First reflectivity results with a portable 92 GHz radar
A portable, battery-powered 92 GHz pulse radar has been constructed for field measuring purposes. The device utilizes two Gunn oscillators operating at a frequency difference suitable for downconversion. It has 20 mW of transmit power, a dynamic range of 50 dB and the antenna gain is 40 dBi. The pul...
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| creator | Eskelinen, Pekka Peltonen, Jouni Ylinen, Juhana |
| description | A portable, battery-powered 92 GHz pulse radar has been constructed for field measuring purposes. The device utilizes two Gunn oscillators operating at a frequency difference suitable for downconversion. It has 20 mW of transmit power, a dynamic range of 50 dB and the antenna gain is 40 dBi. The pulse width is 100 ns and the radar includes a fast sample and hold module suitable for long term reflectivity recordings at selected distance. Total equipment weight is 2 kg without 12 V/5 Ah battery. Examples of first measurements are shown. RCS calibration uncertainty at 50 percent level is ±1.5 dB. Observed tree reflectivities partly exceed those extrapolated from previously published results giving typical levels of 0 to 5 dB(m 2 /m 2 ) both for coniferous and deciduous samples and a data spread of ±6 dB. |
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The device utilizes two Gunn oscillators operating at a frequency difference suitable for downconversion. It has 20 mW of transmit power, a dynamic range of 50 dB and the antenna gain is 40 dBi. The pulse width is 100 ns and the radar includes a fast sample and hold module suitable for long term reflectivity recordings at selected distance. Total equipment weight is 2 kg without 12 V/5 Ah battery. Examples of first measurements are shown. RCS calibration uncertainty at 50 percent level is ±1.5 dB. 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The device utilizes two Gunn oscillators operating at a frequency difference suitable for downconversion. It has 20 mW of transmit power, a dynamic range of 50 dB and the antenna gain is 40 dBi. The pulse width is 100 ns and the radar includes a fast sample and hold module suitable for long term reflectivity recordings at selected distance. Total equipment weight is 2 kg without 12 V/5 Ah battery. Examples of first measurements are shown. RCS calibration uncertainty at 50 percent level is ±1.5 dB. Observed tree reflectivities partly exceed those extrapolated from previously published results giving typical levels of 0 to 5 dB(m 2 /m 2 ) both for coniferous and deciduous samples and a data spread of ±6 dB.</description><subject>Antenna measurements</subject><subject>Lighting</subject><subject>Radar antennas</subject><subject>Radar cross-sections</subject><subject>Reflectivity</subject><subject>Vegetation</subject><issn>2155-5745</issn><issn>2155-5753</issn><isbn>9781467348218</isbn><isbn>146734821X</isbn><isbn>395404224X</isbn><isbn>9783954042241</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2013</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNo9jMtKAzEUQOMLbOt8gZv8wEByb24eSym2FQpuFLormSSDkRFLEpX69QpKV4fDgXPG5uhICQWgdudsBpKoJ0N4wTpnrFTaoLIg7eWpKbpmXa2vQggJVoN1M2ZWudTGSxqnFFr-zO34K_VjapV_5fbCPT-8l-aHKXEHfL355sVHX27Y1einmrp_Ltjz6v5puem3j-uH5d22z9JQ6w2gQBnBKme9iQ5jCEGPItoE4LTDASkOSlIClCr4mIRDHdEp7x0EwAW7_fvmlNL-UPKbL8e9JiuFJfwB1fFEjg</recordid><startdate>201306</startdate><enddate>201306</enddate><creator>Eskelinen, Pekka</creator><creator>Peltonen, Jouni</creator><creator>Ylinen, Juhana</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>201306</creationdate><title>First reflectivity results with a portable 92 GHz radar</title><author>Eskelinen, Pekka ; Peltonen, Jouni ; Ylinen, Juhana</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i175t-723031d28498a7d93dccc6f0d8e229693b35db415e2314cade0936d394aa92c23</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Antenna measurements</topic><topic>Lighting</topic><topic>Radar antennas</topic><topic>Radar cross-sections</topic><topic>Reflectivity</topic><topic>Vegetation</topic><toplevel>online_resources</toplevel><creatorcontrib>Eskelinen, Pekka</creatorcontrib><creatorcontrib>Peltonen, Jouni</creatorcontrib><creatorcontrib>Ylinen, Juhana</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Eskelinen, Pekka</au><au>Peltonen, Jouni</au><au>Ylinen, Juhana</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>First reflectivity results with a portable 92 GHz radar</atitle><btitle>2013 14th International Radar Symposium (IRS)</btitle><stitle>IRS</stitle><date>2013-06</date><risdate>2013</risdate><volume>1</volume><spage>190</spage><epage>195</epage><pages>190-195</pages><issn>2155-5745</issn><eissn>2155-5753</eissn><isbn>9781467348218</isbn><isbn>146734821X</isbn><eisbn>395404224X</eisbn><eisbn>9783954042241</eisbn><abstract>A portable, battery-powered 92 GHz pulse radar has been constructed for field measuring purposes. The device utilizes two Gunn oscillators operating at a frequency difference suitable for downconversion. It has 20 mW of transmit power, a dynamic range of 50 dB and the antenna gain is 40 dBi. The pulse width is 100 ns and the radar includes a fast sample and hold module suitable for long term reflectivity recordings at selected distance. Total equipment weight is 2 kg without 12 V/5 Ah battery. Examples of first measurements are shown. RCS calibration uncertainty at 50 percent level is ±1.5 dB. Observed tree reflectivities partly exceed those extrapolated from previously published results giving typical levels of 0 to 5 dB(m 2 /m 2 ) both for coniferous and deciduous samples and a data spread of ±6 dB.</abstract><pub>IEEE</pub><tpages>6</tpages></addata></record> |
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| ispartof | 2013 14th International Radar Symposium (IRS), 2013, Vol.1, p.190-195 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Antenna measurements Lighting Radar antennas Radar cross-sections Reflectivity Vegetation |
| title | First reflectivity results with a portable 92 GHz radar |
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