Time and frequency synchronization in multistatic radar. Consequences to usage of GPS disciplined references with and without GPS signals

Author

Johnsen, Terje

Author_Institution

Norwegian Defence Res. Establ., Kjeller, Norway

fYear

2002

fDate

2002

Firstpage

141

Lastpage

147

Abstract

The use of time and frequency references disciplined to GPS has been studied in the context of use in multistatic radar. Several reference units with civilian GPS receivers were tested. Differences in 1PPS fluctuations were observed that would result in ranging errors when stable GPS signals were received. If GPS signals were lost further control of reference output depends on the stability of the reference unit. Drift in frequency and corresponding time deviation were observed according to reference quality. The stable rubidium references were found to give reliable synchronization output for a long time without synchronization.

Keywords

Global Positioning System; radar detection; synchronisation; 1PPS fluctuations; GPS disciplined references; GPS signals; frequency references; frequency synchronization; multistatic radar; ranging errors; reference unit; time deviation; time references; time synchronization; Fluctuations; Frequency synchronization; Global Positioning System; Optical fiber cables; Oscillators; Satellite ground stations; Spaceborne radar; Stability; Testing; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Conference, 2002. Proceedings of the IEEE

Print_ISBN

0-7803-7357-X

Type

conf

DOI

10.1109/NRC.2002.999711

Filename

999711