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Collection SAR-ASA_IMS_1P_Italy
This collection is a bulk processed sub-set of the SAR-ASA_IMS_1P - Level 1 Single Look Complex full archive.
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- Product Pair offset constraints
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These relative constraints apply to the difference between the value of a
field for a master product and that for a candidate slave
product.
For example, the relative Acquisition date constraint gives the allowed
range (in days) of the difference between the master and slave
acquisition times.
Note this constraint is applied in conjunction with any absolute
Acquisition date range constraint on the slave specified in
the Slave product constraints section.
- Doppler Centroid Frequency (DCF)
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To be noted that the DCF value for the ERS-2 mission is available and stored only for a limited number of products.
The DCF value was unstable from year 2000 to 2011 (end of mission) due to the loss of the ERS-2 gyroscopes -> https://earth.esa.int/eogateway/instruments/sar-ers/cal-val.
The first years of the ERS mission (up to 2000) have "0" constant DCF values as the mission orbits were considered stable.
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