Automatic satellite time management system

A technology of time management and configuration management, applied in the direction of program startup/switching, electronic digital data processing, resource allocation, etc., can solve the problems of reliability, precision, low degree of automation, high degree of dependence, large punctuality error, etc., to achieve Avoid low reliability and precision, improve reliability, and reduce timing error

Active Publication Date: 2020-09-04
HARBIN INST OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the traditional on-board time management system is highly dependent on the CPU, resulting in large punc

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0046] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0047] see figure 1 Describe this embodiment, a kind of automatic on-board time management system described in this embodiment, on-board time management system is realized based on FPGA, the function of on-board time management system includes four kinds of operation modes and two kinds of operat...

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Abstract

The invention discloses an automatic satellite time management system, and belongs to the field of satellite time management. The problems that a traditional satellite time management system is high in dependence on a CPU, large punctuality errors are caused, and the reliability and precision automation degree is low are solved. The system comprises four operation modes, namely a general time management mode, an instruction uniform timing mode, a second pulse uniform timing mode and a navigation autonomous timing module. The ground timing and ground centralized timing operation can be carriedout at the same time in the first three management modes; and the four operation modes can be correspondingly switched. The satellite time management system is mainly used for calibrating the satellite time.

Description

technical field [0001] The invention belongs to the field of on-board time management. Background technique [0002] The on-board time management system is an important part of various satellites, which can complete tasks such as generation, maintenance and release of on-board time. On-board time is a necessary element for the execution of program-controlled commands, the control of attitude and orbit control systems, and the operation of payload systems. Its accuracy and reliability are related to the efficiency and success of satellite missions. Therefore, the accuracy and reliability of on-board time management systems are very important. [0003] At present, a commonly used traditional on-board time management system is implemented using an external RTC (Real Time Clock) chip and CPU. The RTC external chip is responsible for producing second interrupts and the CPU is responsible for counting seconds. The star time is determined by the second count value in the CPU and t...

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Application Information

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IPC IPC(8): G06F9/48G06F9/50
CPCG06F9/4812G06F9/5027
Inventor 崔秀海冯晓晓孟升卫彭宇彭喜元
Owner HARBIN INST OF TECH
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