1 | //#--------------------------------------------------------------------------- |
---|
2 | //# STAttr.cc: A collection of attributes for different telescopes |
---|
3 | //#--------------------------------------------------------------------------- |
---|
4 | //# Copyright (C) 2004 |
---|
5 | //# ATNF |
---|
6 | //# |
---|
7 | //# This program is free software; you can redistribute it and/or modify it |
---|
8 | //# under the terms of the GNU General Public License as published by the Free |
---|
9 | //# Software Foundation; either version 2 of the License, or (at your option) |
---|
10 | //# any later version. |
---|
11 | //# |
---|
12 | //# This program is distributed in the hope that it will be useful, but |
---|
13 | //# WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
14 | //# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
---|
15 | //# Public License for more details. |
---|
16 | //# |
---|
17 | //# You should have received a copy of the GNU General Public License along |
---|
18 | //# with this program; if not, write to the Free Software Foundation, Inc., |
---|
19 | //# 675 Massachusetts Ave, Cambridge, MA 02139, USA. |
---|
20 | //# |
---|
21 | //# Correspondence concerning this software should be addressed as follows: |
---|
22 | //# Internet email: Malte.Marquarding@csiro.au |
---|
23 | //# Postal address: Malte Marquarding, |
---|
24 | //# Australia Telescope National Facility, |
---|
25 | //# P.O. Box 76, |
---|
26 | //# Epping, NSW, 2121, |
---|
27 | //# AUSTRALIA |
---|
28 | //# |
---|
29 | //# $Id: |
---|
30 | //#--------------------------------------------------------------------------- |
---|
31 | |
---|
32 | #include <casa/aips.h> |
---|
33 | #include <casa/Arrays/Vector.h> |
---|
34 | #include <casa/Arrays/ArrayMath.h> |
---|
35 | #include <casa/Exceptions.h> |
---|
36 | #include <casa/Quanta/QC.h> |
---|
37 | #include <casa/Quanta/Quantum.h> |
---|
38 | #include <casa/Quanta/MVTime.h> |
---|
39 | #include <casa/Logging/LogIO.h> |
---|
40 | |
---|
41 | #include <measures/Measures/MEpoch.h> |
---|
42 | |
---|
43 | #include <scimath/Mathematics/InterpolateArray1D.h> |
---|
44 | |
---|
45 | #include "STAttr.h" |
---|
46 | |
---|
47 | using namespace casa; |
---|
48 | using namespace asap; |
---|
49 | |
---|
50 | STAttr::STAttr() |
---|
51 | { |
---|
52 | initData(); |
---|
53 | } |
---|
54 | |
---|
55 | STAttr::STAttr(const STAttr& other) |
---|
56 | { |
---|
57 | (void) other; //suppress unused warning |
---|
58 | initData(); // state just private 'static' data |
---|
59 | } |
---|
60 | |
---|
61 | STAttr& STAttr::operator=(const STAttr& other) |
---|
62 | { |
---|
63 | if (this != &other) { |
---|
64 | ; // state just private 'static' data |
---|
65 | } |
---|
66 | return *this; |
---|
67 | } |
---|
68 | |
---|
69 | STAttr::~STAttr() |
---|
70 | {;} |
---|
71 | |
---|
72 | |
---|
73 | Float STAttr::diameter(Instrument inst) const |
---|
74 | { |
---|
75 | Float D = 1.0; |
---|
76 | switch (inst) { |
---|
77 | case ALMA: |
---|
78 | { |
---|
79 | D = 12.0; |
---|
80 | } |
---|
81 | break; |
---|
82 | |
---|
83 | case ATMOPRA: |
