The CPHD 0.3 Antenna object

The Antenna definition for CPHD 0.3.

class sarpy.io.phase_history.cphd0_3_elements.Antenna.HPBWType(DCX=None, DCY=None, **kwargs)

Bases: Serializable

Half power beamwidth parameters.

DCX: float

Half power beamwidth in the X-axis direction cosine (DCX). Required.

Type:

float

DCY: float

Half power beamwidth in the Y -axis direction cosine (DCY). Required.

Type:

float

copy()

Create a deep copy.

classmethod from_dict(input_dict)

For json deserialization, from dict instance.

Parameters:

input_dict (dict) – Appropriate parameters dict instance for deserialization

Return type:

Corresponding class instance

classmethod from_node(node, xml_ns, ns_key=None, kwargs=None)

For XML deserialization.

Parameters:

  • node (ElementTree.Element) – dom element for serialized class instance

  • xml_ns (None|dict) – The xml namespace dictionary.

  • ns_key (None|str) – The xml namespace key. If xml_ns is None, then this is ignored. If None and xml_ns is not None, then the string default will be used. This will be recursively passed down, unless overridden by an entry of the cls._child_xml_ns_key dictionary.

  • kwargs (None|dict) – None or dictionary of previously serialized attributes. For use in inheritance call, when certain attributes require specific deserialization.

Return type:

Corresponding class instance

is_valid(recursive=False, stack=False)

Returns the validity of this object according to the schema. This is done by inspecting that all required fields (i.e. entries of _required) are not None.

Parameters:

  • recursive (bool) – True if we recursively check that child are also valid. This may result in verbose (i.e. noisy) logging.

  • stack (bool) – Print a recursive error message?

Returns:

condition for validity of this element

Return type:

bool

log_validity_error(msg)

Log a validity check error message.

Parameters:

msg (str) –

log_validity_info(msg)

Log a validation info message.

Parameters:

msg (str) –

log_validity_warning(msg)

Log a validity check warning message.

Parameters:

msg (str) –

set_numeric_format(attribute, format_string)

Sets the numeric format string for the given attribute.

Parameters:

  • attribute (str) – attribute for which the format applies - must be in _fields.

  • format_string (str) – format string to be applied

Return type:

None

to_dict(check_validity=False, strict=False, exclude=())

For json serialization.

Parameters:

  • check_validity (bool) – Check whether the element is valid before serializing, by calling is_valid().

  • strict (bool) – Only used if check_validity = True. In that case, if True then raise an Exception (of appropriate type) if the structure is not valid, if False then log a hopefully helpful message.

  • exclude (tuple) – Attribute names to exclude from this generic serialization. This allows for child classes to provide specific serialization for special properties, after using this super method.

Returns:

dict representation of class instance appropriate for direct json serialization.

Return type:

OrderedDict

to_node(doc, tag, ns_key=None, parent=None, check_validity=False, strict=False, exclude=())

For XML serialization, to a dom element.

Parameters:

  • doc (ElementTree.ElementTree) – The xml Document

  • tag (None|str) – The tag name. Defaults to the value of self._tag and then the class name if unspecified.

  • ns_key (None|str) – The namespace prefix. This will be recursively passed down, unless overridden by an entry in the _child_xml_ns_key dictionary.

  • parent (None|ElementTree.Element) – The parent element. Defaults to the document root element if unspecified.

  • check_validity (bool) – Check whether the element is valid before serializing, by calling is_valid().

  • strict (bool) – Only used if check_validity = True. In that case, if True then raise an Exception (of appropriate type) if the structure is not valid, if False then log a hopefully helpful message.

  • exclude (tuple) – Attribute names to exclude from this generic serialization. This allows for child classes to provide specific serialization for special properties, after using this super method.

Returns:

The constructed dom element, already assigned to the parent element.

Return type:

ElementTree.Element

to_xml_bytes(urn=None, tag=None, check_validity=False, strict=False)

Gets a bytes array, which corresponds to the xml string in utf-8 encoding, identified as using the namespace given by urn (if given).

Parameters:

  • urn (None|str|dict) – The xml namespace string or dictionary describing the xml namespace.

  • tag (None|str) – The root node tag to use. If not given, then the class name will be used.

  • check_validity (bool) – Check whether the element is valid before serializing, by calling is_valid().

