Mutual coupling effects on antenna radiation pattern: An experimental study applied to interferometric radiometers

Camps, Adriano; Torres, F.; Corbella, Ignasi; Bará, J.; Paco, Pedro de

doi:10.1029/98rs02813

Cited by 21 publications

(21 citation statements)

References 13 publications

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“…with coupling´" V without coupling (13) An alternative way to interpret Equation (10) is as a linear combination of the isolated antenna patterns with a phase term equal to the baseline and amplitude proportional to the mutual impedance [4]. For a linear array of antennas spaced d wavelengths along the z axis (e.g., at positions 0, d, 2d, 3d .…”

Section: Antenna Array Componentmentioning

confidence: 99%

“…V (u, v, w) = T · FWF · S , S , * + CN (4) with S / , the S-parameters of the Noise Injection network from input port 0 to output ports m or n, and with FWF0 the complex fringe-wash function at the origin, CN = T · (I − S · S * ) · δ , and T0 = 290 K. The procedure to compute Equations (1)- (3) is sketched in Figure 2. In the next sections, each submodule is described.…”

Section: Instrument Software Modulementioning

confidence: 99%

“…The measured visibility samples under antenna coupling conditions can be computed through the mutual coupling matrix " C, as defined in [3,4]:…”

Section: Antenna Array Componentmentioning

confidence: 99%

“…This model allows us to simulate in a realistic way complex three-dimensional (3D) arrays with arbitrary configurations and antenna orientations such as the one shown in Figure 5c. The measured visibility samples under antenna coupling conditions can be computed through the mutual coupling matrix ̿ , as defined in [3,4]:…”

Section: Antenna Array Componentmentioning

confidence: 99%

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Microwave Imaging Radiometers by Aperture Synthesis Performance Simulator (Part 2): Instrument Modeling, Calibration, and Image Reconstruction Algorithms

et al. 2016

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Abstract:The Synthetic Aperture Interferometric Radiometer Performance Simulator (SAIRPS) has been a three-year project sponsored by the European Space Agency (ESA) to develop a completely generic end-to-end performance simulator of arbitrary synthetic aperture interferometric radiometers. In a companion manuscript (Part I), the Radiative Transfer Module used to generate synthetic fully polarimetric brightness temperatures from 1 to 100 GHz, including land and ocean covers, as well as the atmosphere, is described in detail. In this manuscript (Part II), the instrument model, the calibration procedure, and the imaging algorithms are described. The instrument model includes the simulation of the array topology in terms of the number of antenna elements, the time-dependent position and orientation, and the arbitrary receivers' topology which can be modified from a very generic one by connecting and disconnecting subsystems. All the parameters can be, one by one, defined either by mathematical functions or by input data files, including the frequency and temperature dependence. Generic calibration algorithms including an external point source, the flat target transformation, and the two-level correlated noise injection are described. Finally, different image reconstruction algorithms suitable for arbitrary array topologies have also been implemented and tested. Simulation results have been validated and selected results are presented.

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Section: Antenna Array Componentmentioning

confidence: 99%

Section: Instrument Software Modulementioning

confidence: 99%

“…The measured visibility samples under antenna coupling conditions can be computed through the mutual coupling matrix " C, as defined in [3,4]:…”

Section: Antenna Array Componentmentioning

confidence: 99%

Section: Antenna Array Componentmentioning

confidence: 99%

See 2 more Smart Citations

Microwave Imaging Radiometers by Aperture Synthesis Performance Simulator (Part 2): Instrument Modeling, Calibration, and Image Reconstruction Algorithms

et al. 2016

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show abstract

“…As it can be noticed, for the high-contrast scene the radiometric accuracy degradation 4 in the circular region 3 Region selected by ESA to compute the SMOS error budget [4], since it contains approximately 3000 points (more than enough for statistical purposes), error amplification is moderate 1.5, and it is far from the aliases tails. 4 Same criterion for radiometric accuracy degradation as specified by ESA in [11]. Fig.…”

Section: Radiometric Accuracy Degradation Due To Antenna Patternmentioning

confidence: 99%