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Radargrammetry on three planets

The International Archives of the Photogrammetry, Remote Sensing and Spacial Information Sciences

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Abstract

Synthetic Aperture Radar (SAR) can provide useful images in situations where passive optical imaging cannot, either because the microwaves used can penetrate atmospheric clouds, because active imaging can "see in the dark," or both. We have participated in the NASA Magellan mission to Venus in the 1990s and the current NASA-ESA Cassini-Huygens mission to Saturn and Titan, which have used SAR to see through the clouds of Venus and Titan, respectively, and have developed software and techniques for the production of digital topographic models (DTMs) from radar stereopairs. We are currently preparing for similar radargrammetric analysis of data from the Mini-RF instrument to be carried to the Moon on both the ISRO Chandrayaan-1 and NASA Lunar Reconnaissance Orbiter (LRO) missions later in 2008. These instruments are intended to image the permanently shadowed areas at the lunar poles and even see below the surface to detect possible water ice deposits. In this paper, we describe our approach to radargrammetric topographic mapping, based on the use of the USGS ISIS software system to ingest and prepare data, and the commercial stereoanalysis software SOCET SET (® BAE Systems), augmented with custom sensor models we have implemented, for DTM production and editing. We describe the commonalities and differences between the various data sets, and some of the lessons learned, both radargrammetric and geoscientific.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Radargrammetry on three planets
Series title:
The International Archives of the Photogrammetry, Remote Sensing and Spacial Information Sciences
Volume
XXXVII
Issue:
B4, Comission IV
Year Published:
2008
Language:
English
Publisher:
International Society for Photogrammetry and Remote Sensing
Publisher location:
Beijing, China, 7/3-11/08
Contributing office(s):
Astrogeology Science Center
Description:
8 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
The International Archives of the Photogrammetry, Remote Sensing and Spacial Information Sciences
First page:
973
Last page:
980