  • strict (bool) – Only used if check_validity = True. In that case, if True then raise an Exception (of appropriate type) if the structure is not valid, if False then log a hopefully helpful message.

Returns:

bytes array from ElementTree.tostring() call.

Return type:

bytes

to_xml_string(urn=None, tag=None, check_validity=False, strict=False)

Gets a xml string with utf-8 encoding, identified as using the namespace given by urn (if given).

Parameters:

  • urn (None|str|dict) – The xml namespace or dictionary describing the xml namespace.

  • tag (None|str) – The root node tag to use. If not given, then the class name will be used.

  • check_validity (bool) – Check whether the element is valid before serializing, by calling is_valid().

  • strict (bool) – Only used if check_validity = True. In that case, if True then raise an Exception (of appropriate type) if the structure is not valid, if False then log a hopefully helpful message.

Returns:

xml string from ElementTree.tostring() call.

Return type:

str

class sarpy.io.phase_history.cphd0_3_elements.Antenna.AntParamType(XAxisPoly=None, YAxisPoly=None, FreqZero=None, EB=None, HPBW=None, Array=None, Elem=None, GainBSPoly=None, EBFreqShift=None, MLFreqDilation=None, **kwargs)

Bases: AntParamType

The antenna parameters container.

HPBW: None | HPBWType

Optional.

Type:

HPBWType

Array: GainPhasePolyType

Array pattern polynomials that define the shape of the main-lobe. Required.

Type:

GainPhasePolyType

EB: EBType

Electrical boresight (EB) steering directions for an electronically steered array. Optional.

Type:

EBType

EBFreqShift: bool

bool: Parameter indicating whether the electronic boresite shifts with frequency for an electronically steered array.

  • False - No shift with frequency.

  • True - Shift with frequency per ideal array theory.

    Optional.

Elem: GainPhasePolyType

Element array pattern polynomials for electronically steered arrays. Optional.

Type:

GainPhasePolyType

FreqZero: float

RF frequency (f0) used to specify the array pattern and electrical boresight (EB) steering direction cosines. Required.

Type:

float

GainBSPoly: Poly1DType

Gain polynomial (in dB) as a function of frequency for boresight (BS) at \(DCX=0, DCY=0\). Frequency ratio \((f-f0)/f0\) is the input variable (variable 1), and the constant coefficient is always 0.0. Optional.

Type:

Poly1DType

MLFreqDilation: bool

bool: Parameter indicating the mainlobe (ML) width changes with frequency.

  • False - No change with frequency.

  • True - Change with frequency per ideal array theory.

    Optional.

XAxisPoly: XYZPolyType

Antenna X-Axis unit vector in ECF coordinates as a function of time (variable 1). Required.

Type:

XYZPolyType

YAxisPoly: XYZPolyType

Antenna Y-Axis unit vector in ECF coordinates as a function of time (variable 1). Required.

Type:

XYZPolyType

copy()

Create a deep copy.

classmethod from_dict(input_dict)

For json deserialization, from dict instance.

Parameters:

input_dict (dict) – Appropriate parameters dict instance for deserialization

Return type:

Corresponding class instance

classmethod from_node(node, xml_ns, ns_key=None, kwargs=None)

For XML deserialization.

Parameters:

  • node (ElementTree.Element) – dom element for serialized class instance

  • xml_ns (None|dict) – The xml namespace dictionary.

  • ns_key (None|str) – The xml namespace key. If xml_ns is None, then this is ignored. If None and xml_ns is not None, then the string default will be used. This will be recursively passed down, unless overridden by an entry of the cls._child_xml_ns_key dictionary.

  • kwargs (None|dict) – None or dictionary of previously serialized attributes. For use in inheritance call, when certain attributes require specific deserialization.

Return type:

Corresponding class instance

is_valid(recursive=False, stack=False)

Returns the validity of this object according to the schema. This is done by inspecting that all required fields (i.e. entries of _required) are not None.

Parameters:

  • recursive (bool) – True if we recursively check that child are also valid. This may result in verbose (i.e. noisy) logging.

  • stack (bool) – Print a recursive error message?

Returns:

condition for validity of this element

Return type:

bool

log_validity_error(msg)

Log a validity check error message.

Parameters:

msg (str) –

log_validity_info(msg)

Log a validation info message.

Parameters:

msg (str) –

log_validity_warning(msg)

Log a validity check warning message.

