source: Sophya/trunk/Cosmo/RadioBeam/mdish.cc@ 3936

Last change on this file since 3936 was 3934, checked in by ansari, 15 years ago

optimisation calcul reponse multi-dish ds plan (u,v), Reza 24/12/2010
File size: 10.8 KB
Line 
1// Classes to compute 2D
2// R. Ansari - Nov 2008, May 2010
3
4#include "mdish.h"
5
6
7//--------------------------------------------------
8// -- Four2DResponse class
9//--------------------------------------------------
10// Constructor
11Four2DResponse::Four2DResponse(int typ, double dx, double dy, double lambda)
12 : typ_(typ), dx_((dx>1.e-3)?dx:1.), dy_((dy>1.e-3)?dy:1.)
13{
14 setLambdaRef(lambda);
15 setLambda(lambda);
16}
17
18// Return the response for the wave vecteor (kx,ky)
19double Four2DResponse::Value(double kx, double ky)
20{
21 kx *= lambda_ratio_;
22 ky *= lambda_ratio_;
23 double wk,wkx,wky;
24 switch (typ_)
25 {
26 case 1: // Reponse gaussienne parabole diametre D exp[ - 0.5 (lambda k_g / D )^2 ]
27 wk = sqrt(kx*kx+ky*ky)/dx_;
28 wk = 0.5*wk*wk;
29 return exp(-wk);
30 break;
31 case 2: // Reponse parabole diametre D Triangle <= kmax= 2 pi D / lambda
32 wk = sqrt(kx*kx+ky*ky)/dx_/2./M_PI;
33 return ( (wk<1.)?(1.-wk):0.);
34 break;
35 case 22: // Reponse parabole diametre D Triangle <= kmax= 2 pi D / lambda + trou au centre
36 wk = sqrt(kx*kx+ky*ky)/dx_/2./M_PI;
37 if (wk<0.025) return 39.*wk;
38 else if (wk<1.) return (1.-wk);
39 else return 0.;
40 break;
41 case 3: // Reponse rectangle Dx x Dy Triangle (|kx|,|k_y|) <= (2 pi Dx / lambda, 2 pi Dx / lambda)
42 wkx = fabs(kx)/2./M_PI/dx_;
43 wky = fabs(ky)/2./M_PI/dy_;
44 return ( ((wkx<1.)&&(wky<1.))?((1.-wkx)*(1-wky)):0.);
45 break;
46 default:
47 return 1.;
48 }
49}
50// Return a vector representing the power spectrum (for checking)
51Histo2D Four2DResponse::GetResponse(int nx, int ny)
52{
53 double kxmx = 1.2*DeuxPI*dx_;
54 double kymx = 1.2*DeuxPI*dy_;
55 if (typ_<3) kymx=kxmx;
56 Histo2D h2(-kxmx,kxmx,nx,-kymx,kymx,ny);
57
58 double xbc,ybc;
59 for(int_4 j=0; j<h2.NBinY(); j++)
60 for(int_4 i=0; i<h2.NBinX(); i++) {
61 h2.BinCenter(i,j,xbc,ybc);
62 h2(i,j) = Value(xbc,ybc);
63 }
64 return h2;
65}
66
67//---------------------------------------------------------------
68// -- Four2DRespTable : Reponse tabulee instrumentale ds le plan k_x,k_y (angles theta,phi)
69//---------------------------------------------------------------
70Four2DRespTable::Four2DRespTable()
71 : Four2DResponse(0,1.,1.)
