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Method for satellite-ground timing with oscilloscope

An oscilloscope and satellite-based technology, applied in the field of space exploration, can solve problems such as the inability of clocks to be synchronized

Inactive Publication Date: 2015-04-15
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

[0003] But in practice, the digital tube clock on the satellite cannot be synchronized with the ground clock, so it is necessary to adjust the time of the satellite; the time adjustment method generally adopts centralized time adjustment, and the centralized time adjustment refers to adjusting the time on the satellite at a specific moment to make it coincides with the ground time at the current moment

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  • Method for satellite-ground timing with oscilloscope
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  • Method for satellite-ground timing with oscilloscope

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Embodiment Construction

[0030] In order to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] The invention provides a method for using an oscilloscope to correct the satellite-ground time. According to the measurement method, the system error can be overcome, and the satellite-ground time difference can be obtained accurately. The clock is kept in sync with the ground clock.

[0032] First of all, according to figure 2 For specific analysis:

[0033] Concrete steps of the present invention are:

[0034] Step 1: When the digital tube computer on the star generates the leading edge of the first bit of the downlink telemetry frame synchronization header EB90(H), obtain the current on-board time t 星 , encode that time into the current telemetry frame;

[0035] Step 2: Perform pulse encoding on the telemetry frame containing the time code in...

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Abstract

The invention provides a method for satellite-ground timing with an oscilloscope. According to the method, the oscilloscope is used for carrying out a ground experiment to obtain satellite-ground time delay delta T satellite-ground time delay, accurate satellite-ground time difference is then calculated, and satellite timing is then carried out according to the measured satellite-ground time difference to enable an on-satellite data management clock to be synchronous with a ground clock.

Description

technical field [0001] The invention relates to the technical field of space detection, in particular to a method for using an oscilloscope to correct satellite-earth time. Background technique [0002] China's satellite project started from the development of sounding rockets, and then concentrated on the development of artificial satellites, focusing on the development of various application satellites; different types of artificial satellites and the first Shenzhou experimental spacecraft; since then, my country has launched the Chang'e series of satellites, which has made my country's space industry a big step forward; [0003] But in practice, the digital tube clock on the satellite cannot be synchronized with the ground clock, so it is necessary to adjust the time of the satellite; the time adjustment method generally adopts centralized time adjustment, and the centralized time adjustment refers to adjusting the time on the satellite at a specific moment to make it coi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G04R20/04G04R20/06
Inventor 景争艳刘奇张静权爽
Owner BEIJING INST OF SPACECRAFT SYST ENG