---|
84 | { |
---|
85 | D = 22.0; |
---|
86 | } |
---|
87 | break; |
---|
88 | case ATPKSMB: |
---|
89 | case ATPKSHOH: |
---|
90 | { |
---|
91 | D = 64.0; |
---|
92 | } |
---|
93 | break; |
---|
94 | case TIDBINBILLA: |
---|
95 | { |
---|
96 | D = 70.0; |
---|
97 | } |
---|
98 | break; |
---|
99 | case CEDUNA: |
---|
100 | { |
---|
101 | D = 30.0; |
---|
102 | } |
---|
103 | break; |
---|
104 | case GBT: |
---|
105 | { |
---|
106 | D = 104.9; |
---|
107 | } |
---|
108 | break; |
---|
109 | case HOBART: |
---|
110 | { |
---|
111 | D = 26.0; |
---|
112 | } |
---|
113 | break; |
---|
114 | default: |
---|
115 | { |
---|
116 | throw(AipsError("Unknown instrument")); |
---|
117 | } |
---|
118 | } |
---|
119 | return D; |
---|
120 | } |
---|
121 | |
---|
122 | Vector<Float> STAttr::beamEfficiency(Instrument inst, const MEpoch& dateObs, |
---|
123 | const Vector<Float>& freqs) const |
---|
124 | { |
---|
125 | casa::LogIO os( casa::LogOrigin( "STAttr", "beamEfficiency()" ) ); |
---|
126 | // Look at date where appropriate |
---|
127 | MVTime t(dateObs.getValue()); |
---|
128 | uInt year = t.year(); |
---|
129 | |
---|
130 | Vector<Float> facs(freqs.nelements(),1.0); |
---|
131 | switch (inst) { |
---|
132 | case ATMOPRA: |
---|
133 | { |
---|
134 | if (year<2003) { |
---|
135 | os << "There is no beam efficiency data from before 2003" |
---|
136 | <<" - using 2003 data" << casa::LogIO::POST; |
---|
137 | facs = interp(freqs/1.0e9f, MopEtaBeamX_, MopEtaBeam2003Y_); |
---|
138 | } else if (year==2003) { |
---|
139 | os << "Using beam efficiency data from 2003" << casa::LogIO::POST; |
---|
140 | facs = interp(freqs/1.0e9f, MopEtaBeamX_, MopEtaBeam2003Y_); |
---|
141 | } else { |
---|
142 | os << "Using beam efficiency data from 2004" << casa::LogIO::POST; |
---|
143 | facs = interp(freqs/1.0e9f, MopEtaBeamX_, MopEtaBeam2004Y_); |
---|
144 | } |
---|
145 | } |
---|
146 | break; |
---|
147 | default: |
---|
148 | { |
---|
149 | os << "No beam efficiency data for this instrument - assuming unity" |
---|
150 | << casa::LogIO::POST; |
---|
151 | } |
---|
152 | } |
---|
153 | return facs; |
---|
154 | } |
---|
155 | |
---|
156 | Vector<Float> STAttr::apertureEfficiency(Instrument inst, |
---|
157 | const MEpoch& dateObs, |
---|
158 | const Vector<Float>& freqs) const |
---|
159 | { |
---|
160 | casa::LogIO os( casa::LogOrigin( "STAttr", "apertureEfficiency()" ) ); |
---|
161 | // Look at date where appropriate |
---|
162 | MVTime t(dateObs.getValue()); |
---|
163 | uInt year = t.year(); |
---|
164 | |
---|
165 | Vector<Float> facs(freqs.nelements(),1.0); |
---|
166 | switch (inst) { |
---|
167 | case ATMOPRA: |
---|
168 | { |
---|
169 | if (year<2004) { |
---|
170 | os << "There is no aperture efficiency data from before 2004" |
---|
171 | << " - using 2004 data" << casa::LogIO::POST; |
---|
172 | facs = interp(freqs/1.0e9f, MopEtaApX_, MopEtaAp2004Y_); |
---|
173 | } else { |
---|
174 | os << "Using aperture efficiency data from 2004" << casa::LogIO::POST; |
---|
175 | facs = interp(freqs/1.0e9f, MopEtaApX_, MopEtaAp2004Y_); |
---|
176 | } |
---|
177 | } |
---|
