Target detection for wideband radar has recently received extensive attention. The classical energy integrating(EI)detector will always accumulate excess clutter or noise energy,which leads to unacceptable performance...Target detection for wideband radar has recently received extensive attention. The classical energy integrating(EI)detector will always accumulate excess clutter or noise energy,which leads to unacceptable performance deterioration if the detection window is not selected properly. In this paper, an EI detector for the distributed targets in the Gaussian environment is proposed.First, at the stage of preparatory work, the target models are proposed, then, the problem formulation is introduced. Subsequently,in the aspect of optimizing the method of detection window search and the method of threshold setting, the detailed design stages of the proposed detector are provided. Furthermore, theoretical analyses show that the proposed detector is easy to hardware implementation, and it does not need the prior knowledge about the spatial distribution of the target scattering centers in practical radar detection application. Finally, the performance assessment conducted by Monte Carlo simulations verifies that the proposed detector outperforms the conventional detectors.展开更多
In many areas of China Cirsium setosum is used as Cirsiumjaponicum DC. Although the two herbs have similar appearance and many similar compounds, they are totally different medicinal material, and have different pharm...In many areas of China Cirsium setosum is used as Cirsiumjaponicum DC. Although the two herbs have similar appearance and many similar compounds, they are totally different medicinal material, and have different pharmacodynamic actions. The fingerprint spectrum can be a good tool to distinguish the two herbs and control the quality of Cirsium japonicum DC. In this paper, the chemical fingerprint of Cirsiumjaponicum DC was established using raw materials from 15 origins in China. The chromatographic separations were obtained by a SHIM-PACK VP-ODS column （150 mm ~ 4.6 mm i.d., 5 ~tm） using gradient elution, and run time of 80 min. The peak of linarin was considered as the control peak. The experimental data were analyzed with the software of Similarity Evaluation System for Chromatographic Fingerprint of Traditional Chinese Medicine （Version 2004A） and the quality control system of both the overall qualitative similari- ties and the overall quantitative similarities of traditional Chinese medicine chromatographic fingerprints.展开更多
基金supported by the National Natural Science Foundation of China(61571043)and the 111 Project of China(B14010)
文摘Target detection for wideband radar has recently received extensive attention. The classical energy integrating(EI)detector will always accumulate excess clutter or noise energy,which leads to unacceptable performance deterioration if the detection window is not selected properly. In this paper, an EI detector for the distributed targets in the Gaussian environment is proposed.First, at the stage of preparatory work, the target models are proposed, then, the problem formulation is introduced. Subsequently,in the aspect of optimizing the method of detection window search and the method of threshold setting, the detailed design stages of the proposed detector are provided. Furthermore, theoretical analyses show that the proposed detector is easy to hardware implementation, and it does not need the prior knowledge about the spatial distribution of the target scattering centers in practical radar detection application. Finally, the performance assessment conducted by Monte Carlo simulations verifies that the proposed detector outperforms the conventional detectors.
基金supported by the Main Program of Autonomous Region College Scientific Research Program (XJEDU2008145)
文摘In many areas of China Cirsium setosum is used as Cirsiumjaponicum DC. Although the two herbs have similar appearance and many similar compounds, they are totally different medicinal material, and have different pharmacodynamic actions. The fingerprint spectrum can be a good tool to distinguish the two herbs and control the quality of Cirsium japonicum DC. In this paper, the chemical fingerprint of Cirsiumjaponicum DC was established using raw materials from 15 origins in China. The chromatographic separations were obtained by a SHIM-PACK VP-ODS column （150 mm ~ 4.6 mm i.d., 5 ~tm） using gradient elution, and run time of 80 min. The peak of linarin was considered as the control peak. The experimental data were analyzed with the software of Similarity Evaluation System for Chromatographic Fingerprint of Traditional Chinese Medicine （Version 2004A） and the quality control system of both the overall qualitative similari- ties and the overall quantitative similarities of traditional Chinese medicine chromatographic fingerprints.
