Wide area, coarse resolution imaging with satellite-borne synthetic aperture radars in low-earth and geosynchronous orbitsThe LEOSAR (low-earth-orbit synthetic aperture radar) can map around the earth, while the GEOSAR (geosynchronous synthetic aperture radar) can map a large global area bounded in both longitudinal and latitudinal ranges. This paper presents the mapping capabilities and power requirements of both LEOSAR and GEOSAR. For a low-earth-orbit SAR, images of swath widths of the order of 700 km are possible with 100-m resolution and 300 watts of average transmitter power at 9375 MHz. From a SAR in a 50-deg inclined geosynchronous circular orbit, the contiguous United States can be imaged in about 6.4 hours with 100-m resolution, 345 watts of average transmitter power, and a data rate of 6 megabits/sec at 2450 MHz.
Document ID
19820044096
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Tomiyasu, K. (GE Valley Forge Space Center Philadelphia, PA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1981
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Meeting: In: International Symposium on Remote Sensing of Environment