Commit a626ceb8 authored by xin's avatar xin
Browse files

fix PA bug

parent 8709ad0d

getPointingList.py

+33 −3
Original line number Diff line number Diff line
@@ -4,6 +4,33 @@ from pylab import * 
import numpy as np

import math as m

# test



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')
@@ -81,10 +108,11 @@ def producePointingList(out = '' , center = [60,-40], radius = 5): 
    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

        pa = getobsPA(ra, dec) + 90

        # print(ra, dec)

        lon = p[2]

        lat = p[1]

        elip_txt = elip_txt + str(round(ra,6)) + '    ' + str(round(dec,6)) + '    ' + str(round(lon,6)) + '    ' + str(round(lat,6)) + '    -113.4333'

        elip_txt = elip_txt + str(round(ra,6)) + '    ' + str(round(dec,6)) + '    ' + str(round(lon,6)) + '    ' + str(round(lat,6)) + '    ' + str(pa)

        elip_txt = elip_txt + '\n'



    # for i in np.arange(0,num,1):
@@ -124,10 +152,11 @@ def producePointingList2(out = '' , center = [60,-40], radius = 5, survey_file = 
    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

        pa = getobsPA(ra, dec) + 90

        # print(ra, dec)

        lon = p[2]

        lat = p[1]

        elip_txt = elip_txt + str(round(ra,6)) + '    ' + str(round(dec,6)) + '    ' + str(round(lon,6)) + '    ' + str(round(lat,6)) + '    -113.4333'

        elip_txt = elip_txt + str(round(ra,6)) + '    ' + str(round(dec,6)) + '    ' + str(round(lon,6)) + '    ' + str(round(lat,6)) + '    ' + str(pa)



        oTime = p[0]

        satPos, sOrbitId =locateSat(time=oTime, OrbitData = orbitDat, startId = sOrbitId, orbDataLen = orbitDat.shape[0])
@@ -206,9 +235,10 @@ def producePointingList3(out = '' , center = [60,-40], radius = 5, survey_file = 
        ra = (p_.ra*u.degree).value

        dec = (p_.dec*u.degree).value

        # print(ra, dec)

        pa = getobsPA(ra, dec) + 90

        lon = p[2]

        lat = p[1]

        elip_txt = elip_txt + str(round(ra,6)) + '    ' + str(round(dec,6)) + '    ' + str(round(lon,6)) + '    ' + str(round(lat,6)) + '    -113.4333'

        elip_txt = elip_txt + str(round(ra,6)) + '    ' + str(round(dec,6)) + '    ' + str(round(lon,6)) + '    ' + str(round(lat,6)) + '    ' + str(pa)



        oTime = p[0]

        satPos, sOrbitId =locateSat(time=oTime, OrbitData = orbitDat, startId = sOrbitId, orbDataLen = orbitDat.shape[0])