72{
73}
74
75Four2DRespTable::Four2DRespTable(Histo2D const & hrep, double d, double lambda)
76 : Four2DResponse(0,d,d,lambda) , hrep_(hrep)
77{
78}
79
80double Four2DRespTable::Value(double kx, double ky)
81{
82 kx *= lambda_ratio_;
83 ky *= lambda_ratio_;
84 int_4 i,j;
85 if ( (kx<=hrep_.XMin())||(kx>=hrep_.XMax()) ||
86 (ky<=hrep_.YMin())||(ky>=hrep_.YMax()) ) return 0.;
87 hrep_.FindBin(kx, ky, i, j);
88 return hrep_(i, j);
89}
90
91double Four2DRespTable::renormalize(double max)
92{
93 double cmx = hrep_.VMax();
94 hrep_ *= (max/cmx);
95 return cmx;
96}
97
98void Four2DRespTable::writeToPPF(string flnm)
99{
100 DVList dvinfo;
101 dvinfo["DoL"] = dx_;
102 dvinfo["LambdaRef"] = lambdaref_;
103 dvinfo["Lambda"] = lambda_;
104 POutPersist po(flnm);
105 po << hrep_;
106 po << dvinfo;
107}
108
109void Four2DRespTable::readFromPPF(string flnm)
110{
111 PInPersist pin(flnm);
112 DVList dvinfo;
113 pin >> hrep_;
114 pin >> dvinfo;
115 dx_ = dy_ = dvinfo["DoL"];
116 setLambdaRef((double)dvinfo["LambdaRef"]);
117 setLambda((double)dvinfo["Lambda"]);
118}
119
120
121
122//---------------------------------------------------------------
123// -- Four2DRespRatio : rapport de la reponse entre deux objets Four2DResponse
124//---------------------------------------------------------------
125Four2DRespRatio::Four2DRespRatio(Four2DResponse& a, Four2DResponse& b, double divzthr)
126 : Four2DResponse(0, a.D(), a.D()), a_(a), b_(b), divzthr_(divzthr)
127{
128}
129
130double Four2DRespRatio::Value(double kx, double ky)
131{
132 double ra = a_.Value(kx,ky);
133 double rb = b_.Value(kx,ky);
134 if (ra<rb) {
135 if (rb>1.e-39) return(ra/rb);
136 else return 0.;
137 }
138 if (rb<divzthr_) rb=divzthr_;
139 return (ra/rb);
140}
141
142//---------------------------------------------------------------
143//--- Classe simple pour le calcul de rotation
144class Rotation {
145public:
146 Rotation(double tet, double phi)
147 {
148// (Teta,Phi) = Direction de visee
149// Les angles d'Euler correspondants sont Teta, Phi+Pi/2
150// Le Pi/2 vient que les rotations d'euler se font dans l'ordre
151// Autour de oZ d'angle Phi, autour de oN (nouvel axe X) d'angle Teta
152// Autour du nouvel axe Z (x3) d'angle Psi (Psi=0 -> cp=1, sp=0.;
153 double ct = cos(tet);
154 double st = sin(tet);
155 // Le Pi/2 echange les axes X<>Y pour theta=phi=0 !
156 // double cf = cos(phi+M_PI/2);
157 // double sf = sin(phi+M_PI/2);
158 double cf = cos(phi);
159 double sf = sin(phi);
160 double cp = 1.; // cos((double)pO);
161 double sp = 0.; // sin((double)pO);
162 RE[0][0] = cf*cp-sf*ct*sp; RE[0][1] = sf*cp+cf*ct*sp; RE[0][2] = st*sp;
163 RE[1][0] = -cf*sp-sf*ct*cp; RE[1][1] = -sf*sp+cf*ct*cp; RE[1][2] = st*cp;
164 RE[2][0] = sf*st; RE[2][1] = -cf*st; RE[2][2] = ct;
165 }
166 inline void Do(double& x, double& y)
167 {
168 double xx=x;
169 double yy=y;
170 x = RE[0][0]*xx+RE[0][1]*yy;
171 y = RE[1][0]*xx+RE[1][1]*yy;
172 }
173 double RE[3][3];
174};
175
176
177//----------------------------------------------------------------------
178// -- Pour calculer la reponse ds le plan kx,ky d'un system MultiDish
179//----------------------------------------------------------------------
180MultiDish::MultiDish(double lambda, double dmax, vector<Dish>& dishes, bool fgnoauto)
181 : lambda_(lambda), dmax_(dmax), dishes_(dishes), fgnoauto_(fgnoauto)
182{
183 SetThetaPhiRange();
184 SetRespHisNBins();
185 SetBeamNSamples();
186 SetPrtLevel();
187 mcnt_=0;
188}
189
