Power¶

class baseband_tasks.functions.Power(ih, polarization=None)[source] [edit on github]¶

Calculate powers and cross terms for two polarizations.

For polarizations X and Y, 4 terms are produced:

Term	Value	Expanded	Other name
XX	Re(X X*)	Re(X)2 + Im(X)2	AA
YY	Re(Y Y*)	Re(Y)2 + Im(Y)2	BB
XY	Re(X Y*)	Re(X)Re(Y) + Im(X)Im(Y)	CR
YX	Im(X Y*)	Im(X)Re(Y) - Re(X)Im(Y)	CI

Parameters

ihtask or baseband stream reader: Input data stream.
polarizationarray or (nested) list of char, optional: Output polarization labels. Should broadcast to the output sample shape, i.e., the labels are in the correct axis. For instance, ['LL', 'RR', 'LR', 'RL']. By default, inferred from the underlying stream, using the scheme described above.

Raises

AttributeError: If no polarization information is given.
ValueError: If the underlying stream is not complex, the number of polarizations not equal to two, or the polarization labels not unique.

Methods Summary

Calculate the polarization powers and cross terms for one frame.

Methods Documentation

task(data)[source] [edit on github]¶: Calculate the polarization powers and cross terms for one frame.