Fortgeschrittene hochauflösende SAR Interferometrie urbaner Szenen mit flugzeuggetragenem Millimeterwellen Radar

Schmitt, Michael; Magnard, Christophe; Stanko, Stephan; Ackermann, C.; Stilla, Uwe

doi:10.1127/1432-8364/2013/0199

Cited by 8 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, this experiment can also be seen as a study exploring the limits of TomoSAR with respect to potential future mission design. The second motivation is the employment of millimetre‐wave SAR, which is supposed to follow the Gaussian scattering assumption even in urban areas because of the high sensitivity to surface roughness [44].…”

Section: Experimental Airborne Millimetre‐wave Single‐pass Multi‐bamentioning

confidence: 99%

Maximum‐likelihood‐based approach for single‐pass synthetic aperture radar tomography over urban areas

Schmitt

Stilla

2014

IET Radar, Sonar & Navigation

Self Cite

View full text Add to dashboard Cite

Synthetic aperture radar (SAR) tomography (TomoSAR) is one of the key techniques in remote sensing for a sophisticated, three-dimensional (3D) analysis of complex scenes such as forests or urban areas. During recent years, much progress has been made in order to deal with unfavourable data conditions and to further enhance the achievable resolutions. Since TomoSAR has essentially be seen as a spectral estimation problem in the context of array signal processing, most of the methods investigated until now rely on a relatively large tomographic aperture and a relatively high number of receiving antennas in order to be able to separately reconstruct scatterers below the Rayleigh resolution limit. In contrast to that, this study proposes a maximum-likelihood-based approach for tomographic SAR inversion, which provides a better height resolution than conventional array signal processing approaches even if the number of antennas or the overall baseline size is limited. The algorithm is tested on real multi-baseline SAR data acquired over an urban area by an airborne single-pass fourantenna system operating in the millimetre-wave domain. First results show the feasibility of the method both with respect to 3D scatterer reconstruction and 3D SAR focusing.

show abstract

Section: Experimental Airborne Millimetre‐wave Single‐pass Multi‐bamentioning

confidence: 99%

Maximum‐likelihood‐based approach for single‐pass synthetic aperture radar tomography over urban areas

Schmitt

Stilla

2014

IET Radar, Sonar & Navigation

Self Cite

View full text Add to dashboard Cite

show abstract

“…W HILE synthetic aperture radar interferometry (InSAR) has been used operationally for terrain reconstruction for years [1]- [3], the reconstruction of digital surface models (DSMs) of urban areas from InSAR data is still a challenging task [4], [5]. This is caused by the well-known layover and shadowing effects, which lead to a mixture of phase measurements and a lack of exploitable phase observations, respectively, if elevated objects are imaged.…”

Section: Introductionmentioning

confidence: 99%

Benefit of Using Multiple Baselines and Multiple Aspects for SAR Interferometry of Urban Areas

Schmitt¹,

Schönberger²,

Stilla³

2014

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

Self Cite

View full text Add to dashboard Cite

In this paper, extensive real-data experiments for the investigation of the benefit of exploiting multiple aspects and multiple baselines for the reconstruction of urban surface models by synthetic aperture radar interferometry are documented. These experiments are carried out within a recently proposed reconstruction framework that allows the fusion of almost arbitrary configurations of multi-aspect multi-baseline InSAR data. The results based on airborne decimeter-resolution millimeterwave imagery prove and quantify that multiple baselines help to solve the phase ambiguity problem, while multiple aspects reduce the parts of the scene affected by radar shadowing. In addition, the inherent redundancy provides a significant improvement in the achievable reconstruction accuracy, which is evaluated relative to the reconstruction error common for conventional single-aspect single-baseline SAR interferometry.Index Terms-Maximum-likelihood estimation, multi-aspect, multi-baseline, synthetic aperture radar interferometry (InSAR), synthetic aperture radar (SAR), urban areas.

show abstract

“…Examples of such systems are the C-/X-Band F-SAR [12], the X-Band PAMIR [13], the X-/Ku-Band RAMSES [14], the X-Band SETHI [15], the X-Band OrbiSAR [9] and the Ka-Band MEMPHIS [16][17][18][19][20]. As a matter of fact, in these systems the InSAR baseline can be as small as required by the geometrical constraints imposed by small airborne platforms.…”

Section: Introductionmentioning

confidence: 99%

The InSAeS4 Airborne X-Band Interferometric SAR System: A First Assessment on Its Imaging and Topographic Mapping Capabilities

Perna

Esposito

Amaral³

et al. 2016

Remote Sensing

View full text Add to dashboard Cite

We present in this work a first assessment of the imaging and topographic mapping capabilities of the InSAeS4 system, which is a single-pass interferometric airborne X-Band Synthetic Aperture Radar (SAR). In particular, we first provide a brief description of the InSAeS4 sensor. Then, we discuss the results of our analysis on the SAR and interferometric SAR products relevant to the first flight-test campaign. More specifically, we have exploited as reference the GPS measurements relevant to nine Corner Reflectors (CRs) deployed over the illuminated area during the campaign and a laser scanner Digital Elevation Model (DEM). From the analysis carried out on the CRs we achieved a mean geometric resolution, for the SAR products, of about 0.14 m in azimuth and 0.49 m in range, a positioning misalignment with standard deviation of 0.07 m in range and 0.08 m in azimuth, and a height error with standard deviation of 0.51 m. From the comparison with the laser scanner DEM we estimated a height error with standard deviation of 1.57 m.

show abstract

Fortgeschrittene hochauflösende SAR Interferometrie urbaner Szenen mit flugzeuggetragenem Millimeterwellen Radar

Cited by 8 publications

References 31 publications

Maximum‐likelihood‐based approach for single‐pass synthetic aperture radar tomography over urban areas

Maximum‐likelihood‐based approach for single‐pass synthetic aperture radar tomography over urban areas

Benefit of Using Multiple Baselines and Multiple Aspects for SAR Interferometry of Urban Areas

The InSAeS4 Airborne X-Band Interferometric SAR System: A First Assessment on Its Imaging and Topographic Mapping Capabilities

Contact Info

Product

Resources

About