Analysis of ground moving objects using SRTM/X-SAR data

Detecting moving targets in dual-channel high resolution spaceborne SAR images with a compound detection scheme

“…At the german aerospace center (DLR) a modular traffic processor has already been developed which processes SAR data specifically with the objective of moving vehicle detection [11], [12]. The proposed likelkihood ratio detector has been included additionally to other detection methods into this environment to enable analysis of this detection scheme.…”

Directional Moving Target Indication: A Novel SAR Ambiguity Function for Traffic Monitoring

“…The echoed signal in the fast-time frequency domain ω and slow-time spatial domain u is, after pulse compression, given by [2,4]…”

“…Many recent publications address the problem of civil traffic monitoring using spaceborne and airborne Synthetic Aperture Radar (SAR) [1][2][3][4][5][6][7][8]. The main reasons for this growing attention are its all weather capability and large spatial coverage, which contrasts with those of conventional traffic monitoring sensors.…”

Design and Deployment Analysis of Modular Deployable Structure for Large Antennas

“…Nomenclature c 1 , c 2 = design constant 1 and 2, deg DT 1 = driving torques of drive mechanism A, N · m DT 2 = driving torques of drive mechanism B, N · m E = total kinetic energy, J J = Jacobian matrix L 2 = maximum distance between antenna panels 2 and 3 during deployment, mm L 3 = distance between antenna panels 2 and 3 when deployed, mm L 4 = link length of the scissors mechanism, mm L 5 = distance between two endpoints of scissors mechanism when deployed, mm l i = lengths of links, mm antennas have received considerable attention in ocean observation, disaster monitoring, resource prospecting, forest inventory, and topographic mapping because of their all-weather and daylight independent capabilities [1,2]. Improving the Earth observation resolution is a significant developmental direction that can be accomplished through two methods.…”

“…Given that satellite power is limited, increasing the length of SAR antennas has become the most popular approach for increasing resolution, which can also significantly improve the width of observed image. To date, several deployable truss structures have been successfully applied in satellite SAR antennas to large-scale systems and low stowage volumes [3][4][5][6][7][8] (Table 1). The most advanced inorbit SAR system is Radarsat-2, of which the deployed length is 15 m and the best resolution is 3 m. However, the objective of this study is to design a deployable SAR antenna with its best resolution ranging from 0.3 to 1 m, which requires a 28 m SAR antenna array.…”