MeoSAR System Concepts & Technologies for Earth Remote Sensing

Abstract

Next-generation interferometric synthetic aperture radar (InSAR) systems may provide the basis for establishing an earthquake-forecasting capability within a twenty-year time frame. Such systems would need to provide data with fine temporal resolution, so the system architecture would need to allow for wide-area coverage in order to minimize the effective interferometric repeat time. This paper discusses the coverage advantages associated with medium-Earth orbit (MEO) InSAR systems for observing geophysical phenomena. As MEO architectures dictate the need for large radar antennas, this paper also presents a discussion of advanced antenna technologies-and associated challenges-that might provide revolutionary decreases in the mass densities of large radar aperture antennas.

GNSS-based BiSAR imaging using modified range migration algorithm

“…Synthetic aperture radar (SAR) constellations in medium Earth orbit (MEO) have been proposed and discussed for Earth observation by a number of pioneering institutions, such as the Jet Propulsion Laboratory and the German Aerospace Centre [1][2][3] during the last years. The major advantages of such a technology like increased area coverage, short revisit times, the ability to provide very accurate surface displacement measurements etc have been discussed.…”