190Histo2D MultiDish::GetResponse()
191{
192 cout << " MultiDish::GetResponse() - NDishes=" << dishes_.size() << " nx=" << nx_ << " ny=" << ny_ << endl;
193 double kmx = 1.2*DeuxPI*dmax_/lambda_;
194 double dkmx = kmx/(double)nx_;
195 double dkmy = kmx/(double)ny_;
196 double kmxx = ((double)nx_+0.5)*dkmx;
197 double kmxy = ((double)ny_+0.5)*dkmy;
198 h2w_.Define(-kmxx,kmxx,2*nx_+1,-kmxy,kmxy,2*ny_+1);
199 h2w_.SetZeroBin(0.,0.);
200
201 double dold = dishes_[0].Diameter()/lambda_;
202 double dolx = dishes_[0].DiameterX()/lambda_;
203 double doly = dishes_[0].DiameterY()/lambda_;
204
205 Four2DResponse rd(2, dold, dold);
206 Four2DResponse rdr(3, dolx, doly);
207
208 if (!dishes_[0].isCircular()) rd = rdr;
209
210 double dtet = thetamax_/(double)ntet_;
211 double dphi = phimax_/(double)nphi_;
212 cout << " MultiDish::GetResponse() - ThetaMax=" << thetamax_ << " NTheta=" << ntet_
213 << " PhiMax=" << phimax_ << " NPhi=" << nphi_ << endl;
214
215 double sumw = 0.;
216 for(int kt=0; kt<ntet_; kt++) {
217 double theta=(double)kt*dtet;
218 for(int jp=0; jp<nphi_; jp++) {
219 double phi=(double)jp*dphi;
220 sumw += CumulResp(rd, theta, phi);
221 if (theta<1.e-9) continue;
222 sumw += CumulResp(rd, theta, -phi);
223 sumw += CumulResp(rd, theta, phi+M_PI);
224 sumw += CumulResp(rd, theta, -(phi+M_PI));
225 }
226 if (prtlev_>0) cout << " MultiDish::GetResponse() done ktheta=" << kt << " / MaxNTheta= " << ntet_ << endl;
227 }
228 double kx1 = DeuxPI*(dishes_[0].DiameterX())/lambda_;
229 double ky1 = DeuxPI*(dishes_[0].DiameterY())/lambda_;
230 int_4 ib,jb;
231 // h2w_ /= h2cnt_;
232 Histo2D h2 = h2w_.Convert();
233 h2.FindBin(kx1, ky1, ib, jb);
234 if ((kx1<0)||(ky1<0)||(kx1>=h2.NBinX())||(ky1>=h2.NBinY())) {
235 cout << " MultiDish::GetResponse[1]/ERROR kx1,ky1=" << kx1 <<","<< ky1 << " --> ib,jb=" << ib <<","<< jb << endl;
236 ib=jb=0;
237 }
238 double vmax=h2.VMax();
239 cout << " MultiDish::GetResponse[1] VMin=" << h2.VMin() << " VMax= " << vmax
240 << " h(0,0)=" << h2(0,0) << " kx1,ky1->h(" << ib <<"," << jb << ")=" << h2(ib,jb) <<endl;
241 // double fnorm=sqrt((double)dishes_.size())/h2.VMax();
242 double fnorm=1.;
243 if (vmax > sumw) {
244 fnorm=(double)dishes_.size()/h2.VMax();
245 cout << " MultiDish::GetResponse[2]/Warning h2.VMax()=" << vmax << " > sumw=" << sumw << endl;
246 cout << " ... NDishes=" << dishes_.size() << " sumw=" << sumw
247 << " Renormalizing x NDishes/VMax " << fnorm << endl;
248 }
249 else {
250 fnorm=(double)dishes_.size()/sumw;
251 cout << " MultiDish::GetResponse[3] NDishes=" << dishes_.size() << " sumw=" << sumw
252 << " Renormalizing x NDishes/sumw " << fnorm << endl;
253 }
254 h2 *= fnorm;
255 cout << " ---- MultiDish::GetResponse/[4] APRES VMin=" << h2.VMin() << " VMax= " << h2.VMax() << " h(0,0)="
256 << h2(0,0) << endl;
257 return h2;
258}
259
260Histo2D MultiDish::PosDist(int nx, int ny, double dmax)
261{
262 if (dmax<1e-3) dmax=nx*dishes_[0].Diameter();
263 double dd = dmax/nx/2.;
264 Histo2D hpos(-dd,dmax+dd,nx+1,-dd,dmax+dd,ny+1);
265 for(size_t i=0; i<NbDishes(); i++) {
266 hpos.Add(dishes_[i].X, dishes_[i].Y);
267 }
268 return hpos;
269}
270
271double MultiDish::AddToHisto(double kx0, double ky0, double x, double y, double w, bool fgfh)
272{
273 double xxp = kx0+x;
274 double yyp = ky0+y;
275 double sumw=0.;
276 sumw += h2w_.Add(xxp, yyp, w, fgfh);
277 double xxm=kx0-x;
278 double yym=ky0-y;
279 // if (xxm>0.) {
280 sumw += h2w_.Add(xxm, yyp, w, fgfh);
281 // if (yym>0.)
