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Based on the requirements of a machine tool which is used to measure and process aeronautic structural parts, a three-axis simultaneous control system with dual-CPU structure (Galil motion controller and industrial computer) is presented in this paper. The core of the system is the GALIL motion controller, and the human-machine interface, data processing and real-time monitoring functions are realized...
According to the problem of acquisition error for high dynamic direct sequence spread spectrum signals, a new compensation method is presented to guarantee acquisition phase accuracy of PN code. In this method, the acquisition result of Doppler frequency is used to compensate acquisition phase of PN code based on processing time of acquisition and start-up time of tracking. Analysis and simulation...
To solve the problem of function failure of space-borne spread spectrum transponder caused by single event upsets(SEUs), the anti-SEU design of signal processing machine of space-borne spread spectrum transponder is studied in this paper. The design adopts SRAM-based FPGAs, DSP and anti-fuse FPGA to achieve SEU hardening signal processing machine. The transponder using the method can avoid failure...
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