Newer
Older
import astropy.coordinates as coord
from astropy import units as u
from pylab import *
import numpy as np
def transRaDec2D(ra, dec):
x1 = np.cos(dec / 57.2957795) * np.cos(ra / 57.2957795);
y1 = np.cos(dec / 57.2957795) * np.sin(ra / 57.2957795);
z1 = np.sin(dec / 57.2957795);
return np.array([x1, y1, z1])
def getobsPA(ra, dec):
l1 = np.array([0,0,1])
l2 = transRaDec2D(ra, dec)
polar_ec = coord.SkyCoord(0*u.degree, 90*u.degree,frame='barycentrictrueecliptic')
polar_eq = polar_ec.transform_to('icrs')
# print(polar_eq.ra.value,polar_eq.dec.value)
polar_d = transRaDec2D(polar_eq.ra.value, polar_eq.dec.value)
l1l2cross = np.cross(l2,l1)
pdl2cross = np.cross(l2,polar_d)
angle = math.acos(np.dot(l1l2cross,pdl2cross)/(np.linalg.norm(l1l2cross)*np.linalg.norm(pdl2cross)))
angle = (angle)/math.pi*180
# if (ra>90 and ra< 270):
# angle=-angle
return angle
def loadSatOrbitDat(datDir='',fileNum=50):
oData = loadtxt(datDir+'1.txt')
for i in arange(2, fileNum + 1, 1):
tdat = loadtxt(datDir+str(i)+'.txt')
oData = np.vstack((oData,tdat))
return oData
def transRaDec2D(ra, dec):
x1 = np.cos(dec / 57.2957795) * np.cos(ra / 57.2957795);
y1 = np.cos(dec / 57.2957795) * np.sin(ra / 57.2957795);
z1 = np.sin(dec / 57.2957795);
return np.array([x1, y1, z1])
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
def locateSat(time=2459766., OrbitData = None, startId = 0, orbDataLen = 10000):
satPos = np.zeros(3)
nextSid = startId
for i in np.arange(startId, orbDataLen-1, 1):
t1 = OrbitData[i,0]
t2 = OrbitData[i+1,0]
if time>= t1 and time<t2:
if((t2-t1)>130.0/86400.0): # should be 120s, for error, set 120+10s
break
x1 = OrbitData[i,1];
y1 = OrbitData[i,2];
z1 = OrbitData[i,3];
x2 = OrbitData[i+1,1];
y2 = OrbitData[i+1,2];
z2 = OrbitData[i+1,3];
l1 = np.sqrt(x1*x1+y1*y1+z1*z1);
l2 = np.sqrt(x2*x2+y2*y2+z2*z2);
theta = np.arccos((x1*x2+y1*y2+z1*z2)/(l1*l2));
theta1 = (time-t1)/(t2-t1)*theta;
theta2 = theta-theta1;
l = (t2-time)/(t2-t1)*l1+(time-t1)/(t2-t1)*l2;
# // double ef = sin(theta2)/sin(theta1);
x0 = np.sin(theta2)*x1/l1+np.sin(theta1)*x2/l2;
y0 = np.sin(theta2)*y1/l1+np.sin(theta1)*y2/l2;
z0 = np.sin(theta2)*z1/l1+np.sin(theta1)*z2/l2;
l_ = np.sqrt(x0*x0+y0*y0+z0*z0);
satPos[0] = x0*l/l_;
satPos[1] = y0*l/l_;
satPos[2] = z0*l/l_;
nextSid = i
break;
return satPos, nextSid
# @jit()
def producePointingList(out = '' , center = [60,-40], radius = 5):
points = np.loadtxt('skyMapOrSurveyList/sky.dat')
num = points.shape[0]
center = center#ra dec
radius = radius # degree
c_eclip = coord.SkyCoord(points[:,2]*u.degree, points[:,1]*u.degree,frame='barycentrictrueecliptic')
c_equtor = c_eclip.transform_to('icrs')
ids1 = (c_equtor.ra*u.degree).value > center[0]-radius
ids2 = (c_equtor[ids1].ra*u.degree).value < center[0]+radius
ids3 = (c_equtor[ids1][ids2].dec*u.degree).value > center[1]-radius
ids4 = (c_equtor[ids1][ids2][ids3].dec*u.degree).value < center[1]+radius
elip_txt = '# ra dec lon lat angle \n'
for p,p_ in zip(points[ids1][ids2][ids3][ids4],c_equtor[ids1][ids2][ids3][ids4]):
ra = (p_.ra*u.degree).value
dec = (p_.dec*u.degree).value
elip_txt = elip_txt + str(round(ra,6)) + ' ' + str(round(dec,6)) + ' ' + str(round(lon,6)) + ' ' + str(round(lat,6)) + ' ' + str(pa)
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
elip_txt = elip_txt + '\n'