282 sumw += h2w_.Add(xxm, yym, w, fgfh);
283 // }
284 // if (yym>0.)
285 sumw += h2w_.Add(xxp, yym, w, fgfh);
286 return sumw;
287}
288
289double MultiDish::CumulResp(Four2DResponse& rd, double theta, double phi)
290{
291 // cout << " MultiDish::CumulResp() theta=" << theta << " phi=" << phi << endl;
292 /*
293 double dx = h2w_.WBinX()/5;
294 double dy = h2w_.WBinY()/5;
295 int nbx = DeuxPI*rd.Dx()/dx+1;
296 int nby = DeuxPI*rd.Dy()/dy+1;
297 */
298 double dx,dy;
299 int nbx=beamnx_;
300 int nby=beamny_;
301 dx = DeuxPI*rd.Dx()/(double)nbx;
302 dy = DeuxPI*rd.Dy()/(double)nby;
303 if (mcnt_==0)
304 cout << " CumulResp() nbx=" << nbx << " nby=" << nby << " dx=" << dx << " dy=" << dy << endl;
305 mcnt_++;
306
307 double sumw = 0.;
308 Rotation rot(theta, phi);
309
310 for(size_t i=0; i<dishes_.size(); i++) {
311 for(size_t j=i; j<dishes_.size(); j++) {
312 double kx0 = DeuxPI*(dishes_[i].X-dishes_[j].X)/lambda_;
313 double ky0 = DeuxPI*(dishes_[i].Y-dishes_[j].Y)/lambda_;
314 rot.Do(kx0, ky0);
315 // if (kx0<0) kx0=-kx0;
316 // if (ky0<0) ky0=-ky0;
317 bool fgfh= (!fgnoauto_ || (dishes_[i].ReflectorId()!=dishes_[j].ReflectorId()));
318 for(int ix=0; ix<nbx; ix++)
319 for(int jy=0; jy<nby; jy++) {
320 double x = ix*dx;
321 double y = jy*dy;
322 if ((ix>0)&&(jy>0)) {
323 sumw += AddToHisto(kx0, ky0, x, y, rd(x,y), fgfh);
324 if (j!=i) sumw += AddToHisto(-kx0, -ky0, x, y, rd(x,y), fgfh);
325 }
326 else {
327 if ((ix==0)&&(jy==0)) {
328 sumw += h2w_.Add(kx0, ky0, rd(0.,0.), fgfh);
329 if (j!=i) sumw += h2w_.Add(-kx0, -ky0, rd(0.,0.), fgfh);
330 }
331 else {
332 double w = rd(x,y);
333 if (ix==0) {
334 sumw += h2w_.Add(kx0, ky0+y, w, fgfh);
335 sumw += h2w_.Add(kx0, ky0-y, w, fgfh);
336 if (j!=i) {
337 sumw += h2w_.Add(-kx0, -ky0+y, w, fgfh);
338 sumw += h2w_.Add(-kx0, -ky0-y, w, fgfh);
339 }
340 }
341 else {
342 sumw += h2w_.Add(kx0+x, ky0, w, fgfh);
343 sumw += h2w_.Add(kx0-x, ky0, w, fgfh);
344 if (j!=i) {
345 sumw += h2w_.Add(-kx0+x, -ky0, w, fgfh);
346 sumw += h2w_.Add(-kx0-x, -ky0, w, fgfh);
347 }
348 }
349 }
350 //
351 }
352 }
353 // if (i%10==0)
354 // cout << " MultiDish::CumulResp() done i=" << i << " / imax=" << dishes_.size()
355 // << " theta=" << theta << " phi=" << phi << endl;
356 }
357 }
358 return sumw;
359}
360
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