各种调制信号频谱图
![什么是调制为什么要调制调制有哪些](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E994735AF01E1BA08A518A56312D262712AA6493C9504202199D4C846887C443139D79E175D8B967D1ED59752AD1B9200919852C43893FBC0CAB35C7EDB556EFD3EBBD1E38648F33E16D78D27879274B0D)
什么是调制为什么要调制调制有哪些
图片尺寸941x1033![电磁波的频率越高越容易传送得更远.所以音频需搭载在高频信号](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E830C24827F5446335EDD1FE5D85C094FA3349DD3120CA64F19E60EAA197F88C9961BD9BA5995AC70FA23C6114E6C8763EE85C9D5BAA58D4D73FF311C9A45CB486CDB90272E08086D83D19DF81452C995C1)
电磁波的频率越高越容易传送得更远.所以音频需搭载在高频信号
图片尺寸642x461![调频信号的频谱(p187) 调频信号的频谱(p187)](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83A80F0DDF74A495FBB14DB3174E433A8BC51FC8EB7D702699FF0579B12CA837A79E7804623664D539DAFB861A8BCD4EAD1BB43B570A5C376966C75A45128C0964FB663DC8E4AF0B600561BD834222D672)
调频信号的频谱(p187) 调频信号的频谱(p187)
图片尺寸1080x810![调制信号,载波信号,fm信号的波形如下观察波形可以发现fm信号在相位上](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A7344942D6441F8E515CBB416AB93D6AFA82FF11A8B2EF49E0635DB363981D07A3DC9DAEBAD79E0DA425D4E34A5E21B6E78F9AA3ED73121F5293CF0C262F209303F3554C42000089CDA830B6F8DA91A70AB)
调制信号,载波信号,fm信号的波形如下观察波形可以发现fm信号在相位上
图片尺寸646x414![彩色电视机基础知识](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E837AF0D0BA2C96FED4EF6877742FD2B00F97577C1998C4A018EEF4F890409F48556788B71DEBD1180FAD9DE1D37C0E0BFD7500FC9897C8B5CDB1EF88A35EE40F6D9EC39B7A020D77751912A312C74E4577)
彩色电视机基础知识
图片尺寸1080x810![基频fm频谱信号](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83324AF15732261D15B2C2E11EB973C519F70FE7F16225E1D3B9F81183E0020EAB716EE8F91FC0E9200C0BC75336BC6DA0F152A2F24ED5E68442D42EBF9C5C85B51D6D4ABAC8FEBC7307D948FD5FE8134F)
基频fm频谱信号
图片尺寸800x409![《数字调制解调—msk》](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9DC486735C792E411C708067EFE118C13AD86C836555077FBA1AC17F0960B68180460068932FF7DF0DFD80A0E9E4555F76E30919D33510D4AF3B37B0C4A5F89BEB96EAFB381AC769BDCE4428B93897288)
《数字调制解调—msk》
图片尺寸875x656![%线性调频信号分为iq两路时域图和频谱的产生matlab仿真代码 %注意:复](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73E3B8A86F072659D95907494FF20648C619DE86E68636C953357EA66A21CDE4E6211E6352566E455388E7EF6EBE4F54CDF243093115348D9145118700A4D17E97FD01089379AFAB798C586F2DE048AE1D)
%线性调频信号分为iq两路时域图和频谱的产生matlab仿真代码 %注意:复
图片尺寸627x489![图2 信号的频率调制(fm)结果.](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E835AE5F12EF451746D4595E61802F476F204DFBC3219AC7499DC9E047274B2DD6361A8057E60507E94936EE9393EB00FC7E8E87E2822764EA107A9348630B9D5EEBFBD337A37699552FC03F15947CE0669)
图2 信号的频率调制(fm)结果.
