【摘 要】
：
A broadband instantaneous multi-frequency measurement system based on chirped pulse compression,which potentially has a sub-megahertz[MHz]accuracy and a hundred-gigahertz[GHz]measurement range,is demonstrated.A signal-under-test[SUT]is converted into a ca
【机 构】
：
Key Laboratory of Radar Imaging and Microwave Photonics,Ministry of Education,Nanjing University of
论文部分内容阅读
A broadband instantaneous multi-frequency measurement system based on chirped pulse compression,which potentially has a sub-megahertz[MHz]accuracy and a hundred-gigahertz[GHz]measurement range,is demonstrated.A signal-under-test[SUT]is converted into a carrier-suppressed double-sideband[CS-DSB]signal,which is then combined with an optical linearly frequency-modulated signal having the sweeping range covering the +1st-order sideband of the CS-DSB signal.With photodetection,low-pass filtering,and pulse compression,accurate frequencies of the SUT are obtained via locating the correlation peaks.In the experiment,single-and multi-frequency measurements with a measurement range from 3 to 18 GHz and a measurement accuracy of ＜±100 MHz are achieved.
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