Radiometric correction of saturated SAR data

Author

Shimada, Masanobu

Author_Institution

Earth Obs. Res. Center, Nat. Space Dev. Agency of Japan, Tokyo, Japan

Volume

37

Issue

1

fYear

1999

fDate

1/1/1999 12:00:00 AM

Firstpage

467

Lastpage

478

Abstract

An imaging (or correlation) process for saturated synthetic aperture radar (SAR) data that is caused by the limited dynamic range of the analog-to-digital converter (ADC) was investigated using the stochastic process approach. The theoretical models for the correlation power and its normalized standard deviation were derived. Based on these, a radiometric correction method for the saturated SAR data was proposed. Error analysis was conducted for the data acquired in the manual and automatic gain modes. It was shown that the proposed method can correct the saturated SAR data of both modes, although the data in automatic gain are more accurately corrected than that in manual gain; the proposed method was verified by using the JERS-1 SAR data

Keywords

geophysical techniques; radar imaging; remote sensing by radar; synthetic aperture radar; terrain mapping; analog-to-digital converter; correlation power; geophysical measurement technique; land surface; limited dynamic range; normalized standard deviation; radar imaging; radar remote sensing; radiometric correction; saturated SAR data; stochastic process approach; synthetic aperture radar; terrain mapping; theoretical model; Additive noise; Analog-digital conversion; Dynamic range; Gaussian noise; Instruments; Noise generators; Radiometry; Sea measurements; Signal processing; Synthetic aperture radar;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.739091

Filename

739091