On-satellite autonomous playback method of satellite digital transmission X delay link data

Abstract

The invention relates to an on-satellite autonomous playback method of satellite digital transmission X delay link data. The method comprises the following steps: S1, calculating whether a satellite passes through a criterion latitude line; S2, judging whether digital transmission program control is allowed; S3, judging whether playback is performed on a present orbit of the satellite at the criterion latitude, and setting ground station playback parameters; S4, judging whether playback is performed on the present orbit of the satellite; S5, calculating a played back ground station record andcount at a current moment t; and S6, preforming delay data playback control. The on-satellite autonomous playback method provided by the invention has the characteristics that the on-satellite independent playback judgment is simple and is easy to implement, the on-satellite adjustment with high degrees of freedom of the satellite playback ground station parameters, satellite data playback areas,continuous playback orbit numbers and other parameters is achieved, and the special situation in which the interval between the playback areas is discontinuous in a satellite playback process can be handled.

Description

technical field [0001] The invention relates to a method for autonomous playback of digital transmission data in the technical field of satellite satellite affairs software, in particular to a method for autonomous playback of satellite data transmission X-delay link data on a satellite. Background technique [0002] In the method of satellite data transmission data transmission and playback to the ground, it is mainly divided into the following methods: [0003] The first method mainly relies on the real-time remote control command sent by the ground after the satellite enters the country to control the on-off operation of each stand-alone data transmission unit on the satellite for the ground playback of the data transmission data. The disadvantage of this method is that each playback data needs to be sent by the relevant ground unit. participate; [0004] The second method mainly relies on the on-board program-controlled operation table on the ground to carry out on-sate...

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Problems solved by technology

[0003] The first method mainly relies on the real-time remote control command sent by the ground after the satellite enters the country to control the on-off operation of each stand-alone data transmission unit on the satellite to perform the ground playback of the data transmission data. The disadvantage of this method is that each playback data requires the relevant ground unit to send instructions participate;

[0004] The second method mainly relies on the on-board program-controlled operation table on the ground to carry out the on-off and off operations of each stand-alone digital transmission timed on the star for the ground playback of the data transmission data. The disadvantage of this method is that the on-off and playback operations still need Relevant units on the ground calculate and complete the replay time in advance and send instructions to participate;

[0005] The third method mainly relies on the on-board program-controlled software to independently judge according to the playback requirements and conditions and to switch on and off the digital transmission units, so as to complete the ground playback of the digital transmission data independently. The advantage of this method is that it realizes ground-free Fully autonomous playback with the participation of units, but in the design of most satellite program control software, there are still shortcomings such as complex judgment conditions in the autonomous playback method, small degree of freedom in control and adjustment between the ground station and the playback area, and inability to deal with special adjacent playback areas.

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