A simultaneous measurement method of multi-domain parameters for wideband signals based on Radon transform
The realistic operational environment for electronic monitoring equipment changes complicatedly,and multi-domain parameters,including the number of radiation sources,the working frequency,the working bandwidth,and the direction of arrival,are important for realizing real-time and accurate perception of working scene.A simultaneous measurement method of multi-domain parameters for wideband signals based on Radon transform is proposed,which is able to measure multi-domain major working parameters of multiple wideband sig-nals simultaneously and instantly,and improve the multi-domain and real-time perception ability of monitoring tar-get characteristics under low SNR condition distinctly.The method realizes the combined power focusing in the spatial and time domains of the whole detection frequency range and the whole detection angle range,and produc-es 2D spectrum amplitude diagram in the spatial and time domains,by combining digital channelized structure and cascade FFT.Based on the diagram,Radon transform is applied to compute linear integrations of different map-ping angles,and the multiple parameters of multiple targets in full scene are measured by set the suitable detec-tion threshold.The experiments show that the proposed method is able to promote parameter measurement accu-racy of weak signals and measure multi-domain major working parameters of multiple wideband signals simultane-ously.
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