A model for altimeter returns from penetrable geophysical media

Robert J. Adams, Gary S. Brown

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The radar altimeter is a well-understood instrument for monitoring the world's oceans. There has been a recent effort to extend altimeter techniques to the study of the world's ice sheets. To this end, several authors have developed average altimeter waveform models that incorporate pulse-penetration effects to varying degrees. In this paper, we extend these models to more adequately account for the effects of surface roughness and subsurface inhomogeneities on the average scattered waveform. This leads to a waveform model that is useful in analyzing altimeter returns obtained over a wider range of geophysical media, such as snow, ice, and foliage, which are characterized by strong subsurface inhomogeneities. Representative results of applying this extended model to airborne altimeter measurements made over various regions of the Greenland ice sheet in September 1991 are provided.

Original languageEnglish
Pages (from-to)1784-1793
Number of pages10
JournalIEEE Transactions on Geoscience and Remote Sensing
Volume36
Issue number5 PART 2
DOIs
StatePublished - 1998

Bibliographical note

Funding Information:
Manuscript received February 6, 1998; revised June 12, 1998. This work was supported by the Office of Naval Research’s Sea Ice Accelerated Research Initiative under Grant N00014-93-1-0123.

Keywords

  • Random volume scattering
  • Remote sensing of snow
  • Rough surface scattering
  • Subsurface scattering

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • General Earth and Planetary Sciences

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