NASA's L-Band Digital Beamforming Synthetic Aperture Radar

Rincon, Rafael; Vega, Manuel A.; Buenfil, Manuel; Geist, Alessandro; Hilliard, L.; Racette, P.

doi:10.1109/tgrs.2011.2157971

Cited by 46 publications

(25 citation statements)

References 10 publications

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“…DBF has not yet been realized on the spaceborne platform, but tested on the airborne platform. The digital beamforming SAR (DBSAR) listed in Table 2 is a state-of-the-art L-band HH/VV dual polarization SAR employing the DBF technique with multi-function capability of scatterometer and altimeter [204]. Based on DBSAR, a P-band DBF SAR with cross-tack interferometric capability is being planned [205,206].…”

Section: Digital Beam Formingmentioning

confidence: 99%

Recent Trend and Advance of Synthetic Aperture Radar with Selected Topics

2013

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The present article is an introductory paper in this special issue on synthetic aperture radar (SAR). A short review is presented on the recent trend and development of SAR and related techniques with selected topics, including the fields of applications, specifications of airborne and spaceborne SARs, and information contents in and interpretations of amplitude data, interferometric SAR (InSAR) data, and polarimetric SAR (PolSAR) data. The review is by no means extensive, and as such only brief summaries of of each selected topics and key references are provided. For further details, the readers are recommended to read the literature given in the references theirin.

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Section: Digital Beam Formingmentioning

confidence: 99%

Recent Trend and Advance of Synthetic Aperture Radar with Selected Topics

2013

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“…EcoSAR's architecture builds upon the L-band Digital Beamforming SAR (DBSAR) and the second generation DBSAR (DBSAR-2) designs [3][5] to perform beam steering on transmit and digital beamforming on receive. The instrument employs a 32-channel reconfigurable architecture to implement full polarimetry and single pass interferometry.…”

Section: Instrument Architecturementioning

confidence: 99%

“…10 and 11, respectively. The images were acquired over Andros Island, Bahamas at an altitude of 3 km using the wide beam illumination technique [3].…”

Section: Radar Digital Unit (Rdu)mentioning

confidence: 99%

“…The instrument is designed to make polarimetric and "single pass" interferometric measurements of ecosystem structure and biomass [1][2] on board a P3 aircraft (see Figure 1). The instrument employs an advanced wideband multichannel radar architecture that allows considerable measurement flexibility and enables imaging techniques beyond the capabilities of conventional SAR systems [3].…”

Section: Introductionmentioning

confidence: 99%

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ECOSAR: P-band digital beamforming polarimetric and single pass interferometric SAR

Rincon

Fatoyinbo

Osmanoǧlu

et al. 2015

2015 IEEE Radar Conference (RadarCon)

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Abstract-EcoSAR is a state-of-the-art beamforming synthetic aperture radar (SAR) recently developed at the NASA/ Goddard Space Flight Center (GSFC) for the measurement of ecosystem structure and biomass. The airborne instrument operates at a center frequency of 435 MHz (P-band), and uses a multi-channel reconfigurable architecture to implement fully polarimetric and "single pass" interferometric measurements. The instrument architecture allows for the real-time configuration radar parameters, including center frequency, resolution, incidence angle, and number of beams, among others. The system is also designed to operate in standard or ping pong interferometric modes, and in full, orthogonal, or hybrid polarimteric modes. The instrument development was recently completed, and its first flight campaign successfully conducted in March 2014 over areas of Bahamas and Costa Rica .

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“…This effort is funded by the NASA Earth Science Technology Office's Instrument Incubator Program (IIP-10). EcoSAR builds on the recent successes of NASA's L-band Digital Beamforming SAR (DBSAR) instrument, which demonstrated advanced digital beamforming SAR techniques for surface imaging and biomass applications [3], [4], [5].…”

Section: Introductionmentioning

confidence: 99%

Development of the RF electronics unit for NASA's ecological synthetic aperture radar

Perrine

Rincon

Fatoyinbo

et al. 2013

2013 IEEE International Symposium on Phased Array Systems and Technology

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In its Carbon Cycle research efforts, prioritized by the National Science Foundation Decadal Survey and mandated by the US Congress, NASA is developing an airborne P-band Ecological Synthetic Aperture Radar called EcoSAR. By using polarimetric and interferometric techniques, and a digital beamforming phased-array architecture, EcoSAR will characterize biomass and ecological structure in three dimensions aboard a P-3 aircraft. One of the main components in the EcoSAR instrument development is the 32 channel RF Electronics Unit (REU). The multi-channel solid-state REU design provides amplification, conditioning, blanking, and several calibration schemes to meet EcoSAR's science and engineering requirements. The design, assembly, and testing of the REU is well underway with 16 of 32 channels completed. The remaining channels are nearly finished. The REU, once complete, will be calibrated and integrated with the rest of the system in preparation for EcoSAR's first flight campaign.

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NASA's L-Band Digital Beamforming Synthetic Aperture Radar

Cited by 46 publications

References 10 publications

Recent Trend and Advance of Synthetic Aperture Radar with Selected Topics

Recent Trend and Advance of Synthetic Aperture Radar with Selected Topics

ECOSAR: P-band digital beamforming polarimetric and single pass interferometric SAR

Development of the RF electronics unit for NASA's ecological synthetic aperture radar

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