AuxiliaryInstrument version 0

xml record

Calibration parameter record. There must be one record per swath (16 nominal swaths) per polarisation (4 polarisation combinations for SM, IW or EW, 2 for WV) for a minimum total of 58. There are 128 possible swath number values supported by the downlink, so the maximum number of combinations of swath number and polarisation that can be defined is 512. id field name definition 0 swath xml string Canonical name of the swath for this swathNumber. 1 radarParams xml record Radar parameters record. id field name definition 0 azimuthSteeringRate ascii double TOPSAR azimuth steering rate. This field is only relevant for IW and EW swaths and is set to 0.0 for SM and WV swaths. 2 pulseParams xml record Replica pulse parameters. This DSR contains the characteristics for the nominal imaging replica pulse within this swath. id field name definition 0 amplitudeCoefficients ascii array[dim_0] Pulse amplitude coefficients of the nominal imaging chirp replica. dim_0: int(str(@count)) attribute: count ascii string ascii float 1 phaseCoefficients ascii array[dim_0] Pulse phase coefficients of the nominal imaging chirp replica. dim_0: int(str(@count)) attribute: count ascii string ascii float 2 nominalTxPulseLength ascii double Nominal transmit pulse length [s]. This parameter is used by the pre-processor and the DCE and SLC processors if it is smaller than the Tx Pulse Length (TXPL) extracted from the ISP headers. The nominal transmit pulse length can be set such that the chirp processed bandwidth is small enough to filter out the spurious signals at ±37.5 MHz. 3 rxVariationCorrectionParamsList xml record attribute: count xml string id field name definition 0 rxVariationCorrectionParams xml array[dim_0] dim_0: determined automatically from xml file xml record id field name definition 0 rxPolarisation xml string Polarisation to which this set of receive correction parameters applies. "H" or "V". 1 gainTrendCoefficients ascii array[dim_0] Gain trend correction coefficients. dim_0: int(str(@count)) attribute: count ascii string ascii float 2 gainOvershootCoefficients ascii array[dim_0] Gain overshoot correction coefficients. dim_0: int(str(@count)) attribute: count ascii string ascii float

xml record

Internal calibration instrument parameters. This record contains swath/polarisation channel dependent parameters related to the instrument. There must be one record per swath (16 nominal swaths) per polarisation (4 polarisation combinations for SM, IW or EW, 2 for WV) for a minimum total of 58. There are 128 possible swath number values supported by the downlink, so the maximum number of combinations of swath number and polarisation that can be defined is 512. id field name definition 0 swath xml string Canonical name of the swath. 1 polarisation xml string Polarisation. Used along with the swathNumber to index the applicable internalCalibrationParams record. 2 timeDelay ascii double Internal time delay [s] to be applied to the reference chirp used for range processing. The IPF only uses this parameter when the time delay cannot be derived from the extracted PG replicas due to invalid (poor quality) reconstructed PG replicas. Nominally, the time delay is estimated as the average internal time delay from the all of the extracted PG replicas and it compensates for the dual polarisation mis-registration. unit: "s" 3 nominalGain xml record Complex gain to be applied to the range match filter when the nominal chirp is used. It is used to compensate for the amplitude and phase differences between the two channels in dual polarisation data. id field name definition 0 re ascii double 1 im ascii double 4 extractedGain xml record Complex gain to be applied to the range match filter when the extracted replica is used. It is used to compensate for the amplitude difference between the two channels in dual polarisation data. Phase difference compensation is not done when the extracted replica is used since the phase difference is already embedded in the extracted replicas. id field name definition 0 re ascii double 1 im ascii double 5 pgProductModel xml record Modeled PG product. The model is relative to the ascending node of the current orbit. id field name definition 0 pgModelInterval ascii double Interval between adjacent PG Product values in the list. unit: "s" 1 values ascii array[dim_0] Array of modeled complex PG model values. The pattern contains attribute "count" complex floating point values separated by spaces. The first value in the array corresponds to the time at the ascending node of the current orbit. dim_0: int(str(@count)) attribute: count ascii string ascii complex ascii record id field name definition 0 real ascii float 1 imaginary ascii float 6 pgReference xml record Reference absolute PG value that will be defined by offline analysis of the acquired data. PG values used by the IPF will be normalised by this PG reference value. id field name definition 0 re ascii double 1 im ascii double 7 swstBias ascii double SWST bias. unit: "s" 8 noise ascii double Nominal noise value if noise used in processing if no noise value can be calculated from the downlink. 9 replicaPccParamsList xml record List of PCC decoding control parameters for the extracted replicas at nominal imaging bandwidth. attribute: count xml string id field name definition 0 pccParams xml array[dim_0] dim_0: determined automatically from xml file xml record PCC decoding parameters for controlling the order and way in which calibration pulses are decoded during processing. There are a minimum of 5 entries in the list, one for each nominal calibration pulse, and a maximum of 6 entries in the list for the transmit H polarisation which includes an additional isolation pulse. id field name definition 0 signal xml string Signal type. 1 order ascii array[dim_0] PCC pulse selection order. This is a list of integers separated by spaces that defines the order in which the pulses are combined using the method below. dim_0: int(str(@count)) attribute: count ascii string ascii int32 2 method xml string Method to use to combine the calibration pulses selected by the order above. The PCC2 method subtracts the pulses in order and averages over the number of pulses. The Average method adds the pulses in order and averages over the number of pulses. The Isolation Subtraction method finds the PCC parameters record for the corresponding isolation pulse and subtracts the selected isolation pulse from the selected nominal pulse. 10 pgPccParamsList xml record List of PCC decoding control parameters for the PG replicas at 100 MHz bandwidth attribute: count xml string id field name definition 0 pccParams xml array[dim_0] dim_0: determined automatically from xml file xml record PCC decoding parameters for controlling the order and way in which calibration pulses are decoded during processing. There are a minimum of 5 entries in the list, one for each nominal calibration pulse, and a maximum of 6 entries in the list for the transmit H polarisation which includes an additional isolation pulse. id field name definition 0 signal xml string Signal type. 1 order ascii array[dim_0] PCC pulse selection order. This is a list of integers separated by spaces that defines the order in which the pulses are combined using the method below. dim_0: int(str(@count)) attribute: count ascii string ascii int32 2 method xml string Method to use to combine the calibration pulses selected by the order above. The PCC2 method subtracts the pulses in order and averages over the number of pulses. The Average method adds the pulses in order and averages over the number of pulses. The Isolation Subtraction method finds the PCC parameters record for the corresponding isolation pulse and subtracts the selected isolation pulse from the selected nominal pulse.

