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 |
|
---|
40 | #include <measures/Measures/MEpoch.h>
|
---|
41 |
|
---|
42 | #include <scimath/Mathematics/InterpolateArray1D.h>
|
---|
43 |
|
---|
44 | #include "STAttr.h"
|
---|
45 |
|
---|
46 | using namespace casa;
|
---|
47 | using namespace asap;
|
---|
48 |
|
---|
49 | STAttr::STAttr()
|
---|
50 | {
|
---|
51 | initData();
|
---|
52 | }
|
---|
53 |
|
---|
54 | STAttr::STAttr(const STAttr& other):
|
---|
55 | Logger()
|
---|
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 |
|
---|
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 | pushLog("There is no beam efficiency data from before 2003"
|
---|
136 | " - using 2003 data");
|
---|
137 | facs = interp(freqs/1.0e9f, MopEtaBeamX_, MopEtaBeam2003Y_);
|
---|
138 | } else if (year==2003) {
|
---|
139 | pushLog("Using beam efficiency data from 2003");
|
---|
140 | facs = interp(freqs/1.0e9f, MopEtaBeamX_, MopEtaBeam2003Y_);
|
---|
141 | } else {
|
---|
142 | pushLog("Using beam efficiency data from 2004");
|
---|
143 | facs = interp(freqs/1.0e9f, MopEtaBeamX_, MopEtaBeam2004Y_);
|
---|
144 | }
|
---|
145 | }
|
---|
146 | break;
|
---|
147 | default:
|
---|
148 | {
|
---|
149 | pushLog("No beam efficiency data for this instrument - assuming unity");
|
---|
150 | }
|
---|
151 | }
|
---|
152 | return facs;
|
---|
153 | }
|
---|
154 |
|
---|
155 | Vector<Float> STAttr::apertureEfficiency(Instrument inst,
|
---|
156 | const MEpoch& dateObs,
|
---|
157 | const Vector<Float>& freqs) const
|
---|
158 | {
|
---|
159 |
|
---|
160 | // Look at date where appropriate
|
---|
161 | MVTime t(dateObs.getValue());
|
---|
162 | uInt year = t.year();
|
---|
163 |
|
---|
164 | Vector<Float> facs(freqs.nelements(),1.0);
|
---|
165 | switch (inst) {
|
---|
166 | case ATMOPRA:
|
---|
167 | {
|
---|
168 | if (year<2004) {
|
---|
169 | pushLog("There is no aperture efficiency data from before 2004"
|
---|
170 | " - using 2004 data");
|
---|
171 | facs = interp(freqs/1.0e9f, MopEtaApX_, MopEtaAp2004Y_);
|
---|
172 | } else {
|
---|
173 | pushLog("Using aperture efficiency data from 2004");
|
---|
174 | facs = interp(freqs/1.0e9f, MopEtaApX_, MopEtaAp2004Y_);
|
---|
175 | }
|
---|
176 | }
|
---|
177 | break;
|
---|
178 | case TIDBINBILLA:
|
---|
179 | {
|
---|
180 | facs = interp(freqs/1.0e9f, TidEtaApX_, TidEtaApY_);
|
---|
181 | }
|
---|
182 | break;
|
---|
183 | default:
|
---|
184 | {
|
---|
185 | pushLog("No aperture efficiency data for this instrument"
|
---|
186 | " - assuming unity");
|
---|
187 | }
|
---|
188 | }
|
---|
189 | return facs;
|
---|
190 | }
|
---|
191 |
|
---|
192 | Vector<Float> STAttr::JyPerK(Instrument inst, const MEpoch& dateObs,
|
---|
193 | const Vector<Float>& freqs) const
|
---|
194 | {
|
---|
195 |
|
---|
196 | // Find what we need
|
---|
