mirror of
https://github.com/wassname/simpeg.git
synced 2026-06-28 22:54:10 +08:00
rowanc1
141 lines
3.9 KiB
Python
141 lines
3.9 KiB
Python
from SimPEG import Survey, Utils, np, sp
|
|
|
|
class RxFDEM(Survey.BaseRx):
|
|
|
|
knownRxTypes = {
|
|
'exr':['e', 'Ex', 'real'],
|
|
'eyr':['e', 'Ey', 'real'],
|
|
'ezr':['e', 'Ez', 'real'],
|
|
'exi':['e', 'Ex', 'imag'],
|
|
'eyi':['e', 'Ey', 'imag'],
|
|
'ezi':['e', 'Ez', 'imag'],
|
|
|
|
'bxr':['b', 'Fx', 'real'],
|
|
'byr':['b', 'Fy', 'real'],
|
|
'bzr':['b', 'Fz', 'real'],
|
|
'bxi':['b', 'Fx', 'imag'],
|
|
'byi':['b', 'Fy', 'imag'],
|
|
'bzi':['b', 'Fz', 'imag'],
|
|
}
|
|
|
|
def __init__(self, locs, rxType):
|
|
Survey.BaseRx.__init__(self, locs, rxType)
|
|
|
|
@property
|
|
def projField(self):
|
|
"""Field Type projection (e.g. e b ...)"""
|
|
return self.knownRxTypes[self.rxType][0]
|
|
|
|
@property
|
|
def projGLoc(self):
|
|
"""Grid Location projection (e.g. Ex Fy ...)"""
|
|
return self.knownRxTypes[self.rxType][1]
|
|
|
|
@property
|
|
def projComp(self):
|
|
"""Component projection (real/imag)"""
|
|
return self.knownRxTypes[self.rxType][2]
|
|
|
|
def projectFields(self, tx, mesh, u):
|
|
P = self.getP(mesh)
|
|
u_part_complex = u[tx, self.projField]
|
|
# get the real or imag component
|
|
real_or_imag = self.projComp
|
|
u_part = getattr(u_part_complex, real_or_imag)
|
|
return P*u_part
|
|
|
|
def projectFieldsDeriv(self, tx, mesh, u, v, adjoint=False):
|
|
P = self.getP(mesh)
|
|
|
|
if not adjoint:
|
|
Pv_complex = P * v
|
|
real_or_imag = self.projComp
|
|
Pv = getattr(Pv_complex, real_or_imag)
|
|
elif adjoint:
|
|
Pv_real = P.T * v
|
|
|
|
real_or_imag = self.projComp
|
|
if real_or_imag == 'imag':
|
|
Pv = 1j*Pv_real
|
|
elif real_or_imag == 'real':
|
|
Pv = Pv_real.astype(complex)
|
|
else:
|
|
raise NotImplementedError('must be real or imag')
|
|
|
|
return Pv
|
|
|
|
|
|
class TxFDEM(Survey.BaseTx):
|
|
|
|
freq = None #: Frequency (float)
|
|
|
|
rxPair = RxFDEM
|
|
|
|
knownTxTypes = ['VMD']
|
|
|
|
def __init__(self, loc, txType, freq, rxList):
|
|
self.freq = float(freq)
|
|
Survey.BaseTx.__init__(self, loc, txType, rxList)
|
|
|
|
|
|
|
|
class FieldsFDEM(Survey.Fields):
|
|
"""Fancy Field Storage for a FDEM survey."""
|
|
knownFields = {'b': 'F', 'e': 'E'}
|
|
dtype = complex
|
|
|
|
|
|
class SurveyFDEM(Survey.BaseSurvey):
|
|
"""
|
|
docstring for SurveyFDEM
|
|
"""
|
|
|
|
txPair = TxFDEM
|
|
|
|
def __init__(self, txList, **kwargs):
|
|
# Sort these by frequency
|
|
self.txList = txList
|
|
Survey.BaseSurvey.__init__(self, **kwargs)
|
|
|
|
_freqDict = {}
|
|
for tx in txList:
|
|
if tx.freq not in _freqDict:
|
|
_freqDict[tx.freq] = []
|
|
_freqDict[tx.freq] += [tx]
|
|
|
|
self._freqDict = _freqDict
|
|
self._freqs = sorted([f for f in self._freqDict])
|
|
|
|
@property
|
|
def freqs(self):
|
|
"""Frequencies"""
|
|
return self._freqs
|
|
|
|
@property
|
|
def nFreq(self):
|
|
"""Number of frequencies"""
|
|
return len(self._freqDict)
|
|
|
|
@property
|
|
def nTxByFreq(self):
|
|
if getattr(self, '_nTxByFreq', None) is None:
|
|
self._nTxByFreq = {}
|
|
for freq in self.freqs:
|
|
self._nTxByFreq[freq] = len(self.getTransmitters(freq))
|
|
return self._nTxByFreq
|
|
|
|
def getTransmitters(self, freq):
|
|
"""Returns the transmitters associated with a specific frequency."""
|
|
assert freq in self._freqDict, "The requested frequency is not in this survey."
|
|
return self._freqDict[freq]
|
|
|
|
def projectFields(self, u):
|
|
data = Survey.Data(self)
|
|
for tx in self.txList:
|
|
for rx in tx.rxList:
|
|
data[tx, rx] = rx.projectFields(tx, self.mesh, u)
|
|
return data
|
|
|
|
def projectFieldsDeriv(self, u):
|
|
raise Exception('Use Transmitters to project fields deriv.')
|