What question did this study set out to answer?

To characterize the sources of echo decorrelation in repeat-pass synthetic aperture radar interferometry and evaluate its feasibility for topographic mapping over vegetated terrain.

January 1, 1992IEEE Transactions on Geoscience and Remote Sensing

Decorrelation in interferometric radar echoes

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Authors

HZH. A. ZebkerStanford University JVJohn VillasenorBrookings Institution

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Implication

Methodological study demonstrates temporal decorrelation effects in repeat-pass radar interferometry across vegetated landscapes, indicating the feasibility of global digital terrain mapping.

Key Points

To characterize the sources of echo decorrelation in repeat-pass synthetic aperture radar interferometry and evaluate its feasibility for topographic mapping over vegetated terrain.
Implemented repeat-pass interferometry using a single synthetic aperture radar system operating in a nearly repeating orbital geometry.
Formulated echo correlation statistics to separate temporal surficial changes from other decorrelation mechanisms across forested areas and unvegetated lava flows in Oregon.
Temporal decorrelation increased progressively over time as surficial backscatter changed across vegetated environments.
Digital terrain model generation remained technically feasible despite temporal decorrelation, successfully yielding accurate elevation maps for both forested regions and lava flows.

Cite This Study

Zebker et al. (1992) studied this question.

synapsesocial.com/papers/69700b3dc93e960607cbb6e7 https://doi.org/10.1109/36.175330

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Implication

Methodological study demonstrates temporal decorrelation effects in repeat-pass radar interferometry across vegetated landscapes, indicating the feasibility of global digital terrain mapping.

Decorrelation in interferometric radar echoes

Discussion

Member takes

Implication

Key Points

Cite This Study

Decorrelation in interferometric radar echoes

Discussion

Member takes

Implication

Key Points

Cite This Study

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