Skip to content

Pair#

Description#

This class describes a pair of ASFProducts. This is useful for, but not limited to, describing pairs of reference and secondary scenes for SAR interferometry. The class provides metadata describing the pair's temporal and perpendicular baselines. For Sentinel-1, an optional method is available that estimates temporal coherence.

Pair is a supportive class for the soon-to-be-released Stack and SBAS classes, which will simplify and automate the creation of fully connected, multi-annual, seasonal SBAS stacks.

Attributes#

  • ref_date datetime.date: The acquisition date of the reference scene
  • sec_date datetime.date: The acquisition date of the secondary scene
  • perpendicular int: The pair's perpendicular baseline
  • temporal datetime.timedelta: the pair's temporal baseline

Methods#

estimate_s1_mean_coherence()#

Estimates mean coherence for a Pair of Sentinel-1 scenes or bursts using the 11367x4367 overview of the 2019-2020 VV COH data from the Global Seasonal Sentinel-1 Interferometric Coherence and Backscatter Dataset: https://asf.alaska.edu/datasets/daac/global-seasonal-sentinel-1-interferometric-coherence-and-backscatter-dataset/

args: None

returns:

  • float describing the pair's estimated temporal coherence.