ߵԺУ(sh)̖(ho)̎½̌W(xu)ĸĸՓ
(sh)̖(ho)̎Ϣ(li)I(y)ҪČI(y)A(ch)nnj̖(ho)Ԕ(sh)ַʽʾ̎Փͼg(sh)΄(w)ʹW(xu)@Ô(sh)̖(ho)̎ĻA(ch)Փ㷨DSPܛӲ_(ki)l(f)ĻB(yng)W(xu)(wn)}ͽQ(wn)}
(sh)̖(ho)̎һڴĵһ(g)W(xu)ڻڶW(xu)_(ki)nn̖(ho)cϵy(tng)W(xu)Bm(x)̖(ho)cϵy(tng)ĕr(sh)l(f)lM(jn)һպ˽┵(sh)̖(ho)cϵy(tng)ķeǔ(sh)֞VO(sh)Ӌ(j)ԼMATLABеČ(sh)F(xin)̎ڽ̌W(xu)^(gu)Ҫnϵ֪R(sh)\ڽoW(xu)ͬr(sh)߽̌W(xu)Ч̎Ҫץc(din)֪R(sh)Y(ji)(gu)ӴҪ(du)ͬČW(xu)Ҫʩᘌ(du)@T(mn)n̵đ(yng)(chung)ԡ(sh)`Եc(din)Լ(sh)̖(ho)̎wٰl(f)չҪ(du)̌W(xu)Vă(ni)M(jn)ĺƣڲ(dng)uՓԼO(sh)Ӌ(j)ǰ(yu)Փ֪R(sh)Y(ji)(gu)ӏ(qing)(sh)(yn)Ӗ(xn)eT电(sh)֞VO(sh)Ӌ(j)ȾCӖ(xn)
öýw̌W(xu)ֶκУ@W(wng)j(lu)(sh)ֻƽ_(ti)ĽO(sh)̌W(xu)ṩµĻĶʹný̌W(xu)(ni)ݸSnϢĂfnr(sh)srߌW(xu)^eOĶʹ̌W(xu)|(zh)ͽ̌W(xu)Чʵߡwɏׂ(g)M(jn)иM(jn)
һŇW(xu)ֶνY(ji)ʹ
1.(sh)̖(ho)̎һT(mn)(sh)`ԺՓԶ(qing)ČI(y)nڽ̌W(xu)^(gu)УߌW(xu)W(xu)(x)ķeOȡՓ̌W(xu)͌(sh)(yn)(sh)Ӗ(xn)̌W(xu)Y(ji)ϵĽ̌W(xu)ʹW(xu)W(xu)áy(tng)Փ̌W(xu)ԹݔʽҪʽM(jn)н̌W(xu)ģsW(xu)(x)M(jn)ώnDzv@ʹW(xu)ķeOԵòְl(f)]ְl(f)]W(xu)^܄(dng)(yng)Æl(f)ʽ̌W(xu)ʽώvֻռnÕr(sh)g40%W(xu)ώĻ(dng)}c(x)}Ľռ30%nϬF(xin)(chng)(sh)(yn)cռ30%ͨ^(gu)(du)ԭ֪R(sh)v(x)}ĽԼ(sh)Ӗ(xn)ʹW(xu)ջՓ֪R(sh)ĻA(ch)ϣW(xu)(hu)ͽQ(wn)}ķͬr(sh)Ҳ{(dio)(dng)ͬW(xu)(dng)cR(sh)W(xu)HܵԼČW(xu)(x)ɹl(f)]̌W(xu)L(zhng)(yu)(sh)
2._(ki)չڰ(sh)W(wng)j(lu)YԴͶýwňW(xu)Y(ji)ϵĶʽnʽ(du)(sh)̖(ho)̎һЩͻY(ji)ՓDFT|(zh)F(xin)FT㷨ԭҪúڰ(sh)M(jn)ƌ(do)CW(xu)һώ˼·f(shu)(du)һЩҪDʾeʾԼ֪R(sh)c(din)ѭh(hun)λѭh(hun)eͨ^(gu)ýwDҕl(dng)(hu)ȶNʽ(dng)Ľ̌W(xu)ʽM(jn)л(dng)̌W(xu)(du)n(x)}P(gun)֪R(sh)ĽBԼnÃ(ni)ݵĔU(ku)չtУ@W(wng)j(lu)̌W(xu)ƽ_(ti)(sh)̖(ho)̎n̵(y)ςP(gun)nYԴɺӑՓg
