SABRINA: A SAR Bistatic Receiver for Interferometric Applications

Sanz-Marcos, J.; López-Dekker, Paco; Mallorquí, J.J.; Aguasca, A.; Prats, Pau

doi:10.1109/lgrs.2007.894144

Cited by 88 publications

(50 citation statements)

References 8 publications

(4 reference statements)

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“…Bistatic applications were investigated in the fields of target detection [6,7] and planetology [8]. As for Earth Observation, oceanographic studies exploiting the GPS signal were carried out, including altimetric applications (measure of the sea level and of the associated oceanographic features) and scatterometric applications (measure of the near surface wind field) [9,10], while interferometric applications were addressed in [11]. In consequence of the recent launch of the new generation of X-band radars (TerraSAR-X, COSMO-SkyMed), experiments involving X-band have been accomplished in order to evaluate the additional information contained in the bistatic reflectivity of targets (e.g., [12]).…”

Section: Open Accessmentioning

confidence: 99%

Use of Satellite Radar Bistatic Measurements for Crop Monitoring: A Simulation Study on Corn Fields

et al. 2013

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This paper presents a theoretical study of microwave remote sensing of vegetated surfaces. The purpose of this study is to find out if satellite bistatic radar systems can provide a performance, in terms of sensitivity to vegetation geophysical parameters, equal to or greater than the performance of monostatic systems. Up to now, no suitable bistatic data collected over land surfaces are available from satellite, so that the electromagnetic model developed at Tor Vergata University has been used to perform simulations of the scattering coefficient of corn, over a wide range of observation angles at L-and C-band. According to the electromagnetic model, the most promising configuration is the one which measures the VV or HH bistatic scattering coefficient on the plane that lies at the azimuth angle orthogonal with respect to the incidence plane. At this scattering angle, the soil contribution is minimized, and the effects of vegetation growth are highlighted.

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Section: Open Accessmentioning

confidence: 99%

Use of Satellite Radar Bistatic Measurements for Crop Monitoring: A Simulation Study on Corn Fields

et al. 2013

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“…A description and discussion of an earlier 2-channel version of the system can be found in [2]. Now, the system has 4 channels.…”

Section: Experimental Set-upmentioning

confidence: 99%

“…The Remote Sensing Lab (RSLab) at the Universitat Politècnica de Catalunya is studying interferometric applications of fixed-receiver BSAR systems [2]. This configuration presents two important advantages in interferometric and Fig.…”

Section: Introductionmentioning

confidence: 99%

Bistatic SAR along track interferometry with multiple fixed receivers

Duque¹,

López-Dekker

Merlano³

et al. 2010

2010 IEEE International Geoscience and Remote Sensing Symposium

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This paper presents an along -track interferometry (ATI) study for a bistatic or multiestatic SAR configuration with fixed ground receivers. This technique can be useful for sea current estimation or for any problem of Ground Motion Target Indicator (GMTI). The proximity of the ground receivers to the scene allows to be very sensitivite to velocities with small baselines. This paper also proposes a multibaseline approach for ATI able to diferenciate among different velocity contributions in the same resolution cell. At the end of this paper, some results over real acquired bistatic data will be presented and discussed. The data have been acquired using the C-band SAR Bistatic Receiver for INterferometric Applications (SABRINA) and ESA's ENVISAT satellite, as a transmitter of opportunity.

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“…Many experiments using synchronization strategies based on the direct signal, including some polarimetric and interferometric applications, have been successfully performed [12,[25][26][27][28][29][30][31][32][33][34][35]. Since 2013, our team has successfully conducted several hybrid spaceborne-stationary BiSAR experiments, i.e., TerraSAR-X/stationary, in which the transmitter follows a rectilinear or curve trajectory while the receiver is fixed in one position, like at the top of a high tower or mountain, looking downwards to the illuminated scene [36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Integrated Time and Phase Synchronization Strategy for a Multichannel Spaceborne-Stationary Bistatic SAR System

et al. 2016

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Abstract:The spatial separation of the transmitter and receiver in Bistatic Synthetic Aperture Radar (BiSAR) makes it a promising and useful supplement to a classical Monostatic SAR system (MonoSAR). This paper proposes a novel integrated time and phase synchronization strategy for a multichannel spaceborne-stationary BiSAR system. Firstly, the time synchronization strategy is proposed, which includes Pulse Repetition Frequency (PRF) generation under noisy conditions, multichannel calibration and the alignment of the recorded data with the orbital data. Furthermore, the phase synchronization strategy, which fully considers the deteriorative factors in the BiSAR configuration, is well studied. The contribution of the phase synchronization strategy includes two aspects: it not only compensates the phase error, but also improves the Signal to Noise Ratio (SNR) of the obtained signals. Specifically, all direct signals on different PRF time can be reconstructed with the shift and phase compensation operation using a reference signal. Besides, since the parameters of the reference signal can be estimated only once using the selected practical direct signal and a priori information, the processing complexity is well reduced. Final imaging results with and without compensation for real data are presented to validate the proposed synchronization strategy.

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SABRINA: A SAR Bistatic Receiver for Interferometric Applications

Cited by 88 publications

References 8 publications

Use of Satellite Radar Bistatic Measurements for Crop Monitoring: A Simulation Study on Corn Fields

Use of Satellite Radar Bistatic Measurements for Crop Monitoring: A Simulation Study on Corn Fields

Bistatic SAR along track interferometry with multiple fixed receivers

Integrated Time and Phase Synchronization Strategy for a Multichannel Spaceborne-Stationary Bistatic SAR System

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