Pub Date : 1978-06-01DOI: 10.1109/ISEMC.1978.7566853
Robert L. Tuax
An "Ion Flood Fixture" was constructed to permit laboratory electrostatic charging of aerospace components and materials. The fixture provides a current source of positive or negative ions capable of flooding a test sample with electrostatic energy on a repeatable basis. The use of passive dischargers for the current source reduces radio freq uency noise generation and provides large currents at low potentials. The fixture includes an infinite impedance electrostatic voltmeter for measurement of stored poten tials. An antenna can be installed to obtain radio frequency noise measurements.
{"title":"Floods Can Be Beneficial","authors":"Robert L. Tuax","doi":"10.1109/ISEMC.1978.7566853","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566853","url":null,"abstract":"An \"Ion Flood Fixture\" was constructed to permit laboratory electrostatic charging of aerospace components and materials. The fixture provides a current source of positive or negative ions capable of flooding a test sample with electrostatic energy on a repeatable basis. The use of passive dischargers for the current source reduces radio freq uency noise generation and provides large currents at low potentials. The fixture includes an infinite impedance electrostatic voltmeter for measurement of stored poten tials. An antenna can be installed to obtain radio frequency noise measurements.","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130778003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1978-06-01DOI: 10.1109/ISEMC.1978.7566882
J. Herman
With the advent of the space age it has become im portant to extend our knowledge of the radio noise en vironment beyond the confines of the Earth itself. This review summarizes the characteristics of the near space electromagnetic ambient in terms of frequency, space and time variations, and identifies major sour ces. In the HF and lower bands where most noise and interference come from magnetospheric processes or ground-based natural (thunderstorms) and man-made (transmitter) sources, sufficient satellite and space craft data are available to describe the ambient in some detail. At VHF and UHF few in situ measurements exist, so several theoretical models have been attemp ted. Modeling approaches require assessment of frequ ency assignments (or preferably frequencies actually in use), transmitter powar outputs, antenna radiation patterns, geographic distributions of transmitters and source types (e.g., TV or FM broadcast stations, radar). These factors must be considered in relation to the re gion of space of interest. Model validations may be made partially by aircraft surveys, but more precisely by satellite or spacecraft measurements. The Space Shuttle/Spacelab vehicle will be particularly valuable for RF environment surveys.
{"title":"The Radio Noise Environment in Near Space: A Review","authors":"J. Herman","doi":"10.1109/ISEMC.1978.7566882","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566882","url":null,"abstract":"With the advent of the space age it has become im portant to extend our knowledge of the radio noise en vironment beyond the confines of the Earth itself. This review summarizes the characteristics of the near space electromagnetic ambient in terms of frequency, space and time variations, and identifies major sour ces. In the HF and lower bands where most noise and interference come from magnetospheric processes or ground-based natural (thunderstorms) and man-made (transmitter) sources, sufficient satellite and space craft data are available to describe the ambient in some detail. At VHF and UHF few in situ measurements exist, so several theoretical models have been attemp ted. Modeling approaches require assessment of frequ ency assignments (or preferably frequencies actually in use), transmitter powar outputs, antenna radiation patterns, geographic distributions of transmitters and source types (e.g., TV or FM broadcast stations, radar). These factors must be considered in relation to the re gion of space of interest. Model validations may be made partially by aircraft surveys, but more precisely by satellite or spacecraft measurements. The Space Shuttle/Spacelab vehicle will be particularly valuable for RF environment surveys.","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122177567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1978-06-01DOI: 10.1109/ISEMC.1978.7566852
R. E. Hartman, W. A. Kesselman
{"title":"TEM Transmission Line Technique for the Measurement of Radiated Susceptibility","authors":"R. E. Hartman, W. A. Kesselman","doi":"10.1109/ISEMC.1978.7566852","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566852","url":null,"abstract":"","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127924592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1978-06-01DOI: 10.1109/ISEMC.1978.7566848
L. A. Messer
{"title":"Applied EMC Control in a High Dynamic Range Environment","authors":"L. A. Messer","doi":"10.1109/ISEMC.1978.7566848","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566848","url":null,"abstract":"","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117039293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/ISEMC.1978.7566887
A. Whittlesey
Tests and analysis indicated the need to protect the Voyager spacecraft from electrostatic discharges in the Jupiter energetic charged particle environment. This paper describes the identified problem areas, the test and analysis methods and results, the resultant design changes, and the final assessment of the design changes and verification methods.
{"title":"Voyager Electrostatic Discharge Protection Program","authors":"A. Whittlesey","doi":"10.1109/ISEMC.1978.7566887","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566887","url":null,"abstract":"Tests and analysis indicated the need to protect the Voyager spacecraft from electrostatic discharges in the Jupiter energetic charged particle environment. This paper describes the identified problem areas, the test and analysis methods and results, the resultant design changes, and the final assessment of the design changes and verification methods.","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132786150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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