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https://github.com/wassname/simpeg.git
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Lindsey
390 lines
11 KiB
Python
390 lines
11 KiB
Python
from SimPEG import Survey, Problem, Utils, np, sp
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from simpegEM.Utils import SrcUtils
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from simpegEM.Utils.EMUtils import omega
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####################################################
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# Receivers
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####################################################
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class RxFDEM(Survey.BaseRx):
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knownRxTypes = {
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'exr':['e', 'Ex', 'real'],
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'eyr':['e', 'Ey', 'real'],
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'ezr':['e', 'Ez', 'real'],
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'exi':['e', 'Ex', 'imag'],
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'eyi':['e', 'Ey', 'imag'],
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'ezi':['e', 'Ez', 'imag'],
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'bxr':['b', 'Fx', 'real'],
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'byr':['b', 'Fy', 'real'],
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'bzr':['b', 'Fz', 'real'],
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'bxi':['b', 'Fx', 'imag'],
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'byi':['b', 'Fy', 'imag'],
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'bzi':['b', 'Fz', 'imag'],
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'jxr':['j', 'Fx', 'real'],
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'jyr':['j', 'Fy', 'real'],
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'jzr':['j', 'Fz', 'real'],
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'jxi':['j', 'Fx', 'imag'],
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'jyi':['j', 'Fy', 'imag'],
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'jzi':['j', 'Fz', 'imag'],
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'hxr':['h', 'Ex', 'real'],
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'hyr':['h', 'Ey', 'real'],
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'hzr':['h', 'Ez', 'real'],
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'hxi':['h', 'Ex', 'imag'],
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'hyi':['h', 'Ey', 'imag'],
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'hzi':['h', 'Ez', 'imag'],
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}
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radius = None
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def __init__(self, locs, rxType):
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Survey.BaseRx.__init__(self, locs, rxType)
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@property
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def projField(self):
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"""Field Type projection (e.g. e b ...)"""
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return self.knownRxTypes[self.rxType][0]
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@property
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def projGLoc(self):
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"""Grid Location projection (e.g. Ex Fy ...)"""
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return self.knownRxTypes[self.rxType][1]
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@property
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def projComp(self):
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"""Component projection (real/imag)"""
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return self.knownRxTypes[self.rxType][2]
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def projectFields(self, src, mesh, u):
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P = self.getP(mesh)
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u_part_complex = u[src, self.projField]
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# get the real or imag component
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real_or_imag = self.projComp
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u_part = getattr(u_part_complex, real_or_imag)
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return P*u_part
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def projectFieldsDeriv(self, src, mesh, u, v, adjoint=False):
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P = self.getP(mesh)
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if not adjoint:
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Pv_complex = P * v
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real_or_imag = self.projComp
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Pv = getattr(Pv_complex, real_or_imag)
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elif adjoint:
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Pv_real = P.T * v
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real_or_imag = self.projComp
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if real_or_imag == 'imag':
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Pv = 1j*Pv_real
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elif real_or_imag == 'real':
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Pv = Pv_real.astype(complex)
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else:
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raise NotImplementedError('must be real or imag')
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return Pv
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####################################################
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# Sources
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####################################################
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class SrcFDEM(Survey.BaseSrc):
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freq = None
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rxPair = RxFDEM
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def eval(self, prob):
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return self._getS_m(prob), self._getS_e(prob)
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def evalDeriv(self, prob, v, adjoint=None):
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return self._getS_mDeriv(prob,v,adjoint), self._getS_eDeriv(prob,v,adjoint)
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class SrcFDEM_RawVec_e(SrcFDEM):
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"""
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RawVec electric source. It is defined by the user provided vector S_e
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:param numpy.array S_e: electric source term
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:param float freq: frequency
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:param rxList: receiver list
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"""
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def __init__(self, rxList, freq, S_e):
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self.S_e = np.array(S_e,dtype=float)
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self.freq = float(freq)
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SrcFDEM.__init__(self, rxList)
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def _getS_m(self, prob):
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return None
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def _getS_e(self, prob):
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return self.S_e
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def _getS_mDeriv(self, prob, v, adjoint = False):
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return None
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def _getS_eDeriv(self, prob, v, adjoint = False):
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return None