xml record

Each timeline element describes the expected packet transmission sequence for one of the operational modes of the satellite. The SPPDU [A-12] allows for 48 entries numbered from 0-47. At minimum, this list must include 10 entries: an entry for each instrument measurement mode (S1, S2, S3, S4, S5-N, S5-S, S6, IW, EW and WV). id field name definition 0 eccNumber ascii int64 Event Control Code (ECC) number. This field uniquely identifies the ECC program number for this instrument mode and is used by the IPF for timeline selection. 1 mode xml string Instrument mode. This field identifies the instrument mode to which this timeline entry applies. 2 sequenceList xml record Sequence list. This element is a list of activity sequences that together form the expected transmission sequence from the SAR instrument for the data take. The number of sequences is arbitrary but there are 5 slots nominally allocated for 1- an initial noise measurement; 2- an initial calibration sequence; 3- image acquisition; 4- final calibration sequence; and, 5- final noise measurement. attribute: count xml string id field name definition 0 sequence xml array[dim_0] dim_0: determined automatically from xml file xml record Calibration parameter record. There must be one record per swath (16 nominal swaths) per polarisation (4 polarisation combinations for SM, IW or EW, 2 for WV) for a minimum total of 58. There are 128 possible swath number values supported by the downlink, so the maximum number of combinations of swath number and polarisation that can be defined is 512. id field name definition 0 name xml string The name of the activity within the data acquisition to which this sequence belongs. This field is not used by the IPF for processing. It is for informative purposes only and so the range of the field is unbounded. 1 repeat ascii uint8 Sequence repeat flag. For the imaging sequence, this field shall be set to “true” to indentify the ispList that represents the imaging operation. This field shall be set to “false” for all other sequences. mapping: "false" -> 0 mapping: "true" -> 1 2 ispList xml record ISP list. This element contains contains a list of the expected packets within this sequence in the order they should be received. The number of ISP entries is arbitrary but there are 30 slots defined to capture the worst case EW echo acquisition with PCC2 sequences at the end of each burst. attribute: count xml string id field name definition 0 isp xml array[dim_0] dim_0: determined automatically from xml file xml record The ISP element describes one unique, or a series of unique transmission packets. The packets are identified by the packet signal type and contain the number of PRIs expected for this packet type. id field name definition 0 swath xml string Canonical name of the swath to which this packet belongs. 1 signal xml string Signal type. 2 bandwidth xml string Signal bandwidth type. 3 numPri ascii uint32 The number of packets of this signal type expected in series. 3 swathMapList xml record Swath mapping list. This element is a list of the swaths applicable to this ECC program and provides a mapping between the swath number fields in the source packet headers and the logical instrument swath name to which they apply. attribute: count xml string id field name definition 0 swathMap xml array[dim_0] dim_0: determined automatically from xml file xml record Calibration parameter record. There must be one record per swath (16 nominal swaths) per polarisation (4 polarisation combinations for SM, IW or EW, 2 for WV) for a minimum total of 58. There are 128 possible swath number values supported by the downlink, so the maximum number of combinations of swath number and polarisation that can be defined is 512. id field name definition 0 swathNumber ascii int64 The swath number from the source packet secondary header to map to a particular logical swath within the instrument mode. 1 swath xml string Canonical name of the swath to which this packet belongs.

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