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Pulsed power research for military and civil applications has been conducted at the China Academy of Engineering Physics (CAEP) for more than 50 years. The pulsed power research activities include development of pulsed power components, such as different kinds of high-voltage switches, series of pulsed power sources and pulsed X-ray machines, high-current accelerators for $Z$ -pinch and flash X-ray...
In this paper, the two invariants in the perspective projection model of camera imaging process are analyzed and a five-point constraint is put forward. And then methods of determining the true projective position of the circular target using a concentric circular target, and an optimal method of suppressing stochastic errors in the location of circle centers with the optimization object function...
In this paper, a new method is presented to design robust low-sidelobe wideband constant beamwidth beamformer in time domain, which alleviates the effect caused by array mismatch errors and get lowly sidelobe level. Results of computer simulations for a twelve-element array demonstrate satisfactory performance of the proposed approach.
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