Radar Stereomapping Techniques and Application to SIR-B Images of Mt. Shasta

Leberl, Franz; Domik, Gitta; Rrggam, Johannes; Kobrick, M.

doi:10.1109/tgrs.1986.289661

Cited by 38 publications

(12 citation statements)

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“…However, existing DTMs cannot be used because this eruption activity significantly changed the topography of the crater. Furthermore, DTM generation techniques such as repeat-pass InSAR (e.g., Li and Goldstein, 1990) and SAR stereomapping (e.g., Leberl et al, 1986) cannot be applied to a crater that rapidly changes scattering characteristics and shape. Therefore, we developed a method that roughly estimates the topography from one SAR image.…”

Section: Estimation Of the Topography In The Cratermentioning

confidence: 99%

Temporal variation of the Shinmoe-dake crater in the 2011 eruption revealed by spaceborne SAR observations

Ozawa

Kozono

2013

Earth Planet Sp

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Section: Estimation Of the Topography In The Cratermentioning

confidence: 99%

Temporal variation of the Shinmoe-dake crater in the 2011 eruption revealed by spaceborne SAR observations

Ozawa

Kozono

2013

Earth Planet Sp

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“…Table II shows the characteristics for the test images. Two descending standard beam-7 (DS7a and DS7b) SAR images are taken together with one of the descending standard beam-1 (DS1) images, individually, to form two stereoscopic pairs as case (1) and (2). The coordinates of the check points were calculated using the new methods with weights, and were compared with the coordinates measured from French 1 : 25 000 maps.…”

Section: Tests With Check Pointsmentioning

confidence: 99%

“…A major disadvantage of these methods is that ground control points (GCPs) are needed to determine the parameters of the stereo models [2], [3]. GCPs are the reference points providing the basis for radargrammetric model setup or the connections between coordinate transformations.…”

mentioning

confidence: 99%

A weighted least squares solution for space intersection of spaceborne stereo SAR data

Chen¹,

Dowman

2001

IEEE Trans. Geosci. Remote Sensing

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Abstract-The use of stereoscopic SAR images offers an alternative to interferometric SAR for the generation of digital elevation models (DEMs). The stereo radargrammetric method is robust and can generate DEMs of sufficient accuracy to geocode SAR images. Previous work has shown that ground coordinates with accuracy of four times the resolution cell can be obtained from ERS data without using any ground control points (GCPs), where the high accuracy of the orbit and satellite position of the order of meters introduce insignificant errors into the intersection procedure. The orbit data for RADARSAT is not as accurate as that for ERS, and the perpendicular relationship between the resultant velocity vector and the resultant range vector is uncertain in terms of image geometry. Hence, it is necessary to refine the method to allow for possible errors. This paper introduces a weighted space intersection algorithm based on an analysis of the predicted errors. A radargrammetric error model for observation errors is also formulated to predict the accuracy of the algorithm. The revised method can be used without any GCPs, but this can lead to systematic errors due to less accurate orbit data, and it has been found that the use of two GCPs provides a reasonable solution. The method is insensitive to the spatial distribution of GCPs, which is often critical in traditional methods. The error statistics of the results generated from 32 independent check points, distributed through the entire SAR image, approach the predicted errors and give positional accuracy of 38 m in three dimensions.

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“…Previously analysed data covered Mount Shasta in California (Elachi et al 1986, Ramapriyan et al 1986, Leberl et al 1986a), Cordon la Graza in Argentina (Leberl et al 1986b), a flat and rural area in Illinois and the so-called crossover point near Jose de San Martin, also in Argentina (Domik et al, 1988). Thomas et al (1987) reported on automated Synthetic Aperture Radar (SAR) image mapping using SIR-B coverage 'of an area in Bangladesh.…”

Section: Introductionmentioning

confidence: 99%

“…Table I describes the geometry of the Australian SJR-B data sets. An estimate of accuracy can be obtained by theoretical error propagation as discussed in previous work (Leberl et al 1986a) and is provided in table 2. The intersection angles are detailed in table 3 separately for the three northern and three southern stereo models; they range from 12·9°to 34'5°.…”

Section: Introductionmentioning

confidence: 99%

SIR-B stereo-radargrammetry of Australia

Leberl

Mayr

Domik

et al. 1988

International Journal of Remote Sensing

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We report on further results of an ongoing programme of radargrammetricexperimentation with SpaceShuttle Imaging Radar (SIR-B) data. Sixstereo models of orbits over Australia were processed in an analytical stereo plotter.Height accuracieswere up to ± 25m or 1·8times the range resolution. This is better than in previous SIR-B stereo work, probably due to better image quality. Some inconsistencies were encountered between look angle geometries and height measurement accuracies. While general observations about earlier SIR-B stereo results were confirmed, inconsistencies with theoretical expectations could not be fullyexplained.

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Radar Stereomapping Techniques and Application to SIR-B Images of Mt. Shasta

Cited by 38 publications

References 1 publication

Temporal variation of the Shinmoe-dake crater in the 2011 eruption revealed by spaceborne SAR observations

Temporal variation of the Shinmoe-dake crater in the 2011 eruption revealed by spaceborne SAR observations

A weighted least squares solution for space intersection of spaceborne stereo SAR data

SIR-B stereo-radargrammetry of Australia

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