# CBERS-4 Wide Field Imager 2
*sensor . products*

Wide-field multispectral imager flown on CBERS-4.

## Specifications
- **product status**: operational
- **deployment context**: orbital
- **manufacturer**: inpe
- **sensor**: {"instrument_family":"passive-optical","measurement_principle":"passive","spectral_range_nm":{"min":450,"max":890},"spectral_band_count":4,"gsd_m":{"native":64},"swath_km":866,"spec_disclosure":"disclosed"}
- **entity type**: sensor
- **last verified date**: 2026-06-16
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: inpe
- **attributes**: {"kind":"sensor","product_status":"operational","deployment_context":"orbital","manufacturer":"inpe","description":"Wide-field multispectral imager flown on CBERS-4.","sensor":"{\"instrument_family\":\"passive-optical\",\"measurement_principle\":\"passive\",\"spectral_range_nm\":{\"min\":450,\"max\":890},\"spectral_band_count\":4,\"gsd_m\":{\"native\":64},\"swath_km\":866,\"spec_disclosure\":\"disclosed\"}"}
- **relevance**: in-scope

## Editorial
CBERS-4 Wide Field Imager 2 is a passive optical wide-field multispectral camera flown on CBERS-4 for broad land-resource imaging.[^inpe-cbers-34-cameras] It records four blue, green, red, and near-infrared bands spanning 450 to 890 nm at 64 m native ground sampling distance across an 866 km swath.[^inpe-cbers-34-cameras] The camera has no side-looking mirror, a wide field of view of +/-28.63 degrees, and a 50 Mbit/s gross data rate.[^inpe-cbers-34-cameras]

CBERS-4 WFI imagery has 5-day temporal resolution.[^bdc-input-data] The instrument is a four-band blue-to-NIR optical payload with 64 m nadir resolution and rapid revisit capacity.[^mdpi-cbers4-mux-wfi-calibration] Use of WFI on CBERS-4 is demonstrated for vegetation index mapping and optical time-series change detection.[^inpe-cbers-34-cameras][^ceos-cbers4]

## Compositional position
- cbers-4 (missions) --[mission_payloads]--> CBERS-4 Wide Field Imager 2

## Sources
- [inpe-cbers-34-cameras] | INPE CBERS-3 and 4 imaging cameras | https://www.gov.br/inpe/pt-br/programas/cbers/sobre-o-cbers-1/cbers-3-e-4/cameras-imageadoras | tier=agency-doc | accessed=2026-06-16
- [bdc-input-data] | Brazil Data Cube input data specifications | https://brazil-data-cube.github.io/specifications/input-data.html | tier=agency-doc | accessed=2026-06-16
- [mdpi-cbers4-mux-wfi-calibration] | First in-flight radiometric calibration of MUX and WFI on-board CBERS-4 | https://www.mdpi.com/2072-4292/8/5/405 | tier=peer-reviewed | accessed=2026-06-16
- [ceos-cbers4] | CEOS MIM mission summary: CBERS-4 | https://database.eohandbook.com/database/missionsummary.aspx?missionID=393 | tier=community | accessed=2026-06-16

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Source: https://eo-atlas.org/products/sensor/wfi-2-cbers-4
Maintainer: SpectraWorks B.V. (CC-BY 4.0)