# for i in np.arange(0,num,1):
# # lon,lat
# ra = (c_equtor[i].ra*u.degree).value
# dec = (c_equtor[i].dec*u.degree).value
# if center[0]-radius <ra < center[0]+radius and center[1]-radius<dec<center[1]+radius:
# elip_txt = elip_txt + str(round(ra,6)) + ' ' + str(round(dec,6)) + ' ' + str(round(points[i,2],6)) + ' ' + str(round(points[i,1],6)) + ' -113.4333\n'
pointfn = open(out,'w')
pointfn.write(elip_txt)
pointfn.flush()
pointfn.close()
def producePointingList2(out = '' , center = [60,-40], radius = 5, survey_file = 'skyMapOrSurveyList/E17.5_b17.5_beta_11.6_opt_transtime_1_CMG_1_dp_2_0.25_da_10_Texp_1.5_DEC60_500_0.1_800_1000_+5deg.dat'):
points = np.loadtxt(survey_file)
num = points.shape[0]
center = center#ra dec
radius = radius # degree
c_eclip = coord.SkyCoord(points[:,2]*u.degree, points[:,1]*u.degree,frame='barycentrictrueecliptic')
c_equtor = c_eclip.transform_to('icrs')
ids1 = (c_equtor.ra*u.degree).value > center[0]-radius
ids2 = (c_equtor[ids1].ra*u.degree).value < center[0]+radius
ids3 = (c_equtor[ids1][ids2].dec*u.degree).value > center[1]-radius
ids4 = (c_equtor[ids1][ids2][ids3].dec*u.degree).value < center[1]+radius
obDataDir = 'orbit20160925/'
orbitDat = loadSatOrbitDat(obDataDir,50)
sOrbitId = 0
elip_txt = '# ra dec lon(ecliptic) lat(ecliptic) pos_angle time(julian) sat_x sat_y sat_z sun_x sun_y sun_z moon_x moon_y moon_z sat_vx sat_vy sat_vz exp_time isDeep\n'
for p,p_ in zip(points[ids1][ids2][ids3][ids4],c_equtor[ids1][ids2][ids3][ids4]):
ra = (p_.ra*u.degree).value
dec = (p_.dec*u.degree).value
elip_txt = elip_txt + str(round(ra,6)) + ' ' + str(round(dec,6)) + ' ' + str(round(lon,6)) + ' ' + str(round(lat,6)) + ' ' + str(pa)
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
oTime = p[0]
satPos, sOrbitId =locateSat(time=oTime, OrbitData = orbitDat, startId = sOrbitId, orbDataLen = orbitDat.shape[0])
tempOrbitId = sOrbitId
deltT = 0.1 # unit s
nTime = p[0]+deltT/86400.
satPosN, _ =locateSat(time=nTime, OrbitData = orbitDat, startId = sOrbitId, orbDataLen = orbitDat.shape[0])
sat_v = (satPosN - satPos)/deltT
mm1 = np.sqrt(np.sum(sat_v*sat_v))
mm2 = np.sqrt(np.sum(satPos*satPos))
# print(np.sum(sat_v*satPos)/(mm1*mm2))
# print(sat_v,p[6:9])
if(np.abs(np.sum(sat_v*satPos)/(mm1*mm2))>0.01):
print(oTime)
break
# checkMod = np.sqrt((satPos[0]-p[3])*(satPos[0]-p[3]) + (satPos[1]-p[4])*(satPos[1]-p[4]) + (satPos[2]-p[5])* (satPos[2]-p[5]))
# if (checkMod > 0.01):
# print(oTime, checkMod)
# break
# print(satPos[0]-p[3], satPos[1]-p[4], satPos[2]-p[5])
# if oTime > 2459768:
# break
dat_col = [0,3,4,5,6,7,8,9,10,11,16,14]
for col in dat_col[:-2]:
elip_txt = elip_txt + ' ' + str(p[col])
elip_txt = elip_txt + ' ' + str(sat_v[0]) + ' ' + str(sat_v[1]) + ' ' + str(sat_v[2])
for col in dat_col[-2:]:
elip_txt = elip_txt + ' ' + str(p[col])
elip_txt = elip_txt + '\n'
pointfn = open(out,'w')
pointfn.write(elip_txt)
pointfn.flush()
pointfn.close()
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
def producePointingList3(out = '' , center = [60,-40], radius = 5, survey_file = 'skyMapOrSurveyList/E17.5_b17.5_beta_11.6_opt_transtime_1_CMG_1_dp_2_0.25_da_10_Texp_1.5_DEC60_500_0.1_800_1000_+5deg.dat'):
points = np.loadtxt(survey_file)
num = points.shape[0]
center = center#ra dec
radius = radius # degree
c_eclip = coord.SkyCoord(points[:,2]*u.degree, points[:,1]*u.degree,frame='barycentrictrueecliptic')
c_equtor = c_eclip.transform_to('icrs')
cent_xyz = transRaDec2D(center[0],center[1])
xyz = transRaDec2D((c_equtor.ra*u.degree).value,(c_equtor.dec*u.degree).value)
xyz_dp = xyz[0]*cent_xyz[0] + xyz[1]*cent_xyz[1] + xyz[2]*cent_xyz[2]
ids = xyz_dp>=m.cos(radius*m.pi/180.)
