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A Method of Absolute Delay Calibration for Transponder Timing Receiver

A calibration method and receiver technology, applied in receiver monitoring, transmission monitoring, electrical components, etc., can solve the problems of high cost and complicated calibration process, and achieve the effects of low cost, simple operation and high precision

Active Publication Date: 2021-05-04
NAT TIME SERVICE CENT CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the absolute delay calibration of the receiving terminal of the transponder system still adopts the traditional method based on the signal simulator, which needs to be completed by purchasing a signal simulator of the corresponding frequency point. The calibration process is complicated and the cost is high.

Method used

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  • A Method of Absolute Delay Calibration for Transponder Timing Receiver
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  • A Method of Absolute Delay Calibration for Transponder Timing Receiver

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Embodiment Construction

[0019]The invention is further illustrated in connection with the accompanying drawings and examples, and the present invention includes, but is not limited to the following examples.

[0020]The present invention fully utilizes the time-frequency signal resource maintained by the navigation system ground master station, and the unique mode of operation of the forwarding system, and realizes the absolute delay of the forwarding timing receiver. The calibration process of the present invention is simple and the calibration accuracy is superior to a calibration method based on the signal analog source.

[0021]The technical solution used in the present invention to solve its technical problem includes the following steps:

[0022]Step 1: The ground master station of the forwarding system provides a 1-way CAPST 10MHz frequency signal, 1 channel Capst1pps time signal, and one outdoor coordinates precisely mapping antenna thumb;

[0023]Step 2: A 1st 10 MHz frequency signal and a 1PPS time signal in...

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Abstract

The invention provides a method for calibrating the absolute time delay of a repeating timing receiver, which utilizes the high-precision time and frequency signals kept by the ground master control station of the repeating system, and realizes the absolute time delay calibration of the repeating timing receiver by receiving air signals. Delay calibration, the calibration accuracy of this method is better than the signal source calibration method with tedious calibration process and high cost. This method is simple to operate and does not require additional auxiliary calibration equipment.

Description

Technical field[0001]The present invention relates to an absolute delay calibration method of a receiver.Background technique[0002]The absolute delay calibration of the receiver is a recognized puzzle. At present, the universal receiver absolute time extension method is a calibration method for signal analog sources, calibrating the antenna, antenna cable, and receiver units of the receiver terminal, and the hardships of calibration are antenna and receiver units. The calibration of the antenna needs to use the vector network analyzer measurement antenna in a specific microwave overchamber environment, and the measurement uncertainty is about 1 ns. The calibration of the receiver unit requires a secondary test device such as a high speed oscilloscope such as a high speed oscilloscope.figure 1 As shown, first, the simulator is self-calibrated, calibrated pseudo-distance zero value, then measure the phase relationship of the receiver external time-frequency reference signal on the rec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/21H04B17/364
CPCH04B17/21H04B17/364
Inventor 许龙霞朱峰李孝辉张慧君陈婧亚
Owner NAT TIME SERVICE CENT CHINESE ACAD OF SCI