WV
type: Concept
broader: SAR-C

SAR-C
type: Concept
in platform: Sentinel-1A
in platform: Sentinel-1C
in platform: Sentinel-1B
in platform: Sentinel-1D
narrower: SM
narrower: WV
narrower: IW
narrower: EW
broader: Sentinel-1D
broader: Sentinel-1B
broader: Sentinel-1C
broader: Sentinel-1A
type: Sensor
source: sar-instrument
alternative label: Synthetic Aperture Radar (C-band)
alternative label: C-SAR
definition: The C-SAR instrument is an active phased array antenna providing fast scanning in elevation (to cover the large range of incidence angle and to support ScanSAR operation) and in azimuth (to allow use of TOPS technique to meet the required image performance). To meet the polarisation requirements, it has dual channel transmit and receive modules and H/V-polarised pairs of slotted waveguides. It has an internal calibration scheme, where transmit signals are routed into the receiver to allow monitoring of amplitude/phase to facilitate high radiometric stability. SENTINEL-1's metallised carbon-fibre-reinforced-plastic radiating waveguides ensure good radiometric stability even though these elements are not covered by the internal calibration scheme. The digital chirp generator and selectable receive filter bandwidths allow efficient use of on-board storage considering the ground range resolution dependence on incidence angle.

SM
type: Concept
broader: SAR-C

IW
type: Concept
broader: SAR-C

EW
type: Concept
broader: SAR-C

in platform

Sentinel-1C
type: Platform
type: Concept
narrower: SAR-C
hosts: SAR-C

Sentinel-1A
type: Platform
type: Concept
narrower: SAR-C
hosts: SAR-C

Instrument
type: ConceptGroup
type: Collection
member: SAR-C

Sentinel-1D
type: Platform
type: Concept
narrower: SAR-C
hosts: SAR-C

Sentinel-1B
type: Platform
type: Concept
narrower: SAR-C
hosts: SAR-C