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In view of the existing problems of synchronous motor vector control system with mechanical sensor, sensor less motor control technology of synchronous motor is studied. A novel rotor position estimation method without mechanical sensor was suggested in this paper based on high-frequency signals injection into the rotor. With the structure of the(More)
Geometric configuration of imaging varies significantly over time in squinted synthetic aperture radar (SAR) when platform is under maneuvering flight. The classic resolution analysis in the traditional SAR is not suitable in this case. In order to illustrate a general description of the resolution characteristics of the system, a method of resolution(More)
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