{"title":"多路径环境中的Rcs测量","authors":"T. Moon, P.W. Taliana","doi":"10.1109/APMC.1992.672231","DOIUrl":null,"url":null,"abstract":"A straightforward and accurate method of calibrating field measurements of radar crosssection (RCS) is presented. Using a hand-held, square trihedral comer reflector camed onboard a helicopter it is possible to calibrate field measurements of RCS .against the known freespace value of the comer reflector to an accuracy of about fldB. INTRODUCTlON Radar cross-section (RCS) measurements of targets at aea are frequently subject to variations arising from interference between the radio frequency (RF) waves propagated over direct paths from the transmitter to the target and then back to the receiver, and those returning to the receiver after reflection(s) from the sea surface. Such multipath effects are most prominent under low sea state conditions and hamper the measurement of the free-space RCS needed for system analyses, simulation and mathematical modelling. Figure 1 illustrates the variations in a target's radar echo that can occur when the illuminating RF waves are propagated over a smooth sea surface.","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"68 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1992-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Rcs Measurements in Multipath Environments\",\"authors\":\"T. Moon, P.W. Taliana\",\"doi\":\"10.1109/APMC.1992.672231\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A straightforward and accurate method of calibrating field measurements of radar crosssection (RCS) is presented. Using a hand-held, square trihedral comer reflector camed onboard a helicopter it is possible to calibrate field measurements of RCS .against the known freespace value of the comer reflector to an accuracy of about fldB. INTRODUCTlON Radar cross-section (RCS) measurements of targets at aea are frequently subject to variations arising from interference between the radio frequency (RF) waves propagated over direct paths from the transmitter to the target and then back to the receiver, and those returning to the receiver after reflection(s) from the sea surface. Such multipath effects are most prominent under low sea state conditions and hamper the measurement of the free-space RCS needed for system analyses, simulation and mathematical modelling. Figure 1 illustrates the variations in a target's radar echo that can occur when the illuminating RF waves are propagated over a smooth sea surface.\",\"PeriodicalId\":234490,\"journal\":{\"name\":\"AMPC Asia-Pacific Microwave Conference,\",\"volume\":\"68 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1992-08-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"AMPC Asia-Pacific Microwave Conference,\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/APMC.1992.672231\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"AMPC Asia-Pacific Microwave Conference,","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APMC.1992.672231","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A straightforward and accurate method of calibrating field measurements of radar crosssection (RCS) is presented. Using a hand-held, square trihedral comer reflector camed onboard a helicopter it is possible to calibrate field measurements of RCS .against the known freespace value of the comer reflector to an accuracy of about fldB. INTRODUCTlON Radar cross-section (RCS) measurements of targets at aea are frequently subject to variations arising from interference between the radio frequency (RF) waves propagated over direct paths from the transmitter to the target and then back to the receiver, and those returning to the receiver after reflection(s) from the sea surface. Such multipath effects are most prominent under low sea state conditions and hamper the measurement of the free-space RCS needed for system analyses, simulation and mathematical modelling. Figure 1 illustrates the variations in a target's radar echo that can occur when the illuminating RF waves are propagated over a smooth sea surface.
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