Digital beamforming analysis and performance for a digital L-band Pseudo-correlation radiometer

Bosch-Lluis, X.; Ramos-Perez, I.; Camps, A.; Rodriguez-Alvarez, Nereida; Marchan-Hernandez, J.F.; Valencia, E.; Nieto, Jorge M.; Guerrero, Manel

doi:10.1109/igarss.2009.5417702

Cited by 10 publications

(9 citation statements)

References 8 publications

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“…Then, the first results, analysis and digital beamforming antenna diagrams where presented in [17]. This work is the continuation, verification and extension of these preliminary works.…”

Section: Pau-rad Overviewmentioning

confidence: 74%

Description and Performance of an L-Band Radiometer with Digital Beamforming

Bosch-Lluis¹,

Ramos-Perez²,

Camps³

et al. 2010

Remote Sensing

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This paper presents the description and performance tests of an L-band microwave radiometer with Digital Beamforming (DBF), developed for the Passive Advanced Unit (PAU) for ocean monitoring project. PAU is an instrument that combines, in a single receiver and without time multiplexing, a microwave radiometer at L-band (PAU-RAD) and a GPS-reflectometer (PAU-GNSS-R). This paper focuses on the PAU-RAD beamformer's first results, analyzing the hardware and software required for the developed prototype. Finally, it discusses the first results measured in the Universitat Politè cnica de Catalunya (UPC) anechoic chamber.

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“…Then, the first results, analysis and digital beamforming antenna diagrams where presented in [17]. This work is the continuation, verification and extension of these preliminary works.…”

Section: Pau-rad Overviewmentioning

confidence: 74%

Description and Performance of an L-Band Radiometer with Digital Beamforming

Bosch-Lluis¹,

Ramos-Perez²,

Camps³

et al. 2010

Remote Sensing

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“…These errors cause the slight deformation of the shape of beam, usually resulting in increased sidelobe level as discussed in [45]. These errors with elementary antenna beam pattern also contribute to the beam pointing error.…”

Section: Instrument Effectsmentioning

confidence: 96%

“…Actual beamforming circuitry is not ideal, so it suffers from quantization errors in gain and phase shifter. In (13), W e m represents the impact of random residual errors in beamforming: [45] …”

Section: Instrument Effectsmentioning

confidence: 99%

A Generic Level 1 Simulator for Spaceborne GNSS-R Missions and Application to GEROS-ISS Ocean Reflectometry

Park

Camps

Pascual

et al. 2017

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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“…There are several versions of the PAU instrument: PAU-RA a real aperture instrument with Digital Beam Forming (DBF) and polarization synthesis capabilities [6], PAU-SA a synthetic aperture version of it [7], griPAU a real aperture instrument with mechanical scan and just one receiver frontend [8]. The EM of the PAU in MicroSat-1 was presented in [9], including details of the system block diagram and the principles of operation.…”

Section: Introductionmentioning

confidence: 99%

PAU instrument aboard INTA MicroSat-1: Flight model tests

Alonso

Camps

Pascual

et al. 2012

2012 IEEE International Geoscience and Remote Sensing Symposium

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This work presents the flight model of a PAU version to be flown in INTA's (Instituto Nacional de Técnicas Aeroespaciales, Spanish Aerospace Center) MicroSat-1 and the tests performed. PAU is a hybrid GNSS-Reflectometer / Microwave Radiometer developed to assess the impact of the sea state on the L-band brightness temperatures and on the GNSS-R observables (the Delay Doppler Maps or DDMs). The DDMs can be used in the future to perform the sea state correction in the L-band radiometric measurements, and therefore, improve the quality of the sea surface salinity retrievals. This work also describes a sensitivity test, a Doppler test, and a preliminary field experiment to evaluate the performance.

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Digital beamforming analysis and performance for a digital L-band Pseudo-correlation radiometer

Cited by 10 publications

References 8 publications

Description and Performance of an L-Band Radiometer with Digital Beamforming

Description and Performance of an L-Band Radiometer with Digital Beamforming

A Generic Level 1 Simulator for Spaceborne GNSS-R Missions and Application to GEROS-ISS Ocean Reflectometry

PAU instrument aboard INTA MicroSat-1: Flight model tests

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