Multi-Sensor Comparison

Compare vegetation indices across different satellite sensors.

Overview

Different sensors have different characteristics:

• Spatial resolution: Detail level

• Temporal resolution: Revisit frequency

• Spectral bands: Available wavelengths

• Data availability: Historical coverage

Quick Comparison

Sensor	Resolution	Revisit	Start Date	Free
Sentinel-2	10m	5 days	2015	Yes
Sentinel-1	10m	6-12 days	2014	Yes
Landsat 8/9	30m	16 days	2013	Yes
MODIS	500m	Daily	2000	Yes

Example: Comparing S2 and Landsat

import ee
from ndvi2gif import NdviSeasonality

ee.Initialize()

roi = ee.Geometry.Point([-3.7, 40.4]).buffer(5000)

# Sentinel-2
s2_ndvi = NdviSeasonality(
    roi=roi,
    sat='S2',
    periods=12,
    start_year=2023,
    end_year=2024,
    index='ndvi',
    key='median'
)

# Landsat 8
l8_ndvi = NdviSeasonality(
    roi=roi,
    sat='L8',
    periods=12,
    start_year=2023,
    end_year=2024,
    index='ndvi',
    key='median'
)

# Get composites
s2_composite = s2_ndvi.get_year_composite(year=2023)
l8_composite = l8_ndvi.get_year_composite(year=2023)

Complete tutorial coming soon…