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| Titel |
Potential radio frequency interference with the GPS L5 band for radio occultation measurements |
| VerfasserIn |
A. M. Wolff, D. M. Akos, S. Lo |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 7, no. 11 ; Nr. 7, no. 11 (2014-11-18), S.3801-3811 |
| Datensatznummer |
250115952
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| Publikation (Nr.) |
 copernicus.org/amt-7-3801-2014.pdf |
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| Zusammenfassung |
| Future radio occultation (RO) receivers are planned to utilize the newly
implemented Global Positioning System (GPS) L5 band centered at 1176.45 MHz.
Since there are currently no operational GPS L5 receivers used for
space-based RO applications, the interference environment is unclear.
Distance measuring equipment (DME) and tactical air navigation (TACAN)
stations share the same frequency band as GPS L5. The signals from these
stations have been identified as possible sources of interference for any GPS
L5 receiver, including those used in RO applications. This study utilizes
Systems Tools Kit (STK) simulations to gain insight into the power received
by a RO satellite in low Earth orbit (LEO) from a DME–TACAN transmission as
well as the amount of interfering stations. In order to confirm the validity
of utilizing STK for communication purposes, a theoretical scenario was
recreated as a simulation and the results were confirmed. Once the method was
validated, STK was used to output a received power level aboard a RO
satellite from a DME–TACAN station as well as a tool to detail the number of
interfering DME–TACAN stations witnessed by a space-based RO receiver over
time. The results indicated a large number of DME–TACAN stations transmitting
at similar orientations as a receiving RO satellite, thereby leading to the
possibility of signal degradation in an unclear interference environment. |
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