設備時延是衛(wèi)星雙向時間頻率傳遞過程中的主要誤差源,對其進行校準是獲得高精度時間比對的關鍵。從衛(wèi)星雙向時間頻率傳遞的基本原理出發(fā),分析了基于移動參考站的衛(wèi)星雙向時間頻率傳遞鏈路設備時延校準的方法。工程實踐中,限于條件對校準方法進行了調(diào)整,實現(xiàn)了對兩站衛(wèi)星雙向時間比對鏈路設備時延的校準。%Device delay is the main error source in two-way satellite time and frequency transfer sys-tem. It is crucial to calibrate the delay in order to achieve highly accurate time comparison. According to the principle of two-way satellite time and frequency transfer, delay calibration based on portable station is introduced for two way satellite time frequency transfer system. In the engineering practice, due to the limit of reality, the method of calibration is modified, and the device delay of two-way satellite time and frequency transfer system is calibrated based on this method.
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