频率时间分析:观察“AM调制信号波形图(时域)”图可知:经过AM调制将调制信号加载到载波信号上后,形成的包络恰好与基带信号一致。观察“ΔM调制信号波形图(频域)”图可知:最左边的频谱为基带信号的频谱,而右边的三个频谱从左到右依次为下边带fc-fb,载波fe,上边带fc+fb的频谱。观察“AM解调信号波形图(时域)”图可知:解调后的信号与基带信号基本重合,说明运用包络检波法解调信号成功。改变实验参数增大基带信号的幅度,其他参数不变分析:如下图所示,前两幅图分別为增大基带信号幅度前的调制信号的时域图和频域图,后面两幅图为增大基带信号幅度后的调制信号的吋域图和频域图。通过观察图像可发现:增大基带信号樞度,其他参数不变的情况下:调制信号在时域上的幅度随基带信号幅度的增大而増大,而频域上不发生变化。5通信原狸与系统实验报告AM调制信号波形图(时域)AM调制信号波形(频域)应(F·(值)3005020050100200150300200-00.020.040.060.080.1100200300400500时间AM调周制信号波形图(时城)AM调制信号波形图(频域)正弦(FT·(峰值)50200100-1001002003000.020.040.060.080.10100200300400500时间频率增大基带信号的频率,其他参数不变分析:如下图所示,前两幅图分别为增大基带信号频率前旳调訇信号的时域图和频域图,后面两幅图为增大基带信号频率后的调制信号的时域图和频域图。通过观察图像可发现:增大基带信号频率,其他参数不变的情况下:调制信号在时域上的频率随基带信号频率的增大而增大,而频域上也发生了右移。AM调制信号波形图(时域MAM调制信号波形图(城)F·(峰值))M5020010050100200150-30020000.020.040.060.080.10100200300400500时间频率通信原理与系统实验报告AM调制信号波形图(时域)AM调制信号波形图(颈域)正弦·(峰值)50-200100500100-10020030020000.020.040.060.080.10100200300400500时间增大载波信号的幅度,其他参数不变分析:如下图所示,前两幅图分别为增大载波幅度前的调制信号的时域图和频域图,后面两幅图为增大载波幅度后的调制信号的时域图和频域图。通过观察图像可发现:增大载波幅度,其他参数不变的情况下:调制信号在时域上的幅度随载波信号幅度的增大而增大,而频域上不发生变化。AM调制信号波形图(时域)正弦AM调制信号波形圈(频域)H·(峰值)30050200010-500-100-200-150300-20000.020.040.060.080.10100200300400500时间频率AM调制信号波形图(时域)正弦AM制号形(炫)芷奸:()人503000200100细10020015030040020000.020.040.060.080.110200时间频率通信原狸与系统实验报告增大载波信号的频率,其他参数不变分析:如下图所示,前两幅图分别为增大载波频率前的调制信号的时域图和频域图,后面两幅图为增大载波频率后的调制信号的时域图和频域图。通过观察图像可发现:增大载波频率,其他参数不变的情况下:调制信号频率在时域上的频率随载波信号频率的增大而增大,而频域上也发生了右移。AM调制信号波形图(时城正弦AM调制信号波形图(颁域)正弦任FT·(峰值)3002000100200-300-20000.020.040.060.080.10100200300400500时间频率AM调制信号波形图(时域)正凶M制儒号形图(域):(峰)300502001000-100-20030020000.020.040.060.080.10100200300400500时间实验2:模拟FM调制解调系统、按(322.3)实验内容完成FM的调制2、按(3223)的实验内容元成FM的解调根据实验教程,仿真信号快速Ⅵ与频谱测量快速ⅥI及其最终对话框选项设置如下通信原理与系统实验报告配雪仿真信号[真台号3]生造量结果预范所选到早3、02691幅度(蜂值位(D功幸造C线性O功率造移量占空比O092Hanning君果候嚣均方根对测经开始间保待O姆对(日期与时词)半均数目C仿真菜对钟申仨号·以可达到最速度运行里相位种了和时标日相位軍预100日)来用端牛应信号名称O当平均时用信号类型名偏学会称□开相位150200250300350400450500阳确定联群取篇□帮数在前面板中设置参数如下:基带频率fb(Hz)载波频率fe(Hz)20000400006000080000100000110000033000005000007000009000001E+6最大偏移量t(Hz)20000400006000080000100000120000140000160000180000205410设置好参数后,运行程序,结果如图所示基带信号(时域正弦A载反信号(时域)正弦0.5000.5-0.505E-50.00010000150.00025E-50.00010.000150.0002时间时间时城须域FM调制信号(时域正弦0.50.52E-6E-58E-50.00010.000120.000140.000160.000180.0002时司通信原理与系统实验报告时域频域FM调制信号(域)正弦(功率-1002000500000150000025000003500000450000055000006500000750000085000001E+7频率FM解调信号(时域)正弦2E-56E-58E-50.00010.000120000140.000160.000180.0002时间分析:观察“FM调制信号(时域)”图与“FM调制信号(频域)”图可知:经过FM调制后产生的波形与原理相符合;观察“AM解调信号波形图(时域)”图可知:解调后的信号与基带信号基本重合,说明运用非相关包络检波法解调信号成功。改变实验参数≯增大基带信号的频率,其他参数不变分析:如下图所示,前两幅图分别为增大基带信号频率前的调制信号的时域图和频域图,后面两幅图为增大基带信号频率后的调制信号的时域图和频域图。通过观察图像可发现:增大基带信号频率,其他参数不变的情况下:调制信号在时域上的频率随基带信号的频率的增大而增大。