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Enhanced Iron-Tunnel Recognition for Automotive Radars
Lee, Jae-Eun,Lim, Hae-Seung,Jeong, Seong-Hee,Kim, Seong-Cheol,Shin, Hyun-Chool IEEE 2016 IEEE Transactions on Vehicular Technology VT Vol.65 No.6
<P>In this paper, we propose a novel iron-tunnel recognition method to overcome the deterioration of the target or vehicle detection performance due to iron-tunnel clutters. Although a few studies on the reflection and diffraction on road surfaces have been conducted for automotive radar sensors, most of these studies did not consider the situation in which structures with larger reflection, such as an iron tunnel, are densely distributed. The proposed method measures the degree of spectral spreading through the analysis of the spectrum characteristics of the received radar signal under different road conditions. The proposed method can successfully detect iron tunnels. In addition, experimental results show that early detection and missing problem of a forward target vehicle in an iron tunnel under adaptive cruise control ( ACC) is improved.</P>
Jo, Seong Bin,Chae, Ho Jin,Kim, Tae Young,Lee, Chul Ho,Oh, Ji Un,Kang, Suk-Hwan,Kim, Joon Woo,Jeong, Moon,Lee, Soo Chool,Kim, Jae Chang Elsevier 2018 CATALYSIS COMMUNICATIONS - Vol.117 No.-
<P><B>Abstract</B></P> <P>Synthetic natural gas (SNG) from syngas is considered a promising substitute for fossil fuels because of its environmental advantages; however, its heating value is below the standard heating value (especially in South Korea and Japan). In this study, bimetallic Co-Fe catalysts were developed for the production of C<SUB>2</SUB>-C<SUB>4</SUB> hydrocarbons for usage as mixing gases to improve the heating value of SNG. The effect of the process conditions on the catalytic behavior was investigated. Catalyst 5Co-15Fe/γ-Al<SUB>2</SUB>O<SUB>3</SUB> showed the best results with 91.2% CO conversion, 28.2% C<SUB>2</SUB>-C<SUB>4</SUB> selectivity, and 0.98 paraffin ratio at H<SUB>2</SUB>/CO = 3.0 and 300 °C.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Reduction temperature of iron in bimetallic catalysts shifts to lower temperatures. </LI> <LI> Reaction temperature and H<SUB>2</SUB>/CO ratio has influence on catalytic performance. </LI> <LI> Paraffin ratio increases with the increase of CO conversion. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>