airy.m

可用于对信号的频谱进行分析,希望站长能整理好,以便大家互相学习

% AIRY   Airy娭悢
% 
% W = AIRY(Z) 偼丄Z 偺梫慺偺Airy娭悢 Ai(z) 偱偡丅
% W = AIRY(0,Z) 偼丄AIRY(Z) 偲摨偠偱偡丅
% W = AIRY(1,Z) 偼丄旝學悢 Ai'(z) 偱偡丅
% W = AIRY(2,Z) 偼丄戞2庬Airy娭悢 Bi(z) 偱偡丅
% W = AIRY(3,Z) 偼丄旝學悢 Bi'(z) 偱偡丅
% 堷悢 Z 偑攝楍偺応崌偼丄寢壥偼摨偠僒僀僘偵側傝傑偡丅
%
% [W,IERR] = AIRY(K,Z) 偼丄僄儔乕僼儔僌偺攝楍傕弌椡偟傑偡丅
%     ierr = 1   堷悢偑娫堘偭偰偄傑偡丅
%     ierr = 2   僆乕僶僼儘乕偱Inf傪弌椡偟傑偡丅
%     ierr = 3   堷悢傪尭傜偡偙偲偵傛傝丄惛搙偑掅壓偟傑偡丅
%     ierr = 4   z偑戝偒夁偓傞偙偲偵傛傝丄惛搙偑掅壓偟傑偡丅
%     ierr = 5   廂懇偟傑偣傫丅NaN傪弌椡偟傑偡丅
%
% Airy娭悢偲廋惓Bessel娭悢偺娭學偼丄偮偓偺傛偆偵側傝傑偡丅
%
%     Ai(z) = 1/pi*sqrt(z/3)*K_1/3(zeta)
%     Bi(z) = sqrt(z/3)*(I_-1/3(zeta)+I_1/3(zeta))
%     偙偙偱丄zeta = 2/3*z^(3/2) 偱偡丅
%
% 偙偺M-僼傽僀儖偼丄D. E. Amos偵傛傞Fortran儔僀僽儔儕傊偺MEX僀儞僞
% 僼僃乕僗傪巊梡偟傑偡丅
%
% 嶲峫  BESSELJ, BESSELY, BESSELI, BESSELK.


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