Parameters:

msg (str) –

set_numeric_format(attribute, format_string)

Sets the numeric format string for the given attribute.

Parameters:

  • attribute (str) – attribute for which the format applies - must be in _fields.

  • format_string (str) – format string to be applied

Return type:

None

to_dict(check_validity=False, strict=False, exclude=())

For json serialization.

Parameters:

  • check_validity (bool) – Check whether the element is valid before serializing, by calling is_valid().

  • strict (bool) – Only used if check_validity = True. In that case, if True then raise an Exception (of appropriate type) if the structure is not valid, if False then log a hopefully helpful message.

  • exclude (tuple) – Attribute names to exclude from this generic serialization. This allows for child classes to provide specific serialization for special properties, after using this super method.

Returns:

dict representation of class instance appropriate for direct json serialization.

Return type:

OrderedDict

to_node(doc, tag, ns_key=None, parent=None, check_validity=False, strict=False, exclude=())

For XML serialization, to a dom element.

Parameters:

  • doc (ElementTree.ElementTree) – The xml Document

  • tag (None|str) – The tag name. Defaults to the value of self._tag and then the class name if unspecified.

  • ns_key (None|str) – The namespace prefix. This will be recursively passed down, unless overridden by an entry in the _child_xml_ns_key dictionary.

  • parent (None|ElementTree.Element) – The parent element. Defaults to the document root element if unspecified.

  • check_validity (bool) – Check whether the element is valid before serializing, by calling is_valid().

  • strict (bool) – Only used if check_validity = True. In that case, if True then raise an Exception (of appropriate type) if the structure is not valid, if False then log a hopefully helpful message.

  • exclude (tuple) – Attribute names to exclude from this generic serialization. This allows for child classes to provide specific serialization for special properties, after using this super method.

Returns:

The constructed dom element, already assigned to the parent element.

Return type:

ElementTree.Element

to_xml_bytes(urn=None, tag=None, check_validity=False, strict=False)

Gets a bytes array, which corresponds to the xml string in utf-8 encoding, identified as using the namespace given by urn (if given).

Parameters:

  • urn (None|str|dict) – The xml namespace string or dictionary describing the xml namespace.

  • tag (None|str) – The root node tag to use. If not given, then the class name will be used.

  • check_validity (bool) – Check whether the element is valid before serializing, by calling is_valid().

  • strict (bool) – Only used if check_validity = True. In that case, if True then raise an Exception (of appropriate type) if the structure is not valid, if False then log a hopefully helpful message.

Returns:

bytes array from ElementTree.tostring() call.

Return type:

bytes

to_xml_string(urn=None, tag=None, check_validity=False, strict=False)

Gets a xml string with utf-8 encoding, identified as using the namespace given by urn (if given).

Parameters:

  • urn (None|str|dict) – The xml namespace or dictionary describing the xml namespace.

  • tag (None|str) – The root node tag to use. If not given, then the class name will be used.

  • check_validity (bool) – Check whether the element is valid before serializing, by calling is_valid().

  • strict (bool) – Only used if check_validity = True. In that case, if True then raise an Exception (of appropriate type) if the structure is not valid, if False then log a hopefully helpful message.

Returns:

xml string from ElementTree.tostring() call.

Return type:

str

class sarpy.io.phase_history.cphd0_3_elements.Antenna.AntennaType(Tx=None, Rcv=None, TwoWay=None, **kwargs)

Bases: Serializable

Antenna parameters that describe antenna orientation, mainlobe steering and gain patterns vs. time.

Tx: None | List[AntParamType]

Transmit antenna pattern parameters. Optional.

Type:

List[AntParamType]

copy()

Create a deep copy.

classmethod from_dict(input_dict)

For json deserialization, from dict instance.

Parameters:

input_dict (dict) – Appropriate parameters dict instance for deserialization

Return type:

Corresponding class instance

classmethod from_node(node, xml_ns, ns_key=None, kwargs=None)

For XML deserialization.

Parameters:

  • node (ElementTree.Element) – dom element for serialized class instance

  • xml_ns (None|dict) – The xml namespace dictionary.

  • ns_key (None|str) – The xml namespace key. If xml_ns is None, then this is ignored. If None and xml_ns is not None, then the string default will be used. This will be recursively passed down, unless overridden by an entry of the cls._child_xml_ns_key dictionary.

  • kwargs (None|dict) – None or dictionary of previously serialized attributes. For use in inheritance call, when certain attributes require specific deserialization.

