RMA object and related elements¶

The RMAType definition.

Bases: Serializable

Range migration reference element of RMA type.

PosRef: XYZType¶

Platform reference position in ECF coordinates used to establish the reference slant plane. Required.

Type:: XYZType

VelRef: XYZType¶

Platform reference velocity vector in ECF coordinates used to establish the reference slant plane. Required.

Type:: XYZType

DopConeAngRef: float¶

Reference Doppler Cone Angle in degrees. 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

Bases: Serializable

Parameters for Imaging Near Closest Approach (INCA) image description.

TimeCAPoly: Poly1DType¶

Polynomial function that yields Time of Closest Approach as function of image column (azimuth) coordinate in meters. Time relative to collection start in seconds. Required.

Type:: Poly1DType

R_CA_SCP: float¶

Range at Closest Approach (R_CA) for the Scene Center Point (SCP) in meters. Required.

Type:: float

FreqZero: float¶

math:(f_0) in Hz used for computing Doppler Centroid values. Typical \(f_0\) set equal to center transmit frequency. Required.

Type:: float
Type:: RF frequency

DRateSFPoly: Poly2DType¶

Polynomial function that yields Doppler Rate scale factor (DRSF) as a function of image location. Yields DRSF as a function of image range coordinate (variable 1) and azimuth coordinate (variable 2). Used to compute Doppler Rate at closest approach. Required.

Type:: Poly2DType

DopCentroidPoly: Poly2DType¶

Only used for Stripmap and Dynamic Stripmap collections.* Optional.

Type:: Poly2DType
Type:: Polynomial function that yields Doppler Centroid value as a function of image location (fdop_DC). The fdop_DC is the Doppler frequency at the peak signal response. The polynomial is a function of image range coordinate (variable 1) and azimuth coordinate (variable 2). *Note

DopCentroidCOA: bool¶

math`fdop_COA = fdop_DC`.

True - if Pixel COA at peak signal for all pixels.
False otherwise.

Note: Only used for Stripmap and Dynamic Stripmap. Optional.

Type:: bool
Type:: Flag indicating that the COA is at the peak signal

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.complex.sicd_elements.RMA.RMAType(RMAlgoType: str = None, RMAT: RMRefType | None = None, RMCR: RMRefType | None = None, INCA: INCAType | None = None, **kwargs)¶

Bases: Serializable

Parameters included when the image is formed using the Range Migration Algorithm.

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

RMAlgoType: str¶

str: Identifies the type of migration algorithm used:

OMEGA_K - Algorithms that employ Stolt interpolation of the Kxt dimension. \(Kx = \sqrt{Kf^2 - Ky^2}\)
CSA - Wave number algorithm that process two-dimensional chirp signals.
RG_DOP - Range-Doppler algorithms that employ RCMC in the compressed range domain.

Takes values in ('OMEGA_K', 'CSA', 'RG_DOP'). Required.

RMAT: RMRefType¶

Parameters for RMA with Along Track (RMAT) motion compensation. Optional.

Type:: RMRefType

RMCR: RMRefType¶

Parameters for RMA with Cross Range (RMCR) motion compensation. Optional.

Type:: RMRefType

INCA: INCAType¶

Parameters for Imaging Near Closest Approach (INCA) image description. Optional.

Type:: INCAType

property ImageType: str | None¶

READ ONLY attribute. Identifies the specific RM image type / metadata type supplied. This is determined by returning the (first) attribute among ‘RMAT’, ‘RMCR’, ‘INCA’ which is populated. None will be returned if none of them are populated.

Type:: str

RMA object and related elements¶

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