178 | break; |
---|
179 | case TIDBINBILLA: |
---|
180 | { |
---|
181 | facs = interp(freqs/1.0e9f, TidEtaApX_, TidEtaApY_); |
---|
182 | } |
---|
183 | break; |
---|
184 | default: |
---|
185 | { |
---|
186 | os << "No aperture efficiency data for this instrument" |
---|
187 | << " - assuming unity" << casa::LogIO::POST; |
---|
188 | } |
---|
189 | } |
---|
190 | return facs; |
---|
191 | } |
---|
192 | |
---|
193 | Vector<Float> STAttr::JyPerK(Instrument inst, const MEpoch& dateObs, |
---|
194 | const Vector<Float>& freqs) const |
---|
195 | { |
---|
196 | |
---|
197 | // Find what we need |
---|
198 | Vector<Float> etaAp = apertureEfficiency(inst, dateObs, freqs); |
---|
199 | Float D = diameter(inst); |
---|
200 | // Compute it |
---|
201 | Vector<Float> facs(freqs.nelements(),1.0); |
---|
202 | for (uInt i=0; i<freqs.nelements(); i++) { |
---|
203 | facs(i) = STAttr::findJyPerK(etaAp(i), D); |
---|
204 | } |
---|
205 | return facs; |
---|
206 | } |
---|
207 | |
---|
208 | |
---|
209 | Float STAttr::findJyPerK(Float etaAp, Float D) |
---|
210 | // |
---|
211 | // Converts K -> Jy |
---|
212 | // D in m |
---|
213 | // |
---|
214 | { |
---|
215 | Double kb = QC::k.getValue(Unit(String("erg/K"))); |
---|
216 | Float gA = C::pi * D * D / 4.0; |
---|
217 | return (2.0 * 1.0e19 * kb / etaAp / gA); |
---|
218 | } |
---|
219 | |
---|
220 | |
---|
221 | Vector<Float> STAttr::gainElevationPoly(Instrument inst) const |
---|
222 | { |
---|
223 | |
---|
224 | // Look at date where appropriate |
---|
225 | switch (inst) { |
---|
226 | case TIDBINBILLA: |
---|
227 | { |
---|
228 | return TidGainElPoly_.copy(); |
---|
229 | } |
---|
230 | break; |
---|
231 | // assume HOH for K-band |
---|
232 | case ATPKSHOH: |
---|
233 | { |
---|
234 | return ParkesGainElPoly_.copy(); |
---|
235 | } |
---|
236 | break; |
---|
237 | default: |
---|
238 | { |
---|
239 | Vector<Float> t; |
---|
240 | return t.copy(); |
---|
241 | } |
---|
242 | } |
---|
243 | } |
---|
244 | |
---|
245 | std::string STAttr::feedPolType(Instrument inst) const |
---|
246 | { |
---|
247 | std::string type; |
---|
248 | switch (inst) { |
---|
249 | case ATMOPRA: |
---|
250 | case ATPKSMB: |
---|
251 | case ATPKSHOH: |
---|
252 | { |
---|
253 | type = "linear"; |
---|
254 | } |
---|
255 | break; |
---|
256 | case TIDBINBILLA: |
---|
257 | { |
---|
258 | type = "circular"; |
---|
259 | } |
---|
260 | break; |
---|
261 | default: |
---|
262 | { |
---|
263 | type = "linear"; |
---|
264 | } |
---|
265 | } |
---|
266 | return type; |
---|
267 | } |
---|
268 | |
---|
269 | |
---|
270 | // Private |
---|
271 | Vector<Float> STAttr::interp(const Vector<Float>& xOut, |
---|
272 | const Vector<Float>& xIn, |
---|
273 | const Vector<Float>& yIn) const |
---|
274 | { |
---|
275 | Int method = 1; // Linear |
---|
276 | Vector<Float> yOut; |
---|
277 | Vector<Bool> mOut; |
---|
278 | |
---|
279 | Vector<Bool> mIn(xIn.nelements(),True); |
---|
280 | |
---|
281 | InterpolateArray1D<Float,Float>::interpolate(yOut, mOut, xOut, |
---|
282 | xIn, yIn, mIn, |
---|
283 | method, True, True); |
---|
284 | |
---|
285 | return yOut; |
---|
