Use of the ER-2 and IFSAR for digital terrain matrix, difference digital terrain matrix, and vector difference digital terrain matrix collection
Conference
·
OSTI ID:379505
- Lockheed Martin Missiles & Space Advanced Technology Center, Palo Alto, CA (United States)
A national digital terrain matrix (DTM) archive with sub-meter elevation precision and three meter or less post spacing will have numerous commercial government and research uses. The Lockheed Martin Missiles and Space Digital Terrain Elevation Mapping System (DTEMS) will be used to collect a DTM archive with average relative one {sigma} elevation precision of 0.3 meter, average absolute one U elevation precision less than 0.6 meter, and one to three meter post spacing (posting). DTEMS data will satisfy National Map Accuracy Standards (NMAS) contour intervals of one to two meters. DTEMS will also archive orth-rectified digital polarimetric synthetic aperture radar (SAR) imagery with one to three meter resolution. A difference digital terrain matrix (DDTM) is defined as a digital data file containing elevation changes in a DTM. A DDTM archive will be useful for detection and measurement of natural or man made changes in terrain elevation. Using DTEMS to make periodic repeat DTM collections and coherent elevation change detection (CECD) to sense small elevation changes, DTEMS will be capable of resolving elevation changes of a few centimeters. A vector difference digital terrain matrix (VDDTM) is defined as a digital data file containing the X, Y and Z displacements of the ground. Using CECD with a sub-pixel digital image correlation (SPDIC) technique on pairs of DTM`s and radar images collected by DTEMS, it will be possible to measure X and Y ground displacements with resolutions of ten centimeters at posts with spacing of ten meters and measure the elevation (Z) displacement with a resolution of a few centimeters. 8 refs., 6 figs.
- OSTI ID:
- 379505
- Report Number(s):
- CONF-960613--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Applications of products obtained from digital terrain models
IFSAR for the Rapid Terrain Visualization Demonstration
Applicability of digital terrain analyses to wind energy prospecting and siting
Conference
·
Thu Oct 31 23:00:00 EST 1996
·
OSTI ID:390700
IFSAR for the Rapid Terrain Visualization Demonstration
Conference
·
Mon Oct 30 23:00:00 EST 2000
·
OSTI ID:766583
Applicability of digital terrain analyses to wind energy prospecting and siting
Conference
·
Thu Jul 01 00:00:00 EDT 1993
·
OSTI ID:10108443