197 | Vector<Float> etaAp = apertureEfficiency(inst, dateObs, freqs);
|
---|
198 | Float D = diameter(inst);
|
---|
199 | // Compute it
|
---|
200 | Vector<Float> facs(freqs.nelements(),1.0);
|
---|
201 | for (uInt i=0; i<freqs.nelements(); i++) {
|
---|
202 | facs(i) = STAttr::findJyPerK(etaAp(i), D);
|
---|
203 | }
|
---|
204 | return facs;
|
---|
205 | }
|
---|
206 |
|
---|
207 |
|
---|
208 | Float STAttr::findJyPerK(Float etaAp, Float D)
|
---|
209 | //
|
---|
210 | // Converts K -> Jy
|
---|
211 | // D in m
|
---|
212 | //
|
---|
213 | {
|
---|
214 | Double kb = QC::k.getValue(Unit(String("erg/K")));
|
---|
215 | Float gA = C::pi * D * D / 4.0;
|
---|
216 | return (2.0 * 1.0e19 * kb / etaAp / gA);
|
---|
217 | }
|
---|
218 |
|
---|
219 |
|
---|
220 | Vector<Float> STAttr::gainElevationPoly(Instrument inst) const
|
---|
221 | {
|
---|
222 |
|
---|
223 | // Look at date where appropriate
|
---|
224 | switch (inst) {
|
---|
225 | case TIDBINBILLA:
|
---|
226 | {
|
---|
227 | return TidGainElPoly_.copy();
|
---|
228 | }
|
---|
229 | break;
|
---|
230 | // assume HOH for K-band
|
---|
231 | case ATPKSHOH:
|
---|
232 | {
|
---|
233 | return ParkesGainElPoly_.copy();
|
---|
234 | }
|
---|
235 | break;
|
---|
236 | default:
|
---|
237 | {
|
---|
238 | Vector<Float> t;
|
---|
239 | return t.copy();
|
---|
240 | }
|
---|
241 | }
|
---|
242 | }
|
---|
243 |
|
---|
244 | std::string STAttr::feedPolType(Instrument inst) const
|
---|
245 | {
|
---|
246 | std::string type;
|
---|
247 | switch (inst) {
|
---|
248 | case ATMOPRA:
|
---|
249 | case ATPKSMB:
|
---|
250 | case ATPKSHOH:
|
---|
251 | {
|
---|
252 | type = "linear";
|
---|
253 | }
|
---|
254 | break;
|
---|
255 | case TIDBINBILLA:
|
---|
256 | {
|
---|
257 | type = "circular";
|
---|
258 | }
|
---|
259 | break;
|
---|
260 | default:
|
---|
261 | {
|
---|
262 | type = "linear";
|
---|
263 | }
|
---|
264 | }
|
---|
265 | return type;
|
---|
266 | }
|
---|
267 |
|
---|
268 |
|
---|
269 | // Private
|
---|
270 | Vector<Float> STAttr::interp(const Vector<Float>& xOut,
|
---|
271 | const Vector<Float>& xIn,
|
---|
272 | const Vector<Float>& yIn) const
|
---|
273 | {
|
---|
274 | Int method = 1; // Linear
|
---|
275 | Vector<Float> yOut;
|
---|
276 | Vector<Bool> mOut;
|
---|
277 |
|
---|
278 | Vector<Bool> mIn(xIn.nelements(),True);
|
---|
279 |
|
---|
280 | InterpolateArray1D<Float,Float>::interpolate(yOut, mOut, xOut,
|
---|
281 | xIn, yIn, mIn,
|
---|
282 | method, True, True);
|
---|
283 |
|
---|
284 | return yOut;
|
---|
285 | }
|
---|
286 |
|
---|
287 | void STAttr::initData()
|
---|
288 | //
|
---|
289 | // Mopra data from Mopra web page
|
---|
290 | // Tid data from Tid web page
|
---|
291 | // X in GHz
|
---|
292 | //
|
---|
293 | {
|
---|
294 |
|
---|
295 | // Beam efficiency
|
---|
296 | MopEtaBeamX_.resize(3);