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class SrcFDEM_RawVec_m(SrcFDEM):
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"""
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RawVec magnetic source. It is defined by the user provided vector S_m
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:param numpy.array S_m: magnetic source term
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:param float freq: frequency
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:param rxList: receiver list
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"""
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def __init__(self, rxList, freq, S_m):
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self.S_m = np.array(S_m,dtype=float)
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self.freq = float(freq)
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SrcFDEM.__init__(self, rxList)
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def _getS_m(self, prob):
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return self.S_m
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def _getS_e(self, prob):
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return None
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def _getS_mDeriv(self, prob, v, adjoint = False):
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return None
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def _getS_eDeriv(self, prob, v, adjoint = False):
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return None
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class SrcFDEM_RawVec(SrcFDEM):
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"""
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RawVec source. It is defined by the user provided vectors S_m, S_e
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:param numpy.array S_m: magnetic source term
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:param numpy.array S_e: electric source term
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:param float freq: frequency
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:param rxList: receiver list
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"""
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def __init__(self, rxList, freq, S_m, S_e):
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self.S_m = np.array(S_m,dtype=float)
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self.S_e = np.array(S_e,dtype=float)
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self.freq = float(freq)
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SrcFDEM.__init__(self, rxList)
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def _getS_m(self,prob):
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return self.S_m
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def _getS_e(self,prob):
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return self.S_e
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def _getS_mDeriv(self, prob, v, adjoint = False):
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return None
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def _getS_eDeriv(self, prob, v, adjoint = False):
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return None
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class SrcFDEM_MagDipole(SrcFDEM):
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#TODO: right now, orientation doesn't actually do anything! The methods in SrcUtils should take care of that
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def __init__(self, rxList, freq, loc, orientation='Z', moment=1.):
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self.freq = float(freq)
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self.loc = loc
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self.orientation = orientation
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self.moment = moment
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SrcFDEM.__init__(self, rxList)
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def _getS_m(self,prob):
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eqLocs = prob._eqLocs
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if eqLocs is 'FE':
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gridX = prob.mesh.gridEx
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gridY = prob.mesh.gridEy
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gridZ = prob.mesh.gridEz
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C = prob.mesh.edgeCurl
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elif eqLocs is 'EF':
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gridX = prob.mesh.gridFx
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gridY = prob.mesh.gridFy
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gridZ = prob.mesh.gridFz
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C = prob.mesh.edgeCurl.T
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if prob.mesh._meshType is 'CYL':
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if not prob.mesh.isSymmetric:
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# TODO ?
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raise NotImplementedError('Non-symmetric cyl mesh not implemented yet!')
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a = SrcUtils.MagneticDipoleVectorPotential(self.loc, gridY, 'y')
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else:
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srcfct = SrcUtils.MagneticDipoleVectorPotential
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ax = srcfct(self.loc, gridX, 'x')
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ay = srcfct(self.loc, gridY, 'y')
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az = srcfct(self.loc, gridZ, 'z')
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a = np.concatenate((ax, ay, az))
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S_m = -1j*omega(self.freq)*C*a
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return S_m
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def _getS_e(self,prob):
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return None
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def getSourceDeriv(self, prob, v, adjoint=None):
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return None, None
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class SrcFDEM_MagDipole_Bfield(SrcFDEM):
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#TODO: right now, orientation doesn't actually do anything! The methods in SrcUtils should take care of that
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#TODO: neither does moment
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def __init__(self, rxList, freq, loc, orientation='Z', moment=1.):
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self.freq = float(freq)
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self.orientation = orientation
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SrcFDEM.__init__(self, rxList)
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def _getS_m(self,prob):
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eqLocs = prob._eqLocs
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if eqLocs is 'FE':
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gridX = prob.mesh.gridFx
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gridY = prob.mesh.gridFy
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gridZ = prob.mesh.gridFz
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C = prob.mesh.edgeCurl
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elif eqLocs is 'EF':
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gridX = prob.mesh.gridEx
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gridY = prob.mesh.gridEy
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gridZ = prob.mesh.gridEz
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C = prob.mesh.edgeCurl.T
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srcfct = SrcUtils.MagneticDipoleFields
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if prob.mesh._meshType is 'CYL':
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if not prob.mesh.isSymmetric:
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# TODO ?
