A Novel Technique for Precise Phase and Frequency Measurement

被引：0

作者：

Acharya, Aishik ^{[1
,2
]}

Arora, Poonam ^{[1
]}

Yadav, Shuchi ^{[1
]}

Sen Gupta, Amitava ^{[1
,3
]}

机构：

[1] Natl Phys Lab, CSIR, Div Time & Frequency, Dr KS Krishnan Marg, New Delhi 110012, India

[2] Acedamy Council Sci & Innovat Res, CSIR Rd, Madras 600113, Tamil Nadu, India

[3] Northcap Univ, Sect 23A, Gurgaon 122017, India

来源：

2016 URSI ASIA-PACIFIC RADIO SCIENCE CONFERENCE (URSI AP-RASC) | 2016年

关键词：

DMTD; Subsampling; ADC; DAQ; DDS;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel technique for precise phase and frequency measurement is described in this paper. A primary frequency standard, namely, Cs atomic fountain has already been developed at CSIR-NPL. Six commercial Cs atomic beam clocks along with a H-Maser are continuously inter-compared and constitute a stable time scale. H-Maser frequency is being evaluated with respect to the Cs fountain on regular basis. For evaluating the frequencies of these different frequency sources precisely, a stable, low noise and very accurate frequency measurement instrument is required. All digital implementation of dual mixer time difference technique is a step towards more precise measurement and evaluation of frequencies and will provide better stability to the timescale.

引用

页码：978 / 979

页数：2

共 6 条

[1]

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[2]

[Anonymous], 1998, US HDB QUARTZL INSTR

[3]

[Anonymous], 2001, TSC 5110A TIM INT AN

[4] SOME ASPECTS OF THEORY AND MEASUREMENT OF FREQUENCY FLUCTUATIONS IN FREQUENCY STANDARDS [J].

CUTLER, LS ;

SEARLE, CL .

PROCEEDINGS OF THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, 1966, 54 (02) :136-&

[5]

Riimisch S., 41 ANN PREC TIM TIM

[6]

Sojdr L., P 2003 IEEE INT FREQ

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