Var vhIwAscDescMean = rge(vvVhIwDesc).select('VH').mean() Mean VH for combined ascending and descending image collections. Var vvIwAscDescMean = rge(vvVhIwDesc).select('VV').mean() Mean VV for combined ascending and descending image collections. Calculate temporal means for various observations to use for visualization.
Separate ascending and descending orbit images into distinct collections.Įe.Filter.eq('orbitProperties_pass', 'ASCENDING')) Įe.Filter.eq('orbitProperties_pass', 'DESCENDING')) filter(ee.Filter.eq('instrumentMode', 'IW')) Filter to get images collected in interferometric wide swath mode. filter(ee.Filter.listContains('transmitterReceiverPolarisation', 'VH')) filter(ee.Filter.listContains('transmitterReceiverPolarisation', 'VV')) Filter to get images with VV and VH dual polarization. Filter the Sentinel-1 collection by metadata properties. Var sentinel1 = ee.ImageCollection('COPERNICUS/S1_GRD') Observation combinations that are displayed in the map to demonstrate how theseĬode Editor (JavaScript) // Load the Sentinel-1 ImageCollection, filter to Jun-Sep 2020 observations. OrbitProperties_pass properties, then calculates composites for several TransmitterReceiverPolarisation, instrumentMode, and
The following code filters the Sentinel-1 collection by resolution: 'M' (medium) or 'H' (high).orbitProperties_pass: 'ASCENDING' or 'DESCENDING'.instrumentMode: 'IW' (Interferometric Wide Swath), 'EW'.transmitterReceiverPolarisation:, ,, or.To create a homogeneous subset of Sentinel-1 data, it will usually be necessary toįilter the collection using metadata properties. Homogeneous subset before starting processing. Of this heterogeneity, it's usually necessary to filter the data to down to a Resolutions, band combinations during both ascending and descending orbits. Sentinel-1 data is collected with several different instrument configurations, This document describes pre-processing of Sentinel-1 data in Earth Engine. Requires several specialized algorithms to obtain calibrated, orthorectified imagery, Radar (SAR) imagery at a variety of polarizations and resolutions. Sentinel-1 collects C-band synthetic aperture Space mission funded by the European Union and carried out by the European Space Agency