图片尺寸378x264![模拟信号调制解调----am,fm调制解调原理分析](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83E498FD169AF866AA478D1C6A1156F006C17388A78974FB3A95B240B5BC075B107E59A4D37EB6E7BA488E16A6FD1C5F90528E7B4E50A9F07685ADA1208430D52F0C82D9830953C6A67E38843D6A94A6BD)
模拟信号调制解调----am,fm调制解调原理分析
图片尺寸1091x747![调频的特点](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E8352973BF17E507902534B3D978392CB90A7EB89F0C579981CB78ACCE4D7FF555549C9DA110B234F1DFC5A113862C71D3C32B16DEF838AFFAF7653288FF2AA5AEE93F4BD345BCAC36DAE8FB021B1FC7C6A)
调频的特点
图片尺寸319x420![已调信号的波形图](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E836AD2DCED6AD528C1843A85BC7924E7D09F145EBA2F64839E2124DD5C6BD9633E44EAA884889644970E7234095A11BEC086219DC1E85ED0591F21D474CC5F3574A573CE2CF3EA168B501B05A6EDBDBD0F)
已调信号的波形图
图片尺寸800x955![雷达原理---线性调频信号的时频域分析](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A737F7A3A68472DCE4BB27311A0D4E9DCFF79795EB3C7C315F5E1FADB043B2EE5E190DD24C0F62663CCE758DBE92247F32466ABD558076EDBD6D4DA231E8753E1DEDD7AF8053B1FE0B5F234E7140304768F)
雷达原理---线性调频信号的时频域分析
图片尺寸636x364![信号板发送的调频无线信号的频谱](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83198C8D882EFDDD13C5425BADBD7DE539FFF877CA4C28E8B4A660EF50CFE8A489DA1C3BD05E84DA1C2043FD0ED40B6F7D0B3072FD39A196A4C425EC8F9323B1E1BE8911228E88C8C6042663EED817CC2E)
信号板发送的调频无线信号的频谱
图片尺寸800x409![调制的理解,调制是将调制信号叠加到载波上去还是改变载波的特性?](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A734E40BCB781243333CB4BDC1A45640165E162D75214318C4A8780250DFD300D38AAA9BACD0C169679804CC190EACD0430AC75DA17B8CBE03681330A465D66210112FE7B0E15942503A08CDEBA2A45442C)
调制的理解,调制是将调制信号叠加到载波上去还是改变载波的特性?
图片尺寸500x455![清华老师讲解:调制中的频谱混叠_信号](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E839141350227C8E877BB8FB315AE9990DBD2FA8CF339DFB7ABA72FADD0461E493F278F3E33CEC456BB9CE2D1A9252AF2A323729D0D37B26C3D2A7753947C5A30A073F324FB81200EDA55788D275C4EBE64)
清华老师讲解:调制中的频谱混叠_信号
图片尺寸800x409![2 信号的频谱 1.](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E98541C36F76BF4E9EC2CBE9B6FF868BB995C36B4B4030D8A00C1F388F1B480DC42A2770194EA34E91CCDAEEA709A092D5280EED727F2A29C5643531525CF8DE1AD00F0F34AD4FAECA9FB8B69833AFB5B3)
2 信号的频谱 1.
图片尺寸1080x810![如何具体通过这几种调制解决开头的问题呢?](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73AC1E1BDC07AB3AFCB949894CBF3E5CB99CC60231B820D4C8AC56B482E093EF70652D23F76BBF7F0DE1BB919124CBDB9291EF02D365144451374C6387D302FE5BC94EDC5B24E94FFD9BB12B2AE5766D81)
如何具体通过这几种调制解决开头的问题呢?
图片尺寸1848x681![清华老师讲解:调制中的频谱混叠](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E832B0481124A0E6C09046E18B5B401D961A6D6D7D20D4D32C22DDF05FB5B3B89432DEB1FDAF6FB23E9FD2B108440BBFC4EA75DCBD1AEEDA24850A85137E4A1DF33F8C0DBAAAA0DC93C538CB910C99AA3B1)
清华老师讲解:调制中的频谱混叠
图片尺寸800x409![脉冲压缩雷达最常见的调制信号是线性调频信号,接收时采用匹配滤波器](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A7392BC51CC168430F898C2C8989EC25E0034A36720B17ED2968C037708F1384C0FF515F03559DF787CF5FEB7E0C240A7F0253892311989740BC5C9FF487F234913A6343677FF6E1DE2C2C1BCE96564415B)
脉冲压缩雷达最常见的调制信号是线性调频信号,接收时采用匹配滤波器
图片尺寸749x612