3.(sh)̖(ho)̎MatlabZ(y)ԼDSPg(sh)ЙC(j)ؽY(ji)(li)ʹͬW(xu)?c)ڌW(xu)(x)P(gun)̖(ho)̎Փ֪R(sh)ͨ^(gu)㷨Z(y)M(jn)ܛDSPӲƽ_(ti)ϵԌ(sh)F(xin)@ӣW(xu)ڌW(xu)(x)^(gu)܌W(xu)֪R(sh)ڕ(hu)؞ͨA(ch)nI(y)A(ch)n͌I(y)nЙC(j)P(gun)(lin)(li)ʹW(xu)[ÓW(xu)n̪(d)Եe(cu)`^Ķ߽̌W(xu)|(zh)
Փ㷨č(sh)`oܽY(ji)
1.(sh)(yn)̌W(xu)B(yng)W(xu)Փ(lin)ϵ(sh)HܵҪֶB(yng)c͘I(y)Y(ji)ϵm˲ŲȱٵҪnõՓ̌W(xu)(ni)ݵČW(xu)(x)ҪW(xu)ãW(xu)ͱM(jn)Ќ(sh)(yn)W(xu)(x)Ӗ(xn)nЌW(xu)֪R(sh)õ(sh)HO(sh)Ӌ(j)(sh)(yn)(xing)ĿԹ̰鱳磺FFT(du)̖(ho)lVw늈D̖(ho)̎(sh)̖(ho)̎pl̖(ho)ϵy(tng)еđ(yng)õְl(f)]W(xu)^܄(dng)(sh)(yn)Ӗ(xn)ɼW(xu)(du)W(xu)n֪R(sh)ԭ⣬ͬr(sh)ҲB(yng)ˌW(xu)(d)(wn)}߾O(sh)Ӌ(j){(dio)ԇĻ(qing)W(xu)Ą(dng)
2.ӏ(qing)nO(sh)Ӌ(j)Д(sh)̖(ho)̎cDSPg(sh)ľoܽY(ji)ϡW(xu)`\(yn)W(xu)Ĕ(sh)̖(ho)n֪R(sh)ͨ^(gu)(du)һ(g)^СĔ(sh)̖(ho)̎ȥ(yng)ϵy(tng)O(sh)Ӌ(j)c_(ki)l(f)Z(y)̖(ho)ĞVZ(y)̖(ho)lVϵy(tng)CnO(sh)Ӌ(j)βA̎F(xin)(chng)zW(xu)O(sh)Ӌ(j)Ӳܛ{(dio)ԇY(ji)(j)W(xu)nO(sh)Ӌ(j)΄(w)ru(png)ּ(x)t(j)ƽ^u(png)r(ji)W(xu)ɿ(j)W(xu)ͨ^(gu)ij(g)̰O(sh)Ӌ(j){(dio)ԇ(xi)O(sh)Ӌ(j)(bo)̖(ho)̎㷨O(sh)Ӌ(j)DSPܛӲO(sh)Ӌ(j)^(gu)W(xu)(hu)MatlabDSP_(ki)l(f)ľIJ(xi)c{(dio)ԇ(du)W(xu)M(jn)̖(ho)̎Ĺ̾CӖ(xn)Ӗ(xn)W(xu)ľCO(sh)Ӌ(j)O(sh)Ӌ(j){(dio)ԇͮa(chn)ƷO(sh)Ӌ(j)Ą(chung)B(yng)W(xu)\(yn)W(xu)Փ֪R(sh)(d)ؽQ(sh)H(wn)}W(xu)l(f)](chung)˼SQ(sh)H(wn)}ṩˏV韵O(sh)Ӌ(j)_(ti)
3.B(yng)W(xu)(chung)(sh)`M(jn)лDSP̖̎(ho)̎ϵy(tng)ܛӲO(sh)Ӌ(j)Ӗ(xn)cȫ(gu)W(xu)O(sh)Ӌ(j)(jng)ِY(ji)B(yng)W(xu)(chung)¾O(sh)Ӌ(j)(sh)`nɽ̎vW(xu)nԌW(xu)(jng)ِ(sh)(zhn)}ĿՓČ(xi)}Ŀy(c)ԇc(din)u(png)ȭh(hun)(ji)M
F(xin)g(sh)đ(yng)
1.W(xu)ͨ^(gu)M(jn)ľW(wng)j(lu)g(sh)W(xu)(x)(gu)W(xu)P(gun)(sh)̖(ho)̎n̵һЩP(gun)֪R(sh)ͬr(sh)W(xu)(x)(gu)n̾CϴI(y)Ŀ˷ʽĄ(l)ͬW(xu)ØI(y)r(sh)gxmn}W(xu)֪R(sh)(wn)}(wn)}Q(wn)}(xi)Cψ(bo)W(xu)
