The TOPSAR interferometric radar topographic mapping instrument

Zebker, H. A.; Madsen, S.N.; Martin, Jan M. L.; Wheeler, K.; Miller, Theodore K.; Lou, Yunling; Alberti, G.; Vetrella, S.; Cucci, A.

doi:10.1109/36.175328

Cited by 192 publications

(48 citation statements)

References 9 publications

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“…The NASA topographic interferometric synthetic aperture radar (TOPSAR) instrument is carried by a DC8 aircraft and operates at the 56.6 mm C-band radar wavelength (Zebker et al 1992). The principle of single-pass airborne interferometric radar is to transmit radar energy to the surface of the Earth, and to measure the energy reflected back at two spatially separate antennae, mounted on the port side of the aircraft.…”

Section: Methodsmentioning

confidence: 99%

Emplacement of the large andesite lava flow in the Oturere Stream valley, Tongariro Volcano, from airborne interferometric radar

Stevens¹

2002

New Zealand Journal of Geology and Geophysics

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The prehistoric eruption of an exceptionally large andesitic lava flow into a glacial valley on the eastern flanks of Tongariro Volcano, North Island, New Zealand, prompts questions about its size and emplacement behaviour. In November 1996, the area was mapped topographically to a high resolution by the NASA TOPSAR airborne interferometric radar instrument. The resulting digital elevation model (DEM), with a spatial resolution of 10 m and a vertical accuracy of 1-3 m, allowed the lava volume to be constrained by two methods: from an estimation of the mean lava thickness from the flow margins, and from low-order polynomial interpolation of the underlying valley form. The TOPSAR DEM provided uniquely detailed measurements of the surface features of the flow-most notably, the levees and surface folding-which show that the lava was emplaced in one broad channel. Analysis of the surface features, in context with the surrounding topography, shows that the surface folding in the medial area of the flow was caused largely by the topographic constraint. This is a previously unobserved cause of surface folding in andesite lava flows.

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Section: Methodsmentioning

confidence: 99%

Emplacement of the large andesite lava flow in the Oturere Stream valley, Tongariro Volcano, from airborne interferometric radar

Stevens¹

2002

New Zealand Journal of Geology and Geophysics

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“…The procedure can be either single-pass interferometry (the two scenes are acquired at the same time) or repeat-pass interferometry (the two scenes are acquired at different times) and the systems can be on airborne or satellite platforms. Airborne radar systems use single pass interferometry, such as TOPSAR, which generates DEMs with 10 m spatial resolution and 1-2 m accuracy (Zebker et al, 1992).…”

Section: Dem Sources For Volcano Morphometrymentioning

confidence: 99%

Systematic morphometric characterization of volcanic edifices using digital elevation models

et al. 2012

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“…In determining the absolute phase, they used the multi-view technique (with a distance direction factor of four and orientation direction factor of 32) and finally obtained a topographic map of the region with a horizontal error of 10 m. Comparison between the obtained result and DEM shows the RMS survey error is two meters in smooth areas and five to six meter in mountainous areas, including the errors of-12 m and +25 m in determining the radar elevation. The gross accuracy level tallies with the standard DEM (Zebker et al, 1992).…”

Section: Applications Of the Insar Techniquementioning

confidence: 99%

The INSAR technique: its principle and applications to mapping the deformation field of earthquakes

Shan

1998

Acta Seimol. Sin.

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The development, state-of-art and prospects of application of the radar remote sensing technique are presented.The principle of the INSAR (Interferometric Synthetic Aperture Radar) technique is expounded in more details. Some applications of this technique in measuring seismic dislocations are given. Finally, it is pointed out that IN-SAR has a non-replaceable application potential in observing ground surface vertical deformations; it would provide an entirely new means and method for monitoring the dynamic field of earthquakes and give an extremely great impetus to the future earthquake prediction work.

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The TOPSAR interferometric radar topographic mapping instrument

Cited by 192 publications

References 9 publications

Emplacement of the large andesite lava flow in the Oturere Stream valley, Tongariro Volcano, from airborne interferometric radar

Emplacement of the large andesite lava flow in the Oturere Stream valley, Tongariro Volcano, from airborne interferometric radar

Systematic morphometric characterization of volcanic edifices using digital elevation models

The INSAR technique: its principle and applications to mapping the deformation field of earthquakes

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