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Synthetic Aperture Radar

Antenna footprint and resolution, range and cross-range ambiguities, SAR image distortions, SAR image SNR, noise equivalent reflectivity, rain clutter

Model antenna, environment, weather, platform and signal processing gains and losses for synthetic aperture radars. Estimate SAR link budget with the radar range equation. Evaluate scene geometry and hardware constraints on pulse repetition frequency, swath length, area coverage rate, and antenna aperture. Compare ideal and effective resolution of synthetic antenna. Model rain reflectivity for linearly and circularly polarized systems. Model ground reflectivity as a function of surface roughness, operating frequency, polarization and grazing angle.


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aperture2swathSwath extent for radar on ground plane (Since R2021a)
sarbeamcompratioSAR beam compression ratio (Since R2021a)
sarbeamwidthSynthetic aperture azimuth beamwidth (Since R2021a)
sardispgrazangDisplay grazing angle for SAR data collection (Since R2021a)
sarintangCoherent integration angle for SAR (Since R2021a)
sarlenSynthetic aperture length (Since R2021a)
sarmaxswathUpper bound on swath length for SAR (Since R2021a)
sarmaxcovrateUpper bound on area coverage rate for SAR (Since R2021a)
sarminapertureLower bound on antenna area for SAR (Since R2021a)
sarrangeMaximum unambiguous slant range of SAR (Since R2021a)
sarprfboundsUpper and lower bound on PRF for SAR (Since R2021a)
sarsquintangSquint angle for SAR data collection (Since R2021a)
grnd2slantrangeConvert ground range projection to slant range (Since R2021a)
slant2grndrangeConvert slant range to ground range projection (Since R2021a)
grnd2slantrngresConvert ground range resolution to slant range resolution (Since R2021b)
slant2grndrngresConvert slant range resolution to ground range resolution (Since R2021b)
clutterVolumeRCSRadar cross-section of volume clutter (Since R2021a)
rainreflectivityVolume reflectivity of rain (Since R2021a)
rainscrSignal-to-clutter ratio due to rain (Since R2021a)
radareqsarsnrSignal-to-noise ratio of SAR image (Since R2021a)
radareqsarpowMinimum peak transmit power using SAR equation (Since R2021a)
radareqsarrngMaximum detectable range using SAR equation (Since R2021a)
sarnoisereflNoise equivalent reflectivity of SAR (Since R2021a)
sarSurfaceRCSRadar cross-section of target for SAR (Since R2021a)
matchinggainGain due to matched filtering (Since R2021a)
sarazgainSAR azimuth processing gain (Since R2021a)
sarchirprateAzimuth chirp rate of received signal for SAR (Since R2021a)
sarpointdopbwDoppler bandwidth due to cross-range platform motion (Since R2021a)
sarscenedopbwDoppler bandwidth of full scene after azimuth dechirping (Since R2021a)
sarinttimeSynthetic aperture integration time (Since R2021a)
sarprfSynthetic aperture radar PRF (Since R2021a)
sarazresAzimuth or cross-range resolution for SAR (Since R2021a)
rainelresElevation resolution of rain limited by radar resolution (Since R2021a)