An introduction to old and new SAR interferometric techniques
Abstract
Classic techniques of Synthetic Aperture Radar (SAR) used in obtaining topographic information are reviewed. Special attention is given to those techniques which exploit the phase information of interferometric signals to derive the elevation of each point of the detected scene. These classic techniques are introduced and the problems involved are discussed. A new method, based on multifrequency antennas and on a proper use of the Chinese remainder theorem, is presented. This technique shows advantages over traditional approaches, in accuracy of results and simplicity of use. Some technological expedients must be verified and adopted to simplify the design of the transmitting system.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- May 1990
- Bibcode:
- 1990STIN...9115445A
- Keywords:
-
- Interferometry;
- Satellite Altimetry;
- Synthetic Aperture Radar;
- Topography;
- Earth Observations (From Space);
- Geodesy;
- Geodetic Accuracy;
- Multispectral Radar;
- Radar Measurement;
- Communications and Radar