工程测试技术知识点总结

112323(AM))2cos()](*[)(fttxAty(FM))*)]([2cos()(0ttxfAty(PM))])([2cos()(0txftAty45x(t)180fm671A/D,D/AA/D,D/A2A/D,D/A-A/D-D/AA/Dp(t)x(t)x(t)ADR=A/DRR(1/2)RRRA/DD/ANR2N3Fs2Fmaxfd=fs/2fdfdfxfdfifdfxfd=2fd-fx4A/DAD56FFTFFTFFTN=T/dt=T.fs:Xs(fi)fi=i.fs/N,i=012.....N/2781.CMOSCMOS1122A/DD/AA/DA/DD/AA/D3412351fs/nDFTfs/nfs/nDFT267xyxy1238delta:f(x)h(x)f(x)*h(x)12.f(x)h(x)9fm10IIRFIR11f(x)2[-]f(x)=x,-x00,0x)2cos()](*[)(0fttxAty12x,yx,y13(),..,FMLCLCfcFMFM14FIRFIR(1)FIRh[n]hd[n](2)(3)DTFIR(1)(i.e.,)(2)FIR------Parks-McClellan(CAD)15123