JOURNAL OF ASTRONAUTIC METROLOGY AND MEASUREMENT ›› 2014, Vol. 34 ›› Issue (5): 23-26.doi: 10.12060/j.issn.1000-7202.2014.05.06

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The Progress of BIRMM Two-Way Satellite Time and Frequency Transfer Modem

WANG Xue-yun1；ZHAO Bo2；ZHANG Sheng-kang1,3；WANG Hai-feng1,3；YUAN Yuan1；WANG Hong-bo1,3   

  1. 1、Beijing Institute of Radio Metrology and Measurement, Beijing 100039;
    2、Surveying,Mapping and Navigation Bureau of the PLA Headquarts of General Staff, Beijing 100081；
    3、Science and Technology on Metrology and Calibration Laboratory, Beijing 100039
  • Online:2014-10-15 Published:2014-10-15

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Abstract: The modem is the key equipment in two-way satellite time transfer (TWSTT).In this paper,the new progress of BIRMM TWSTFT modem is introduced. The modem has flexible configuration with multi chip-rate such as 1Mchip/s,2.5Mchip/s and 5Mchip/s and the receiver could expand to 10 channels in one module,the IF frequency is 70MHz. Referring to the test of local twoway satellite comparison,the BIRMM modem performance has been analyzed and evaluated.The test results show that,the precision of BIRMM modem within 0.3 ns.

Key words: Modem, TWSTFT, +Local two-way satellite time comparison test

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