| 1. Identity statement | |
| Reference Type | Slides (Audiovisual Material) |
| Site | mtc-m16c.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 8JMKD3MGP8W/34B7FGL |
| Repository | sid.inpe.br/mtc-m18@80/2008/12.02.20.06 (restricted access) |
| Last Update | 2008:12.02.20.06.24 (UTC) seeger05 |
| Metadata Repository | sid.inpe.br/mtc-m18@80/2008/12.02.20.06.26 |
| Metadata Last Update | 2018:06.04.04.05.47 (UTC) administrator |
| Secondary Key | INPE--MAO/ |
| Citation Key | RosaSchuAntuGome:2008:RaQuSi |
| Title | Radio quite site qualification for the Brasilian Southern Space Observatory by monitoring the low frequency 10–240 MHz Eletromagnetic Spectrum  |
| Format | On-line |
| Year | 2008 |
| Access Date | 2024, Apr. 28 |
| Number of Files | 1 |
| Size | 3232 KiB |
| 2. Context | |
| Author | 1 Rosa, Guilherme Simon da 2 Schuch, Nelson Jorge 3 Antunes, Cassio Espindola 4 Gomes, Natanael Rodrigues |
| Group | 1 RSU-CIE-INPE-MCT-BR 2 RSU-CIE-INPE-MCT-BR 3 RSU-CIE-INPE-MCT-BR |
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) 4 Universidade Federal de Santa Maria-UFSM |
| Conference Name | Scientific Assembly of COSPAR, (37Th). |
| Conference Location | Montreal, Canada |
| Date | 18-25, July |
| Publisher | Instituto Nacional de Pesquisas Espaciais |
| Publisher City | São José dos Campos |
| History (UTC) | 2008-12-03 19:56:40 :: seeger05 -> administrator :: 2018-06-04 04:05:47 :: administrator -> seeger05 :: |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Keywords | Electromagnetic Spectrum radio interference spectrum analysis site quality for Radio |
| Abstract | The monitoring of the level of the radio interference in the Site of the Southern Space Observatory - SSO/CRS/INPE - MCT, (29S, 53W), São Martinho da Serra, RS, in south of Brazil, aims to gather spectral data for the Observatorys Site qualification as a radio quite site for installation of Radio Astronomy instrumentation, free of radio noise. The determination of the radio interference level is being conducted by using a spectrum analyzer and Omni directional antennas remotely controlled through a GPIB interface, via IEEE 488 bus, and programs written in C language. That procedure allows the scanning of the Electromagnetic Spectrum power over the examined frequency range from 10 - 240MHz. The methodology for these tests was to amplify the radio signal from the antenna by a block amplifier. Subsequently, the received signals are evaluated by the spectrum analyzer. A dedicated PC computer is used for the control and data acquisition, with the developed software. The data are instantly stored in digital format and remotely transferred via VNC software from the SSO Observatory Site to the Radio Frequency and Telecommunication Laboratory at the Southern Regional Space Research Center - CRS/CIE/INPE - MCT, in Santa Maria, RS, for analysis and storage on the radio interference data base for long period. It is compared the SSOs Electromagnetic Spectrum data obtained since thebeginning of the 1990s decade, before the Site constructions, with the current observed data. Some radio transmissions were found in the observed frequency range due to some local FMs, mostly between 93.5 MHz to 105.7 MHz, which were observed in previous monitoring. A good evidence of the site quality is the fact that the power of the Electromagnetic Spectrum is much lower than that measured at the Radio Frequency and Telecommunication Laboratory, in Santa Maria, RS, where the signals do not exceed -60 dB. On the Site of the SSO, due to the low power observed, weak radio signals can only be received by using good quality amplifiers. Therefore, for Radio Astronomy observations the data comparison and analysis between different frequency bands, for several periods of data acquisition, revealed that the Brazilian Southern Space Observatory is still free from any significant electromagnetic radio interference and is qualified for installation of sensitive radio instrumentation. |
| Area | CEA |
| Arrangement | Radio quite site... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | COSPAR 2008 E110-0007-08 Guilherme Simon da Rosa Presentation LR 514C 14-07-2008 12 25.ppt |
| User Group | seeger05 |
| Visibility | shown |
| Read Permission | deny from all and allow from 150.163 |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3EUFCFP |
| Host Collection | sid.inpe.br/mtc-m18@80/2008/03.17.15.17 |
| 6. Notes | |
| Empty Fields | archivingpolicy archivist booktitle callnumber contenttype copyholder copyright creatorhistory descriptionlevel dissemination documentstage doi e-mailaddress electronicmailaddress isbn issn label lineage mark mirrorrepository nextedition notes numberofslides orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark secondarytype session shorttitle sponsor subject tertiarymark tertiarytype type url versiontype volume |
| 7. Description control | |
| e-Mail (login) | seeger05 |
| update | |