PE&RS January 2000

Cover Image

This four-meter resolution color image of San Diego, California was collected October 7, 1999 by Space Imaging’s IKONOS satellite. The image features Sea World, Balboa Park and Coronado Island.  Image courtesy of Space Imaging. ERDAS IMAGINE 8.4 geographic imaging software was used to enhance the contrast in the bright areas of the image (such as the airfields and other large buildings shown in the zoom window), while maintaining a good overall contrast balance. ERDAS IMAGINE easily handles the expanded 11-bit data range provided by the IKONOS satellite. (See interview on page 5.)
For more information about IKONOS and Space Imaging, Inc. contact: Web: www.spaceimaging.com, Customer Service: 800-232-9037 or 301-552—537
For more information about geographic imaging by ERDAS, Inc., contact: Web: www.erdas.com; Phone: 404-248-9000; Fax: 404-248-9400; Toll Free: 877-GO ERDAS (463-7327); E-mail: info@erdas.com

Interview

5 Understanding the Future of Commercial  Remote Sensing
Linda Lidov, Rich Miller,  Dana M. Wormer, and Kimberly A. Tilley

Highlight Article

17 An Approach to the Development of a Sustainable National Geomatics Infrastructure
Robert A. Ryerson and Robert J. Batterham

Peer-Reviewed Articles (Click the linked titles to see the full abstract)

41 Radargrammetric Parameter Evaluation of an Airborne SAR Image
Joz Wu and De-Chen Lin

Time-dependent parameter modeling together with squint angle and scale parameter estimation is incorporated into the radargrammetric processing of an airborne SAR image, leading to improved positional accuracies.

49 Fusion of High Spatial and Spectral Resolution Images:  The ARSIS Concept and Its Implementation
Thierry Ranchin and Lucien Wald

The ARSIS concept permits the construction of synthetic multispectral images with a better spatial resolution and an accurate spectral content.

65 Airborne Laser Mapping of Assateague National Seashore Beach
W.B. Krabill, C.W. Wright, R.N. Swift, E.B. Frederick, S.S. Manizade, J.K. Yungel, C.F. Martin, J.G. Sonntag, Mark Duffy, William Hulslander, and John C. Brock

An independent assessment of the accuracy of the Airborne Topographic Mapper survey is provided by comparison to surface surveys which were conducted using standard techniques.

73 Multispectral Imagery Advanced Band Sharpening Study
Jim Vrabel

The Effective Ground Sample Distance (GSD) of the sharpened product is shown to be close to the GSD of the panchromatic sharpening band, the sharpened products demonstrate increased utility compared to the original low-resolution imagery, and the degree of increased utility for sharpened products can be predicted prior to fusion. 

81 Requirement of Ground Tie Points for InSAR DEM Generation
Guoqing Sun, K. Jon Ranson, Jack Bufton, and Michael Roth

The use of Shuttle Laser Altimeter (SLA) data as tie points for reducing the error of Interferometry SAR generated digital elevation models is described.

87 Generating Viewsheds without Using Sightlines
Jianjun Wang, Gary J. Robinson, and Kevin White

By using reference planes rather than sightlines, considerable savings in computing time can be made.

91 Matching Road Edges in Stereo-Image Sequences Using Data Association Techniques
Ayman F. Habib

The Multiple Hypothesis Approach proved to be superior to the Nearest-Neighbor Standard Algorithm in tracking road edges in stereo-image sequences acquired by a mobile mapping system.

Announcements
15 ASPRS Vice Presidential Candidates for 2000
47 PE&RS Special Issue – Call for Papers
62 ASPRS DC2000 – Annual Conference
72 ISPRS Awards Deadlines
85 Correction

Columns & Updates
29 In Memoriam – Tamsin G. Barnes
29 Headquarters News
30 Grids & Datums – The Czech Republic
33 Industry News

Departments
36 Who’s Who in ASPRS
37 New Members
38 Sustaining Members
40 Index to Advertisers
48 Instructions to Authors
64 Forthcoming Articles
99 Calendar
100 Classifieds
103 Bookstore
107 Professional Directory
111 Membership Application

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