# ids1 = (c_equtor.ra*u.degree).value > center[0]-radius
# ids2 = (c_equtor[ids1].ra*u.degree).value < center[0]+radius
# ids3 = (c_equtor[ids1][ids2].dec*u.degree).value > center[1]-radius
# ids4 = (c_equtor[ids1][ids2][ids3].dec*u.degree).value < center[1]+radius
obDataDir = 'orbit20160925/'
orbitDat = loadSatOrbitDat(obDataDir,50)
sOrbitId = 0
elip_txt = '# ra dec lon(ecliptic) lat(ecliptic) pos_angle time(julian) sat_x sat_y sat_z sun_x sun_y sun_z moon_x moon_y moon_z sat_vx sat_vy sat_vz exp_time isDeep\n'
for p,p_ in zip(points[ids],c_equtor[ids]):
ra = (p_.ra*u.degree).value
dec = (p_.dec*u.degree).value
# print(ra, dec)
elip_txt = elip_txt + str(round(ra,6)) + ' ' + str(round(dec,6)) + ' ' + str(round(lon,6)) + ' ' + str(round(lat,6)) + ' ' + str(pa)
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
oTime = p[0]
satPos, sOrbitId =locateSat(time=oTime, OrbitData = orbitDat, startId = sOrbitId, orbDataLen = orbitDat.shape[0])
tempOrbitId = sOrbitId
deltT = 0.1 # unit s
nTime = p[0]+deltT/86400.
satPosN, _ =locateSat(time=nTime, OrbitData = orbitDat, startId = sOrbitId, orbDataLen = orbitDat.shape[0])
sat_v = (satPosN - satPos)/deltT
mm1 = np.sqrt(np.sum(sat_v*sat_v))
mm2 = np.sqrt(np.sum(satPos*satPos))
# print(np.sum(sat_v*satPos)/(mm1*mm2))
# print(sat_v,p[6:9])
if(np.abs(np.sum(sat_v*satPos)/(mm1*mm2))>0.01):
print(oTime)
break
dat_col = [0,3,4,5,6,7,8,9,10,11,16,14]
for col in dat_col[:-2]:
elip_txt = elip_txt + ' ' + str(p[col])
elip_txt = elip_txt + ' ' + str(sat_v[0]) + ' ' + str(sat_v[1]) + ' ' + str(sat_v[2])
for col in dat_col[-2:]:
elip_txt = elip_txt + ' ' + str(p[col])
elip_txt = elip_txt + '\n'
pointfn = open(out,'w')
pointfn.write(elip_txt)
pointfn.flush()
pointfn.close()
survey_file = 'skyMapOrSurveyList/E17.5_b17.5_beta_11.6_opt_transtime_1_CMG_1_dp_2_0.25_da_10_Texp_1.5_DEC60_500_0.1_800_1000_+5deg.dat'
outFileName = 'pointing_test_NGP_246.5_40_1.dat'
radi = 1.3
# center_pos = [192.8595, 27.1283]
center_pos = [246.5, 40]
producePointingList3(out = outFileName,center = center_pos, radius = radi, survey_file = survey_file)
else:
producePointingList(out = outFileName,center = center_pos, radius = radi)