286 | } |
---|
287 | |
---|
288 | void STAttr::initData() |
---|
289 | // |
---|
290 | // Mopra data from Mopra web page |
---|
291 | // Tid data from Tid web page |
---|
292 | // X in GHz |
---|
293 | // |
---|
294 | { |
---|
295 | |
---|
296 | // Beam efficiency |
---|
297 | MopEtaBeamX_.resize(3); |
---|
298 | MopEtaBeamX_(0) = 86.0; |
---|
299 | MopEtaBeamX_(1) = 100.0; |
---|
300 | MopEtaBeamX_(2) = 115.0; |
---|
301 | |
---|
302 | MopEtaBeam2003Y_.resize(3); |
---|
303 | MopEtaBeam2003Y_(0) = 0.39; |
---|
304 | MopEtaBeam2003Y_(1) = 0.37; |
---|
305 | MopEtaBeam2003Y_(2) = 0.37; // replicated from (1) |
---|
306 | |
---|
307 | MopEtaBeam2004Y_.resize(3); |
---|
308 | MopEtaBeam2004Y_(0) = 0.49; |
---|
309 | MopEtaBeam2004Y_(1) = 0.44; |
---|
310 | MopEtaBeam2004Y_(2) = 0.42; |
---|
311 | |
---|
312 | // Aperture efficiency |
---|
313 | MopEtaApX_.resize(2); |
---|
314 | MopEtaApX_(0) = 86.0; |
---|
315 | MopEtaApX_(1) = 115.0; |
---|
316 | |
---|
317 | MopEtaAp2004Y_.resize(2); |
---|
318 | MopEtaAp2004Y_(0) = 0.33; |
---|
319 | MopEtaAp2004Y_(1) = 0.24; |
---|
320 | |
---|
321 | TidEtaApX_.resize(2); |
---|
322 | TidEtaApY_.resize(2); |
---|
323 | TidEtaApX_(0) = 18.0; |
---|
324 | TidEtaApX_(1) = 26.5; |
---|
325 | TidEtaApY_(0) = 0.4848; |
---|
326 | TidEtaApY_(1) = 0.4848; |
---|
327 | |
---|
328 | // Gain elevation correction polynomial coefficients (for elevation |
---|
329 | // in degrees) |
---|
330 | |
---|
331 | TidGainElPoly_.resize(3); |
---|
332 | TidGainElPoly_(0) = 3.58788e-1; |
---|
333 | TidGainElPoly_(1) = 2.87243e-2; |
---|
334 | TidGainElPoly_(2) = -3.219093e-4; |
---|
335 | |
---|
336 | // 2009-09-15 - 13mm (22.2GHz) receiver |
---|
337 | ParkesGainElPoly_.resize(3); |
---|
338 | ParkesGainElPoly_(0) = -0.194031; |
---|
339 | ParkesGainElPoly_(1) = 0.457724e-1; |
---|
340 | ParkesGainElPoly_(2) = -0.438659e-3; |
---|
341 | } |
---|
342 | |
---|
343 | |
---|
344 | Instrument STAttr::convertInstrument(const String& instrument, |
---|
345 | Bool throwIt) |
---|
346 | { |
---|
347 | String t(instrument); |
---|
348 | t.upcase(); |
---|
349 | |
---|
350 | // The strings are what STReader returns, after cunning |
---|
351 | // interrogation of station names... :-( |
---|
352 | Instrument inst = asap::UNKNOWNINST; |
---|
353 | if (t==String("DSS-43")) { |
---|
354 | inst = TIDBINBILLA; |
---|
355 | } else if (t==String("ALMA")) { |
---|
356 | inst = ALMA; |
---|
357 | } else if (t==String("ATPKSMB")) { |
---|
358 | inst = ATPKSMB; |
---|
359 | } else if (t==String("ATPKSHOH")) { |
---|
360 | inst = ATPKSHOH; |
---|
361 | } else if (t==String("ATMOPRA")) { |
---|
362 | inst = ATMOPRA; |
---|
363 | } else if (t==String("CEDUNA")) { |
---|
364 | inst = CEDUNA; |
---|
365 | } else if (t==String("GBT")) { |
---|
366 | inst = GBT; |
---|
367 | } else if (t==String("HOBART")) { |
---|
368 | inst = HOBART; |
---|
369 | } else { |
---|
370 | if (throwIt) { |
---|
371 | throw AipsError("Unrecognized instrument" |
---|
372 | " - use function scan.set_instrument to set"); |
---|
373 | } |
---|
374 | } |
---|
375 | return inst; |
---|
376 | } |
---|