NDLI: Study on Converter Path Delay Vary with Temperature in TWSTFT

Content Provider	IEEE Xplore Digital Library
Author	Zhang Hong Li Huanxin
Copyright Year	2011
Abstract	Up and Down-converters are the very important equipments in the Two Way Satellite Time and Frequency Transfer (TWSTFT). Up-converter is the transmit equipment while the Down-converter belong to receive facility. They take the role of changing from middle frequency signal (70MHz) to high frequency (up link is 14GHz, down link is 12GHz). In order to improve the time transfer precise, we measure and calculate the path delay of converter vary with the temperature. In this text, we replaced the satellite transponder by the Loop translator. We controlled the temperature around of the up and down-converter and did a TW loop experiment which transmit and receive by oneself. The temperature recorder wrote down the temperature value while the time interval counter recorded the path delay. Analyzing the relation between the path delay and temperature value, we found the following result: from 6 to 13 centigrade degree, the time delay is stable. That means during this temperature period, the time delay do not float obviously. So to reduce the effects by temperature, the best choice is keeping the temperature condition in 6 to 13 centigrade degree range. In the text, we compare the performance of time transfer with 6 to 13 centigrade degree and with other terms temperature range.
Starting Page	1
Ending Page	3
File Size	235926
Page Count	3
File Format	PDF
ISBN	9781424462506
ISSN	21619654
e-ISBN	9781424462520
DOI	10.1109/wicom.2011.6040268
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-23
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Temperature measurement Temperature distribution Satellites Delay effects Time frequency analysis Delay
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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