Return type:

Corresponding class instance

is_valid(recursive=False, stack=False)

Returns the validity of this object according to the schema. This is done by inspecting that all required fields (i.e. entries of _required) are not None.

Parameters:

  • recursive (bool) – True if we recursively check that child are also valid. This may result in verbose (i.e. noisy) logging.

  • stack (bool) – Print a recursive error message?

Returns:

condition for validity of this element

Return type:

bool

log_validity_error(msg)

Log a validity check error message.

Parameters:

msg (str) –

log_validity_info(msg)

Log a validation info message.

Parameters:

msg (str) –

log_validity_warning(msg)

Log a validity check warning message.

Parameters:

msg (str) –

set_numeric_format(attribute, format_string)

Sets the numeric format string for the given attribute.

Parameters:

  • attribute (str) – attribute for which the format applies - must be in _fields.

  • format_string (str) – format string to be applied

Return type:

None

to_dict(check_validity=False, strict=False, exclude=())

For json serialization.

Parameters:

  • check_validity (bool) – Check whether the element is valid before serializing, by calling is_valid().

  • strict (bool) – Only used if check_validity = True. In that case, if True then raise an Exception (of appropriate type) if the structure is not valid, if False then log a hopefully helpful message.

  • exclude (tuple) – Attribute names to exclude from this generic serialization. This allows for child classes to provide specific serialization for special properties, after using this super method.

Returns:

dict representation of class instance appropriate for direct json serialization.

Return type:

OrderedDict

to_node(doc, tag, ns_key=None, parent=None, check_validity=False, strict=False, exclude=())

For XML serialization, to a dom element.

Parameters:

  • doc (ElementTree.ElementTree) – The xml Document

  • tag (None|str) – The tag name. Defaults to the value of self._tag and then the class name if unspecified.

  • ns_key (None|str) – The namespace prefix. This will be recursively passed down, unless overridden by an entry in the _child_xml_ns_key dictionary.

  • parent (None|ElementTree.Element) – The parent element. Defaults to the document root element if unspecified.

  • check_validity (bool) – Check whether the element is valid before serializing, by calling is_valid().

  • strict (bool) – Only used if check_validity = True. In that case, if True then raise an Exception (of appropriate type) if the structure is not valid, if False then log a hopefully helpful message.

  • exclude (tuple) – Attribute names to exclude from this generic serialization. This allows for child classes to provide specific serialization for special properties, after using this super method.

Returns:

The constructed dom element, already assigned to the parent element.

Return type:

ElementTree.Element

to_xml_bytes(urn=None, tag=None, check_validity=False, strict=False)

Gets a bytes array, which corresponds to the xml string in utf-8 encoding, identified as using the namespace given by urn (if given).

Parameters:

  • urn (None|str|dict) – The xml namespace string or dictionary describing the xml namespace.

  • tag (None|str) – The root node tag to use. If not given, then the class name will be used.

  • check_validity (bool) – Check whether the element is valid before serializing, by calling is_valid().

  • strict (bool) – Only used if check_validity = True. In that case, if True then raise an Exception (of appropriate type) if the structure is not valid, if False then log a hopefully helpful message.

Returns:

bytes array from ElementTree.tostring() call.

Return type:

bytes

to_xml_string(urn=None, tag=None, check_validity=False, strict=False)

Gets a xml string with utf-8 encoding, identified as using the namespace given by urn (if given).

Parameters:

  • urn (None|str|dict) – The xml namespace or dictionary describing the xml namespace.

  • tag (None|str) – The root node tag to use. If not given, then the class name will be used.

  • check_validity (bool) – Check whether the element is valid before serializing, by calling is_valid().

  • strict (bool) – Only used if check_validity = True. In that case, if True then raise an Exception (of appropriate type) if the structure is not valid, if False then log a hopefully helpful message.

Returns:

xml string from ElementTree.tostring() call.

Return type:

str

Rcv: None | List[AntParamType]

Receive antenna pattern parameters. Optional.

Type:

List[AntParamType]

TwoWay: None | List[AntParamType]

Two-way antenna pattern parameters. Optional.

Type:

List[AntParamType]

property NumTxAnt

The number of transmit elements.

Type:

int

property NumRcvAnt

The number of receive elements.

Type:

int

property NumTWAnt

The number of two way elements.

Type:

int