【摘 要】
：
To meet the special requirement of full spectrum processing in deep space TT&C,a new efficient VLBI baseband converting method which can realize the processing of certain bandwidth without distortion
【机 构】
：
Academy Equipment China Academy Equipment
【出 处】
：
The International VLBI Service for Geodesy and Astrometry (I
论文部分内容阅读
To meet the special requirement of full spectrum processing in deep space TT&C,a new efficient VLBI baseband converting method which can realize the processing of certain bandwidth without distortion and dead zone is proposed.The method combines the efficient uniform channelization with the orthogonal mixing.By ingenious channelization and altering the coefficient of low-pass prototype filter,the processing of input signal analyzing bandwidth without distortion and dead zone in certain bandwidth is realized.Then with the flexibility of orthogonal mixing,wide-band and narrow-band single-sideband output schemes are designed.Furthermore,the center frequency of output signal can be changed arbitrarily and the bandwidth can be selected by different filter cascades.The simulation results show that full spectrum baseband conversion of analyzing bandwidth efficiently can be achieved with small resource consumption and high computational efficiency.
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