LEADER 01887nam 2200349 450 001 996280520903316 005 20231207080943.0 010 $a0-7381-4329-4 024 7 $a10.1109/IEEESTD.1989.82404 035 $a(CKB)3780000000089990 035 $a(NjHacI)993780000000089990 035 $a(EXLCZ)993780000000089990 100 $a20231207d1989 uy 0 101 0 $aeng 135 $aur||||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aIEEE Std 1139-1988 $eIEEE Standard Definitions of Physical Quantities for Fundamental Frequency and Time Metrology /$fInstitute of Electrical and Electronics Engineers 210 1$a[Place of publication not identified] :$cIEEE,$d1989. 215 $a1 online resource 330 $aThis standard covers the fundamental metrology for describing physical quantities of importance to frequency and time metrology. Quantities covered are frequency instability, phase instability, spectral densities, time instability variances, time prediction, and confidence limits when estimating the variance from a finite data set. In addition, recommendations are made for the reporting of measurements of frequency and phase instabilities, especially regarding the recording of experimental parameters, experimental conditions and calculation techniques. This standard also covers translation between the frequency domain and time domain terminology and provides an extensive bibliography of the relevant literature. 517 $aIEEE Std 1139-1988: IEEE Standard Definitions of Physical Quantities for Fundamental Frequency and Time Metrology 606 $aTime measurements 615 0$aTime measurements. 676 $a529.7 801 0$bNjHacI 801 1$bNjHacl 906 $aDOCUMENT 912 $a996280520903316 996 $aIEEE Std 1139-1988$92576486 997 $aUNISA