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raise NotImplementedError('Non-symmetric cyl mesh not implemented yet!')
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bx = srcfct(self.loc, gridX, 'x')
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bz = srcfct(self.loc, gridZ, 'z')
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b = np.concatenate((bx,bz))
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else:
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bx = srcfct(self.loc, gridX, 'x')
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by = srcfct(self.loc, gridY, 'y')
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bz = srcfct(self.loc, gridZ, 'z')
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b = np.concatenate((bx,by,bz))
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return -1j*omega(self.freq)*b
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def _getS_e(self,prob):
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return None
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def _getS_mDeriv(self, prob, v, adjoint = False):
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return None
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def _getS_eDeriv(self, prob, v, adjoint = False):
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return None
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class SrcFDEM_CircularLoop(SrcFDEM):
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#TODO: right now, orientation doesn't actually do anything! The methods in SrcUtils should take care of that
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def __init__(self, rxList, freq, loc, orientation='Z', radius = 1.):
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self.freq = float(freq)
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self.orientation = orientation
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self.radius = radius
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SrcFDEM.__init__(self, rxList)
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def _getS_mDeriv(self, prob, v, adjoint = False):
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return None
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def _getS_eDeriv(self, prob, v, adjoint = False):
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return None
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def getSource(self, prob):
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eqLocs = prob._eqLocs
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if eqLocs is 'FE':
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gridX = prob.mesh.gridEx
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gridY = prob.mesh.gridEy
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gridZ = prob.mesh.gridEz
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C = prob.mesh.edgeCurl
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elif eqLocs is 'EF':
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gridX = prob.mesh.gridFx
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gridY = prob.mesh.gridFy
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gridZ = prob.mesh.gridFz
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C = prob.mesh.edgeCurl.T
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if prob.mesh._meshType is 'CYL':
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if not prob.mesh.isSymmetric:
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# TODO ?
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raise NotImplementedError('Non-symmetric cyl mesh not implemented yet!')
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a = SrcUtils.MagneticDipoleVectorPotential(src.loc, gridY, 'y', self.radius)
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else:
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srcfct = SrcUtils.MagneticDipoleVectorPotential
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ax = srcfct(self.loc, gridX, 'x', self.radius)
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ay = srcfct(self.loc, gridY, 'y', self.radius)
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az = srcfct(self.loc, gridZ, 'z', self.radius)
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a = np.concatenate((ax, ay, az))
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return -1j*omega(self.freq)*C*a
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####################################################
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# Survey
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####################################################
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class SurveyFDEM(Survey.BaseSurvey):
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"""
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docstring for SurveyFDEM
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"""
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srcPair = SrcFDEM
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def __init__(self, srcList, **kwargs):
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# Sort these by frequency
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self.srcList = srcList
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Survey.BaseSurvey.__init__(self, **kwargs)
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_freqDict = {}
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for src in srcList:
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if src.freq not in _freqDict:
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_freqDict[src.freq] = []
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_freqDict[src.freq] += [src]
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self._freqDict = _freqDict
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self._freqs = sorted([f for f in self._freqDict])
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@property
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def freqs(self):
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"""Frequencies"""
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return self._freqs
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@property
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def nFreq(self):
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"""Number of frequencies"""
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return len(self._freqDict)
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@property
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def nSrcByFreq(self):
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if getattr(self, '_nSrcByFreq', None) is None:
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self._nSrcByFreq = {}
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for freq in self.freqs:
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self._nSrcByFreq[freq] = len(self.getSource(freq))
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return self._nSrcByFreq
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def getSrcByFreq(self, freq):
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"""Returns the sources associated with a specific frequency."""
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assert freq in self._freqDict, "The requested frequency is not in this survey."
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return self._freqDict[freq]
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def projectFields(self, u):
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data = Survey.Data(self)
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for src in self.srcList:
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for rx in src.rxList:
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data[src, rx] = rx.projectFields(src, self.mesh, u)
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return data
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def projectFieldsDeriv(self, u):
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raise Exception('Use Sources to project fields deriv.')
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