DocumentCode :
564365
Title :
Measurement of short-term frequency stability of controlled oscillators
Author :
Puranen, M. ; Eskelinen, P.
Author_Institution :
Metrol. Res. Inst., Helsinki Univ. of Technol., Espoo, Finland
fYear :
2006
fDate :
27-30 March 2006
Firstpage :
76
Lastpage :
79
Abstract :
A method for measuring the frequency of a controlled oscillator as a function of time is described. Sometimes it is necessary to detect and measure small but fast frequency changes. This method can also be used to measure frequency-hopping radio transmitters or radar pulses. In these cases suggested measurement tools, e.g. spectrum analyzers or frequency counters cannot be used. The performance of the system depends mostly on the multimeter, whose accuracy, noise and speed set the limits for the measurements. So far we have been able to measure frequency changes of 5 Hz with sampling speed of 100 000 s-1. The observed uncertainty is less than 2 Hz. With some further noise reduction better results are expected.
Keywords :
frequency measurement; frequency stability; oscillators; radio transmitters; controlled oscillators; frequency changes; frequency-hopping radio transmitters; measurement tools; radar pulses; short-term frequency stability; uncertainty; Frequency control; Frequency modulation; Oscillators; Time frequency analysis; Time measurement; Voltage measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Frequency and Time Forum (EFTF), 2006 20th European
Conference_Location :
Braunschweig
Print_ISBN :
978-1-4673-2642-1
Type :
conf
Filename :
6230949
Link To Document :
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