Embedded Systems In The Relevant Processor

As a radio astronomical observation technology with very high spaceresolution, Very Long Baseline Interferometry(VLBI) has been widelyused in the high accuracy deep space probe tracking activities. Thecorrelator is the key data-preprocessing device. With the rapiddevelopment of embedded system implemented on FPGA platform, FPGA andembedded system based hardware corelator become the highlight of theVLBI technology and have a dramatic progress. Recently, rapidlyprogressing e-VLBI uses DBBC as the terminal to record data, and usesinternet to pass the data to the correlator processor at the dataprocessing center. The pretreated data can then be sent to otherdepartment through giga-bit network.In the thesis, how to implement an embedded giga-bit network systemusing FPGA is introduced. And how to use this system in hardwarecorrelator is also dissertated in detail. This not only improves thecollection and transmission of LTA data, but also shorts the time forpost-processing. This way of implementation is the first time of itskind in domestic correlator study.