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Space-ground time difference acquisition method and device, a storage medium and a processor

An acquisition method and technology of time difference, which is applied in the field of aerospace measurement and control, can solve problems such as inaccurate time difference between heaven and earth, achieve the effects of improving accuracy, solving inaccurate time difference between heaven and earth, and avoiding cumulative errors

Active Publication Date: 2021-10-29
中国人民解放军63920部队
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method, device, storage medium and processor for obtaining time difference between heaven and earth, so as to at least solve the problem of telemetry collected by spacecraft in the prior art The technical problem that the time difference between the sky and the earth calculated by the data is not accurate

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  • Space-ground time difference acquisition method and device, a storage medium and a processor
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  • Space-ground time difference acquisition method and device, a storage medium and a processor

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Embodiment 1

[0025] According to an embodiment of the present invention, an embodiment of a method for obtaining time difference between heaven and earth is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and, Although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0026] figure 1 It is the acquisition method of the time difference between the sky and the earth according to the embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0027] Step S102, acquiring the sampling period and downloading period of the telemetry data of the spacecraft, wherein the sampling period is the sampling time interval of the telemetry data, and the downloading period is the time interval for the spacecraft ...

Embodiment 2

[0082] According to an embodiment of the present invention, an embodiment of an acquisition device for time difference between heaven and earth is provided, Figure 4 is a schematic diagram of a device for obtaining time difference between heaven and earth according to an embodiment of the present invention, such as Figure 4 As shown, the device includes:

[0083] The period acquisition module 41 is used to obtain the sampling period and the downloading period of the telemetry data of the spacecraft, wherein the sampling period is the sampling time interval of the telemetry data, and the downloading period is the time interval at which the spacecraft will download the collected telemetry data; The determination module 42 is used to determine the target data frame according to the sampling period and the download period; the parameter acquisition module 43 is used to obtain the corresponding time parameter of the target data frame, wherein the time parameter includes the time ...

Embodiment 3

[0093] According to another aspect of the embodiments of the present invention, there is also provided a storage medium, including: the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute any one of the methods for acquiring the time difference between heaven and earth.

[0094] The storage medium is configured to store program codes for performing the following steps: acquiring the sampling period and the downloading period of the telemetry data of the spacecraft, wherein the sampling period is the sampling time interval of the telemetry data, and the downloading period is the sampling period that the spacecraft will collect The time interval for telemetry data downloading; determine the target data frame according to the sampling cycle and the downloading cycle; obtain the time parameters corresponding to the target data frame, where the time parameters include the time on the de...

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Abstract

The invention discloses a space-ground time difference acquisition method and device, a storage medium and a processor. The method comprises the steps that a sampling period and a downloading period of telemetry data of a spacecraft are acquired, the sampling period is a sampling time interval of the telemetry data, and the downloading period is a time interval when the spacecraft downloads the collected telemetry data; a target data frame is determined according to the sampling period and the downloading period; time parameters corresponding to the target data frame are obtained, the time parameters comprise on-board time, overground time and transmission time, the on-board time is the time when the spacecraft collects the telemetry data, the overground time is the time when the ground receives the telemetry data, and the transmission time is the time when the telemetry data is transmitted from the spacecraft to the ground; and obtaining the space-ground time difference according to the time parameters. The technical problem that in the prior art, the space-ground time difference calculated according to the telemetry data collected by the spacecraft is not accurate is solved.

Description

technical field [0001] The present invention relates to the technical field of aerospace measurement and control, in particular, to a method, device, storage medium and processor for obtaining time difference between heaven and earth. Background technique [0002] In the flight control of the spacecraft in orbit, in order to ensure the time synchronization between the spacecraft and the ground measurement and control system, it is necessary to calibrate the time on the spacecraft according to the ground time and the time difference between the sky and the ground (the time difference between the relative time of the spacecraft system and the time on the ground). , therefore, the telemetry data collected by the spacecraft should be used to calculate the time difference between the sky and the earth before calibration. [0003] At present, various control methods such as ground-based measurement and control and space-based measurement and control can be used for the flight cont...

Claims

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Application Information

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IPC IPC(8): H04J3/06H04B7/185
CPCH04J3/0644H04B7/18519
Inventor 高阳邹雪梅李亮胡国林温旭峰申聪聪雒玉宇邱冬阳蒋民纪彭德云胡晓东
Owner 中国人民解放军63920部队