نتایج جستجو برای: phased array radar
تعداد نتایج: 172554 فیلتر نتایج به سال:
Robust quantitative estimates of land use and land cover change are necessary to develop policy solutions and interventions aimed towards sustainable land management. Here, we evaluated the combination of Landsat and L-band Synthetic Aperture Radar (SAR) data to estimate land use/cover change in the dynamic tropical landscape of Tanintharyi, southern Myanmar. We classified Landsat and L-band SA...
One of the novel ultrasonic phased array based scanning methods for ultrasonic imaging in non-destructive test is total focusing method (TFM). This method employs maximum available information of the phased array elements and leads to an improved defect detection accuracy compared to conventional scanning methods. Despite its high detection accuracy, TFM behaves weak in distinguishing the real ...
The U.S. Government operates seven distinct radar networks providing weather and aircraft surveillance for public weather services, air traffic control, and homeland defense. A next-generation, multifunction phased array radar (MPAR) concept has been proposed that could provide enhanced weather and aircraft surveillance services with potentially lower life-cycle costs than multiple single-funct...
Systems that can operate over wide frequency ranges with agile beam scanning and frequency hopping are receiving increased attention due to recent trends within communication, radar and EW applications. In addition to requiring wideband apertures, T/R modules, beamforming and beam shaping, a wideband multifunction antenna system must also be able to instantaneously reconfigure the array to the ...
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