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Time frequency transmission receiver containing GNSS common view comparison algorithm

A technology of time-frequency transfer and time comparison, applied in the field of satellite orbit determination, can solve the problems of high cost of observation equipment, difficult to implement, complex algorithm, etc., and achieve the effect of easy implementation, high accuracy and improved accuracy.

Inactive Publication Date: 2018-05-18
HARBIN ENG UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

The full-view time comparison requires multiple receivers to observe multiple satellites at the same time, which also has high requirements for the receiver and the comparison algorithm; although the carrier phase method has high precision, the cost of observation equipment is relatively high, and The algorithm is complex and difficult to implement

Method used

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  • Time frequency transmission receiver containing GNSS common view comparison algorithm
  • Time frequency transmission receiver containing GNSS common view comparison algorithm
  • Time frequency transmission receiver containing GNSS common view comparison algorithm

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] The invention provides a time-frequency transfer receiver including a GNSS common-view time comparison algorithm, which belongs to the field of satellite navigation system receiver time comparison research, and specifically relates to satellite orbit determination, signal propagation delay correction and post-processing of data.

[0014] The present invention includes GNSS receiver hardware design, figure 1 Schematic diagram of common-view receiver.

[0015] The GNSS common-view receiver mainly includes four parts: a time-frequency unit, a radio frequency unit, a signal processing unit and a monitoring unit.

[0016] 1) Time-frequency unit

[0017] Generate the time-frequency signal required by the radio frequency unit and the signal processing unit, and output the PPS signal at the same time.

[0018] 2) RF unit

[0019] The radio frequency unit separates t...

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Abstract

The invention provides a time frequency transmission receiver containing a GNSS common view comparison algorithm, belongs to the field of satellite navigation system receiver time comparison and research, and specifically relates to receiver hardware design. The time frequency transmission receiver containing a GNSS common view comparison algorithm includes a time frequency unit, a radio frequencyunit, a signal processing unit, a monitoring unit, satellite orbit determination, signal propagation delay correction and post processing of data, wherein the common view comparison algorithm includes the steps: establishing a pseudo range observation equation, performing troposphere time delay correction value and earth rotation effect correction value modeling, and performing filtering and postprocessing on the time comparison result in real-time. The time frequency transmission receiver containing a GNSS common view comparison algorithm has the advantages of 1) being easy to implement, carrying out the common view time comparison algorithm, and being able to realize time comparison only by letting the measured receiver to observing one satellite at the same time; and 2) being higher in the accuracy of the time comparison algorithm adding Kalman filtering and RTS post processing, compared with a pure common view time comparison algorithm.

Description

technical field [0001] The invention belongs to the field of satellite navigation system receiver time comparison research, and specifically relates to satellite orbit determination, signal propagation delay correction and post-processing of data. Background technique [0002] In the context of continuous improvement of positioning and navigation accuracy, high-precision time synchronization has become a key technology in various GNSS satellite positioning and navigation systems, and is an important guarantee for positioning and navigation accuracy. The time comparison algorithm is the key to realize the time synchronization technology, and it is an important method to determine the time difference of different ground receivers. At present, the existing time comparison algorithms include time comparison of common view method, time comparison of full view method, time comparison of carrier phase method and other algorithms. Allan and Weiss et al. proposed a common-view time ...

Claims

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Application Information

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IPC IPC(8): G01S19/42G01S19/32
CPCG01S19/32G01S19/42
Inventor 程禹吴限德白文彬韩华田光远谢亚恩孙楚琦路胜卓陈卫东倪蜂棋
Owner HARBIN ENG UNIV
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