{"title":"激光测高仪与伪随机码调制云高测量","authors":"Krzysztof Holejko, R. Nowak","doi":"10.1117/12.438429","DOIUrl":null,"url":null,"abstract":"This paper present a CW low power ceilometer designed for cloud base high measurements. The 500mW CW IR laser of the ceilometer is modulated by a pseudo noise sequence. The scattered and delayed light signal is received by a correlation system with output bandwidth of only 3,5 Hz. This enables to obtain the ranges of 1.2 km to the clouds and the accuracy of the order of +/- 2.5 m to the solid objects. The following issues are discussed: principle of operation, deice architecture and error estimation. Some measurement results are also enclosed.","PeriodicalId":156625,"journal":{"name":"Systems of Optical Security","volume":"86 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2001-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Laser ceilometer with pseudo random code modulation for cloud high measurements\",\"authors\":\"Krzysztof Holejko, R. Nowak\",\"doi\":\"10.1117/12.438429\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper present a CW low power ceilometer designed for cloud base high measurements. The 500mW CW IR laser of the ceilometer is modulated by a pseudo noise sequence. The scattered and delayed light signal is received by a correlation system with output bandwidth of only 3,5 Hz. This enables to obtain the ranges of 1.2 km to the clouds and the accuracy of the order of +/- 2.5 m to the solid objects. The following issues are discussed: principle of operation, deice architecture and error estimation. Some measurement results are also enclosed.\",\"PeriodicalId\":156625,\"journal\":{\"name\":\"Systems of Optical Security\",\"volume\":\"86 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-08-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Systems of Optical Security\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1117/12.438429\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Systems of Optical Security","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1117/12.438429","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Laser ceilometer with pseudo random code modulation for cloud high measurements
This paper present a CW low power ceilometer designed for cloud base high measurements. The 500mW CW IR laser of the ceilometer is modulated by a pseudo noise sequence. The scattered and delayed light signal is received by a correlation system with output bandwidth of only 3,5 Hz. This enables to obtain the ranges of 1.2 km to the clouds and the accuracy of the order of +/- 2.5 m to the solid objects. The following issues are discussed: principle of operation, deice architecture and error estimation. Some measurement results are also enclosed.
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