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Beidou short message common-view data compression and transmission method

A Beidou short message and data compression technology, which is applied in the transmission system, satellite radio beacon positioning system, measurement device, etc., can solve the problems of unable to complete common-view data transmission and limited channel capacity, and achieve rapid and continuous common-view data The effect of transmission

Active Publication Date: 2017-05-03
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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Problems solved by technology

[0006] The purpose of the present invention is to provide a common-view data compression transmission method for Beidou short messages, which solves the problem that all common-view data transmission cannot be completed due to limited channel capacity when using Beidou short messages for common-view data transmission

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  • Beidou short message common-view data compression and transmission method

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Embodiment Construction

[0024] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0025] The Beidou short message common view data compression transmission method provided in this embodiment takes into account the parameters indispensable for time transfer in the GPS common view method standard data format GGTTS and the Beidou short message communication capacity, which can realize rapid continuous common view data transmission.

[0026] The Beidou short message common-view data compression transmission method provided in this embodiment includes the following steps:

[0027] Compress and encode the co...

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Abstract

The invention discloses a Beidou short message common-view data compression and transmission method, which comprises the steps of performing compression coding on Beidou short message common-view data, and generating message content; and transmitting the message content, wherein the message content comprises a data head, the time difference number, the coordinated universal time of each satellite corresponding to the system time difference, an ms portion of an average value of local and GPS system time differences, an ms portion of an average value of local and BD system time differences, a 0.1ns portion of the local and system time difference calculated according to each satellite observation quantity and a check bit. Quick and continuous common-view data transmission can be realized according to the method disclosed by the invention.

Description

technical field [0001] The invention relates to a common-view data compression transmission method. More specifically, it relates to a Beidou short message common-view data compression transmission method. Background technique [0002] Common viewing is currently the most mature high-precision remote time-frequency transmission technology. This method uses GNSS satellites as the medium. Two time-frequency laboratories that are far apart observe the same GNSS satellite at the same time. The clock time is used as a common reference source for the two to measure the time difference between the laboratory clock and the satellite clock. After data exchange, the observation results of the two laboratories are compared, and finally the time deviation of the two laboratories is obtained, thereby realizing remote time and frequency transmission. . This method effectively eliminates the influence of satellite clock error and weakens the influence of satellite orbit error and atmosph...

Claims

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Application Information

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IPC IPC(8): G01S19/35H04L29/06
CPCG01S19/35H04L69/04
Inventor 易航张升康王宏博王海峰
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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