|
---|
297 | MopEtaBeamX_(0) = 86.0;
|
---|
298 | MopEtaBeamX_(1) = 100.0;
|
---|
299 | MopEtaBeamX_(2) = 115.0;
|
---|
300 |
|
---|
301 | MopEtaBeam2003Y_.resize(3);
|
---|
302 | MopEtaBeam2003Y_(0) = 0.39;
|
---|
303 | MopEtaBeam2003Y_(1) = 0.37;
|
---|
304 | MopEtaBeam2003Y_(2) = 0.37; // replicated from (1)
|
---|
305 |
|
---|
306 | MopEtaBeam2004Y_.resize(3);
|
---|
307 | MopEtaBeam2004Y_(0) = 0.49;
|
---|
308 | MopEtaBeam2004Y_(1) = 0.44;
|
---|
309 | MopEtaBeam2004Y_(2) = 0.42;
|
---|
310 |
|
---|
311 | // Aperture efficiency
|
---|
312 | MopEtaApX_.resize(2);
|
---|
313 | MopEtaApX_(0) = 86.0;
|
---|
314 | MopEtaApX_(1) = 115.0;
|
---|
315 |
|
---|
316 | MopEtaAp2004Y_.resize(2);
|
---|
317 | MopEtaAp2004Y_(0) = 0.33;
|
---|
318 | MopEtaAp2004Y_(1) = 0.24;
|
---|
319 |
|
---|
320 | TidEtaApX_.resize(2);
|
---|
321 | TidEtaApY_.resize(2);
|
---|
322 | TidEtaApX_(0) = 18.0;
|
---|
323 | TidEtaApX_(1) = 26.5;
|
---|
324 | TidEtaApY_(0) = 0.4848;
|
---|
325 | TidEtaApY_(1) = 0.4848;
|
---|
326 |
|
---|
327 | // Gain elevation correction polynomial coefficients (for elevation
|
---|
328 | // in degrees)
|
---|
329 |
|
---|
330 | TidGainElPoly_.resize(3);
|
---|
331 | TidGainElPoly_(0) = 3.58788e-1;
|
---|
332 | TidGainElPoly_(1) = 2.87243e-2;
|
---|
333 | TidGainElPoly_(2) = -3.219093e-4;
|
---|
334 |
|
---|
335 | // 2009-09-15 - 13mm (22.2GHz) receiver
|
---|
336 | ParkesGainElPoly_.resize(3);
|
---|
337 | ParkesGainElPoly_(0) = -0.194031;
|
---|
338 | ParkesGainElPoly_(1) = 0.457724e-1;
|
---|
339 | ParkesGainElPoly_(2) = -0.438659e-3;
|
---|
340 | }
|
---|
341 |
|
---|
342 |
|
---|
343 | Instrument STAttr::convertInstrument(const String& instrument,
|
---|
344 | Bool throwIt)
|
---|
345 | {
|
---|
346 | String t(instrument);
|
---|
347 | t.upcase();
|
---|
348 |
|
---|
349 | // The strings are what STReader returns, after cunning
|
---|
350 | // interrogation of station names... :-(
|
---|
351 | Instrument inst = asap::UNKNOWNINST;
|
---|
352 | if (t==String("DSS-43")) {
|
---|
353 | inst = TIDBINBILLA;
|
---|
354 | } else if (t==String("ALMA")) {
|
---|
355 | inst = ALMA;
|
---|
356 | } else if (t==String("ATPKSMB")) {
|
---|
357 | inst = ATPKSMB;
|
---|
358 | } else if (t==String("ATPKSHOH")) {
|
---|
359 | inst = ATPKSHOH;
|
---|
360 | } else if (t==String("ATMOPRA")) {
|
---|
361 | inst = ATMOPRA;
|
---|
362 | } else if (t==String("CEDUNA")) {
|
---|
363 | inst = CEDUNA;
|
---|
364 | } else if (t==String("GBT")) {
|
---|
365 | inst = GBT;
|
---|
366 | } else if (t==String("HOBART")) {
|
---|
367 | inst = HOBART;
|
---|
368 | } else {
|
---|
369 | if (throwIt) {
|
---|
370 | throw AipsError("Unrecognized instrument"
|
---|
371 | " - use function scan.set_instrument to set");
|
---|
372 | }
|
---|
373 | }
|
---|
374 | return inst;
|
---|
375 | }
|
---|