The UK NERC fully portable polarimetric ground-based synthetic aperture radar (GB-SAR)

Bennett, John C.; Morrison, K.; Race, A.; Cookmartin, G.; Quegan, S.

doi:10.1109/igarss.2000.858393

Cited by 14 publications

(11 citation statements)

References 5 publications

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“…An indoor system is presented in [32] followed by a portable outdoors version [33]. A broadband polarimetric SAR system with two dimensional aperture synthesis is introduced in [34], with measurement results presented in [35].…”

Section: A State Of the Artmentioning

confidence: 99%

Polarimetric Calibration of the Ku-Band Advanced Polarimetric Radar Interferometer

Baffelli

Frey

Werner

et al. 2018

IEEE Trans. Geosci. Remote Sensing

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Abstract-Differential interferometry using groundbased radar systems permits to monitor displacements in natural terrain with high flexibility in location, time of acquisition and revisit time. In combination with polarimetric imaging, discrimination of different scattering mechanisms present in a resolution cell can be obtained simultaneously with the estimation of surface displacement. In this paper we present the pre-processing steps and the calibration procedure required to produce high-quality calibrated polarimetric single-look complex imagery with KAPRI, a new portable Ku-band polarimetric radar interferometer. The processing of KAPRI data into SLC images is addressed, including the correction of beam squint and of azimuthal phase variations. A polarimetric calibration model adapted to the acquisition mode is presented and used to produce calibrated polarimetric covariance matrix data. The methods are validated by means of a scene containing five trihedral corner reflectors. Data pre-processing is assessed by analyzing the oversampled response of a corner reflector and the polarimetric calibration quality is verified by computing polarimetric signatures and residual calibration parameters.

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Section: A State Of the Artmentioning

confidence: 99%

Polarimetric Calibration of the Ku-Band Advanced Polarimetric Radar Interferometer

Baffelli

Frey

Werner

et al. 2018

IEEE Trans. Geosci. Remote Sensing

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“…Fig. 2 shows that a scan across the full aperture, L, consists of a series of K monotonically spaced samples, of which N adjacent data samples constitute a sub-aperture, D. We consider the case of a stepped-frequency CW radar operating in the frequency domain, as this is most applicable to the ground-based case [3]. However, the scheme is equally applicable to a pulsed system operating in the time domain.…”

Section: Imaging Schemementioning

confidence: 97%

Tomographic Profiling (TP) - a scheme for vertical backscatter profiling of biogeophysical targets at constant incidence angles

Morrison

Bennett

2011

2011 IEEE International Geoscience and Remote Sensing Symposium

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Tomographic Profiling (TP) is a new imaging technique which provides a vertical profile of the backscatter through a volume. Data is collected as for normal SAR imaging, but with the antennas aligned along-track. The real antenna provides a wide beam in the along-track direction, which is sharpened by addition of the elemental measurements across a synthetic sub-aperture. A novelty of the scheme is the ability to produce an image transect in which the incidence angle is constant at every point. This is accomplished by incrementally sliding the sub-aperture across the full aperture, and utilising the appropriate sub-aperture to provide the necessary viewing geometry at each pixel. By suitable phasing between the sub-aperture elements, the synthesized beam can be steered in angle within the wide angular extent of the real beam, allowing post-measurement retrieval of the backscattering properties of the scene over a continuous range of incidence angles from a single scan.

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“…In this case, the left-right ambiguity can be resolved by electronically steering the receiving beam to the specific angle in both side of the platform, and the along track resolution can be also improved since the broadside of the array is along the platform path. where (2) is a Hankel function of the 2nd kind [29], and the approximation is taken when the range is much greater than the wavelength, the transmitting and receiving two way propagation ground return is given as:…”

Section: Forward Looking Mimo Vehicular Sarmentioning

confidence: 99%

“…As shown in Figure 8, the distance from transiting to focal point = √( ) 2 + ( ) 2 and the distance from focal point ( , ) to receiving element…”

Section: Forward Looking Mimo Vehicular Sarmentioning

confidence: 99%

“…systems have drawn huge amount of attention to give high resolution images of the interested scene surrounding the vehicular platform which utilizes economic electronic and hardware equipment with narrow bandwidth of frequencies [1][2][3][4][5][6]. For example, automatic unmanned vehicle requires reliable cognitive imaging system to map the nearby man-made structures, such as walls, bridges or buildings; several ground penetrating radar (GPR) systems also employ the synthetic aperture idea to enhance the detection performance of underground objects [7,8].…”

Section: Introductionmentioning

confidence: 99%

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Vehicular MIMO SAR imaging in multipath environments

Krolik

2011

2011 IEEE RadarCon (RADAR)

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The UK NERC fully portable polarimetric ground-based synthetic aperture radar (GB-SAR)

Cited by 14 publications

References 5 publications

Polarimetric Calibration of the Ku-Band Advanced Polarimetric Radar Interferometer

Polarimetric Calibration of the Ku-Band Advanced Polarimetric Radar Interferometer

Tomographic Profiling (TP) - a scheme for vertical backscatter profiling of biogeophysical targets at constant incidence angles

Vehicular MIMO SAR imaging in multipath environments

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