Mark4Payload

class baseband.mark4.Mark4Payload(words, header=None, nchan=1, bps=2, fanout=1)

Bases: baseband.vlbi_base.payload.VLBIPayloadBase

Container for decoding and encoding Mark 4 payloads.

Parameters:

words : ndarray

Array containg LSB unsigned words (with the right size) that encode the payload.

header : Mark4Header, optional

If given, used to infer the number of channels, bps, and fanout.

nchan : int, optional

Number of channels, used if header is not given. Default: 1.

bps : int, optional

Number of bits per sample, used if header is not given. Default: 2.

fanout : int, optional

Number of tracks every bit stream is spread over, used if header is not given. Default: 1.

Notes

The total number of tracks is nchan * bps * fanout.

Attributes Summary

data	Full decoded payload.
dtype	Numeric type of the decoded data array.
nbytes	Size of the payload in bytes.
ndim	Number of dimensions of the decoded data array.
shape	Shape of the decoded data array.
size	Total number of component samples in the decoded data array.

Methods Summary

fromdata(data, header)	Encode data as payload, using header information.
fromfile(fh, header)	Read payload from filehandle and decode it into data.
tofile(fh)	Write payload to filehandle.

Attributes Documentation

data

Full decoded payload.

dtype

Numeric type of the decoded data array.

nbytes

Size of the payload in bytes.

ndim

Number of dimensions of the decoded data array.

shape

Shape of the decoded data array.

size

Total number of component samples in the decoded data array.

Methods Documentation

classmethod fromdata(data, header)

Encode data as payload, using header information.

classmethod fromfile(fh, header)

Read payload from filehandle and decode it into data.

The payload_nbytes, number of channels, bits per sample, and fanout ratio are all taken from the header.

tofile(fh)

Write payload to filehandle.