2.O(sh)òͬՓӴκͲ֪ͬR(sh)ģKn̰ڻҪ͵ėlMatlabZ(y)nУʹW(xu)һN(dng)ķʽ(x)W(xu)Փ֪R(sh)I(lng)(hu)ͻԭ(sh)`nքe_(ki)O(sh)ܛ(sh)(yn)(xing)ĿMatlabZ(y)Էܛ(sh)(yn)Ӳ(sh)(yn)(xing)ĿDSP_(ki)l(f)Ӳ(sh)(yn)ԼܛӲY(ji)ϵľCό(sh)(yn)MatlabZ(y)ܛDSPӲ_(ki)l(f)Ȏׂ(g)ӴCͬA(ch)ͬW(xu)иõx
ġĸn̵Ŀ˷ʽ
ĸn̿˷ʽеĆһԼȽٿ˵Ăy(tng)ʽ׃Pԇ˞Փ˺O(sh)Ӌ(j)(sh)`˵.Y(ji)ȡ߅߅˵k
(sh)̖(ho)̎n̽̌W(xu)(ni)ݶr(sh)g̣xɢ̖(ho)cϵy(tng)ĕr(sh)l(f)l߀c(din)U˔(sh)֞VO(sh)Ӌ(j)ȾC֪R(sh)@ЩҪW(xu)˽⡢ղMATLABM(jn)зԇ(yn)Ҫný̌W(xu)ɽ̌W(xu)VҪĻ֪R(sh)c(din)Ӗ(xn)͑(yng)һy̌W(xu)΄(w)Ľ̌W(xu)r(sh)g(ni)ɻ̌W(xu)(ni)ݣּԓT(mn)n̵ČI(y)CԼ̌(sh)`ԣͬr(sh)ܿˌW(xu)(du)I(y)yc(din)Mv֪R(sh)c(din)߉ǺP(gun)IĆ(wn)}Qn̽̌W(xu)еìn̿I(lng)W(xu)ѲnðᵽwČ(sh)HO(sh)Ӌ(j)W(xu)HvnеՓ(ni)ݺ͌(sh)HĽY(ji)ϣɴpӛ̌W(xu)еyc(din)c(din)?gu)ČW(xu)̡͡W(xu)^(gu)Q̌W(xu)ЌI(y)ԡCԼ(sh)`ԵĆ(wn)}ͬr(sh)ɽQr(sh)ǧW(xu)(ni)ݶĆ(wn)}(sh)̖(ho)̎ǾCԺՓ֪R(sh)eǔ(sh)W(xu)֪R(sh)(qing)nԓnǰС벿ֵă(ni)ǰġ̖(ho)cϵy(tng)漰^(gu)(sh)̖(ho)̎ԕr(sh)xɢ̖(ho)̎팦(du)cBm(x)̖(ho)cϵy(tng)еӋ(j)㷽̖ͥ(ho)cϵy(tng)дõ˷e֣ڔ(sh)̖(ho)̎оǵ֣ۼ̖ͣ(ho)cϵy(tng)еڔ(sh)̖(ho)̎о׃?yu)ֵܶW(xu)yһD(zhun)׃^(sh)̖(ho)̎еDFTDTFTFFT׃Q֮g(lin)ϵͅ^(q)ey֮y
ԓn̂y(tng)Ŀkvе֪R(sh)c(din)ٽy(tng)һCϿˡ]ԇ@NmĿԇɿ(j)зӳW(xu)(du)ԓnijЩyc(din)c(din)֪R(sh)sˡ(sh)̖(ho)֪̎R(sh)Եc(din)enj(sh)HO(sh)Ӌ(j)ڿ˕r(sh)ֻ^ġc(din)yc(din)ᗉCԡDzƵ҂(yng)ԓÿvһ(g)(d)֪R(sh)c(din)M(jn)мr(sh)Ŀ˙z(yn)@N߅v߅˵ķʽܸõؙz(yn)ÿλW(xu)(du)С֪R(sh)c(din)յֲӰԓ֪R(sh)c(din)c(g)n̵(lin)ϵ
īI(xin)
[1]Z.(sh)̖(ho)̎n̽̌W(xu)ĸĸc(sh)`[J].Ї(gu)20123470-76.
[2]{(ln)(hu)Pļ.(sh)̖(ho)̎n̽̌W(xu)ĸc(sh)`[J].Ї(gu)2012386-87.
[3]p.(sh)̖(ho)̎n̽̌W(xu)ĸc̽[J].n̲̽ģ201119475-76.
[4]ëĝ.(sh)̖(ho)̎nоͽ̌W(xu)о[J].Ї(gu)200812479-80.
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