A selection of meta sensing airborne campaigns at L-, X- and Ku-band

Abstract

Synthetic Aperture Radar (SAR) is becoming more and more requested in the commercial and scientific world, especially considering the latest developments toward compact, high-resolution and cost-effective sensors. Since 2008, MetaSensing has been commercially offering services and sensors allowing a larger group of users to benefit from the advantages of SAR technology. During the last year of operation, MetaSensing has remarkably extended its radar capabilities by performing several airborne campaigns at different frequencies and interfer-ometric and polarimetric configurations. This paper reports about technical specifications of a selection of airborne data acquisitions at L, X and Ku band.

Preliminary Study of a Millimeter Wave FMCW InSAR for UAS Indoor Navigation

“…More than half of the listed sensors exploit this architectural scheme, even though not possessing a gimbal structure. Finally, it is important to remark that AiR-Based REmote Sensing (ARBRES) X-Band SAR [ 15 ] and MetaSensing X-Band SAR [ 16 ] make use of three antennas, namely two receiving and one transmitting for performing FMCW single-pass interferometry.…”

“…On the other hand, a longer sweep duration would produce several samples in the azimuth Doppler history within each sweep, thus making start-stop approximation less acceptable. The remainder of this paper focuses on the case in which start-stop approximation is valid [ 16 , 38 ].…”

Signal Processing for Digital Beamforming FMCW SAR

“…In (12), the first to third exponential terms are the azimuth phase history of multichannel FMCW SAR. The fourth term represents the range cell migration due to continuous antenna motion, that is, the Doppler impact in one sweep.…”

“…According to the algorithm [15] and the received signal model of DBF FMCW SAR described as (12), the reconstruction filters P( ) for DBF FMCW SAR can be calculated by the following equation:…”

“…Now, multichannel FMCW SAR is becoming a hot area of miniature SAR research. And many research institutions have announced their research projects on multichannel FMCW SAR [11][12][13][14].…”