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Cross polarisation calibration solution #4
Description
Activity
For example:
def test_solve_gaintable_matrix_both_circular(self): self.core_solve('stokesIQUV', 'circular', phase_error=0.1, amplitude_error=0.01, leakage=0.01, residual_tol=1e-3, crosspol=True, phase_only=False, f=[100.0, 10.0, -20.0, 50.0], niter=1000)yields:
Ran 1 test in 130.815s FAILED (failures=1) Failure Traceback (most recent call last): File "/Users/timcornwell/anaconda/envs/arlenv/lib/python3.6/unittest/case.py", line 59, in testPartExecutor yield File "/Users/timcornwell/anaconda/envs/arlenv/lib/python3.6/unittest/case.py", line 601, in run testMethod() File "/Users/timcornwell/Code/algorithm-reference-library/tests/test_calibration_solvers.py", line 120, in test_solve_gaintable_matrix_both_circular niter=1000) File "/Users/timcornwell/Code/algorithm-reference-library/tests/test_calibration_solvers.py", line 89, in core_solve assert residual < residual_tol, "%s %s Max residual = %s" % (spf, dpf, residual) AssertionError: stokesIQUV circular Max residual = 0.0788709005565)- added a commit that references this issue
on Jul 19, 2018 - added a commit that references this issue
on Jul 8, 2019
The cross polarisation solution does not converge (judged by residual error), Currently this does work.
Setting the cross pol terms to nonzero leads to non-convergence