test Combinations of rxs and txs for J and Jt

2026-06-28 13:54:53 +08:00 · 2014-04-29 10:52:15 -07:00
parent b750faa3e0
commit 6e21d32230
2 changed files with 79 additions and 3 deletions
@@ -22,9 +22,8 @@ class TDEM_bDerivTests(unittest.TestCase):
                    [Maps.ExpMap, Maps.Vertical1DMap, activeMap])

        rxOffset = 40.
-        rxTypes = 'bx,bz'
-        rxs = [EM.TDEM.RxTDEM(np.array([[rxOffset, 0., 0.]]), np.logspace(-4,-3, 20), rxType) for rxType in rxTypes.split(',')]
-        tx = EM.TDEM.TxTDEM(np.array([0., 0., 0.]), 'VMD_MVP', rxs)
+        rx = EM.TDEM.RxTDEM(np.array([[rxOffset, 0., 0.]]), np.logspace(-4,-3, 20), 'bz')
+        tx = EM.TDEM.TxTDEM(np.array([0., 0., 0.]), 'VMD_MVP', [rx])

        survey = EM.TDEM.SurveyTDEM([tx])

@@ -0,0 +1,77 @@
+import unittest
+from SimPEG import *
+import simpegEM as EM
+
+plotIt = False
+
+def getProb(meshType='CYL',rxTypes='bx,bz',nTx=1):
+    cs = 5.
+    ncx = 20
+    ncy = 6
+    npad = 20
+    hx = [(cs,ncx), (cs,npad,1.3)]
+    hy = [(cs,npad,-1.3), (cs,ncy), (cs,npad,1.3)]
+    mesh = Mesh.CylMesh([hx,1,hy], '00C')
+
+    active = mesh.vectorCCz<0.
+    activeMap = Maps.ActiveCells(mesh, active, np.log(1e-8), nC=mesh.nCz)
+    mapping = Maps.ComboMap(mesh, [Maps.ExpMap, Maps.Vertical1DMap, activeMap])
+
+    rxOffset = 40.
+
+    txs = []
+    for ii in range(nTx):
+        rxs = [EM.TDEM.RxTDEM(np.array([[rxOffset, 0., 0.]]), np.logspace(-4,-3, 20 + ii), rxType) for rxType in rxTypes.split(',')]
+        txs += [EM.TDEM.TxTDEM(np.array([0., 0., 0.]), 'VMD_MVP', rxs)]
+
+    survey = EM.TDEM.SurveyTDEM(txs)
+
+    prb = EM.TDEM.ProblemTDEM_b(mesh, mapping=mapping)
+    # prb.timeSteps = [1e-5]
+    prb.timeSteps = [(1e-05, 10), (5e-05, 10), (2.5e-4, 10)]
+    # prb.timeSteps = [(1e-05, 100)]
+
+    sigma = np.ones(mesh.nCz)*1e-8
+    sigma[mesh.vectorCCz<0] = 1e-1
+    sigma = np.log(sigma[active])
+
+    prb.pair(survey)
+    return prb, mesh, sigma
+
+def testJvec(prb, mesh, sigma):
+    prb.timeSteps = [(1e-05, 10), (0.0001, 10), (0.001, 10)]
+    # d_sig = 0.8*sigma #np.random.rand(mesh.nCz)
+    d_sig = 10*np.random.rand(prb.mapping.nP)
+    derChk = lambda m: [prb.survey.dpred(m), lambda mx: prb.Jvec(sigma, mx)]
+    return Tests.checkDerivative(derChk, sigma, plotIt=False, dx=d_sig, num=2, eps=1e-20)
+
+def testAdjoint(prb, mesh, sigma):
+    m = np.random.rand(prb.mapping.nP)
+    d = np.random.rand(prb.survey.nD)
+
+    V1 = d.dot(prb.Jvec(sigma, m))
+    V2 = m.dot(prb.Jtvec(sigma, d))
+    print 'AdjointTest', V1, V2
+    return np.abs(V1-V2)/np.abs(V1), 1e-6
+
+class TDEM_bDerivTests(unittest.TestCase):
+
+    def test_Jvec_bx(self): self.assertTrue(testJvec(*getProb(rxTypes='bx')))
+    def test_Adjoint_bx(self): self.assertLess(*testAdjoint(*getProb(rxTypes='bx')))
+
+    def test_Jvec_bxbz(self): self.assertTrue(testJvec(*getProb(rxTypes='bx,bz')))
+    def test_Adjoint_bxbz(self): self.assertLess(*testAdjoint(*getProb(rxTypes='bx,bz')))
+
+    def test_Jvec_bxbz_2tx(self): self.assertTrue(testJvec(*getProb(rxTypes='bx,bz',nTx=2)))
+    def test_Adjoint_bxbz_2tx(self): self.assertLess(*testAdjoint(*getProb(rxTypes='bx,bz',nTx=2)))
+
+    def test_Jvec_bxbzbz(self): self.assertTrue(testJvec(*getProb(rxTypes='bx,bz,bz')))
+    def test_Adjoint_bxbzbz(self): self.assertLess(*testAdjoint(*getProb(rxTypes='bx,bz,bz')))
+
+    # def test_Jvec_ey(self): self.assertTrue(testJvec(*getProb(rxTypes='ey')))
+    # def test_Adjoint_ey(self): self.assertLess(*testAdjoint(*getProb(rxTypes='ey')))
+
+
+
+if __name__ == '__main__':
+    unittest.main()