Efeito da topografia na resposta polarimétrica de floresta tropical em imagens PALSAR/ALOS

Polyanna Da Conceicao Bispo; João Roberto  dos Santos; Márcio  de Morisson Valeriano; Paulo Maurício  Lima de Alencastro Graça

doi:10.5777/ambiencia.2012.04.05

Efeito da topografia na resposta polarimétrica de floresta tropical em imagens PALSAR/ALOS

Translated title of the contribution: Effect of topography on the polarimetric response of tropical forest in PALSAR/ALOS images

Polyanna Da Conceicao Bispo, João Roberto dos Santos, Márcio de Morisson Valeriano, Paulo Maurício Lima de Alencastro Graça

Geography

Research output: Contribution to journal › Article › peer-review

Abstract

The dependence of backscatter coefficient (σ°) on different targets forest has not been deeply investigated as affected by topographic variations, as seen in the literature.The objective of this study is to evaluate the effect of topography on backscatter derived from rainforest areas in PALSAR / ALOS (L-band) images. An analysis of the polarimetric responses of forest plots located in flat, gentle and undulated terrain was performed. The polarimetric responses showed a typical behavior of the topography effect on the radar signal through the height of the pedestal, which indicates the intensity of depolarization of the incident wave. There was a higher frequency of occurrence and intensity of depolarization in the plots on gentle and undulated terrains, with a marked depolarization as a typical pattern for the last condition.

Translated title of the contribution	Effect of topography on the polarimetric response of tropical forest in PALSAR/ALOS images
Original language	Portuguese
Article number	4
Pages (from-to)	501-510
Number of pages	10
Journal	AMBIÊNCIA
Volume	8
Issue number	4
DOIs	https://doi.org/10.5777/ambiencia.2012.04.05
Publication status	Published - 2012

Keywords

Remote sensing
SAR
forestry
polarimetric responses
topography

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10.5777/ambiencia.2012.04.05

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title = "Efeito da topografia na resposta polarim{\'e}trica de floresta tropical em imagens PALSAR/ALOS",

abstract = "The dependence of backscatter coefficient (σ°) on different targets forest has not been deeply investigated as affected by topographic variations, as seen in the literature.The objective of this study is to evaluate the effect of topography on backscatter derived from rainforest areas in PALSAR / ALOS (L-band) images. An analysis of the polarimetric responses of forest plots located in flat, gentle and undulated terrain was performed. The polarimetric responses showed a typical behavior of the topography effect on the radar signal through the height of the pedestal, which indicates the intensity of depolarization of the incident wave. There was a higher frequency of occurrence and intensity of depolarization in the plots on gentle and undulated terrains, with a marked depolarization as a typical pattern for the last condition.",

keywords = "Remote sensing, SAR, forestry, polarimetric responses, topography",

author = "{Da Conceicao Bispo}, Polyanna and {dos Santos}, {Jo{\~a}o Roberto} and {de Morisson Valeriano}, M{\'a}rcio and {Lima de Alencastro Gra{\c c}a}, {Paulo Maur{\'i}cio}",

year = "2012",

doi = "10.5777/ambiencia.2012.04.05",

language = "Portuguese",

volume = "8",

pages = "501--510",

journal = "AMBI{\^E}NCIA",

issn = "2175-9405",

publisher = "Universidade Estadual do Centro-Oeste ",

number = "4",

}

TY - JOUR

T1 - Efeito da topografia na resposta polarimétrica de floresta tropical em imagens PALSAR/ALOS

AU - Da Conceicao Bispo, Polyanna

AU - dos Santos, João Roberto

AU - de Morisson Valeriano, Márcio

AU - Lima de Alencastro Graça, Paulo Maurício

PY - 2012

Y1 - 2012

N2 - The dependence of backscatter coefficient (σ°) on different targets forest has not been deeply investigated as affected by topographic variations, as seen in the literature.The objective of this study is to evaluate the effect of topography on backscatter derived from rainforest areas in PALSAR / ALOS (L-band) images. An analysis of the polarimetric responses of forest plots located in flat, gentle and undulated terrain was performed. The polarimetric responses showed a typical behavior of the topography effect on the radar signal through the height of the pedestal, which indicates the intensity of depolarization of the incident wave. There was a higher frequency of occurrence and intensity of depolarization in the plots on gentle and undulated terrains, with a marked depolarization as a typical pattern for the last condition.

AB - The dependence of backscatter coefficient (σ°) on different targets forest has not been deeply investigated as affected by topographic variations, as seen in the literature.The objective of this study is to evaluate the effect of topography on backscatter derived from rainforest areas in PALSAR / ALOS (L-band) images. An analysis of the polarimetric responses of forest plots located in flat, gentle and undulated terrain was performed. The polarimetric responses showed a typical behavior of the topography effect on the radar signal through the height of the pedestal, which indicates the intensity of depolarization of the incident wave. There was a higher frequency of occurrence and intensity of depolarization in the plots on gentle and undulated terrains, with a marked depolarization as a typical pattern for the last condition.

KW - Remote sensing

KW - SAR

KW - forestry

KW - polarimetric responses

KW - topography

U2 - 10.5777/ambiencia.2012.04.05

DO - 10.5777/ambiencia.2012.04.05

M3 - Article

SN - 2175-9405

VL - 8

SP - 501

EP - 510

JO - AMBIÊNCIA

JF - AMBIÊNCIA

IS - 4

M1 - 4

ER -

Efeito da topografia na resposta polarimétrica de floresta tropical em imagens PALSAR/ALOS

Abstract

Keywords

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