Laser time transfer processing method and system, storage medium, device and application

Abstract

The invention belongs to the technical field of laser time transfer, and discloses a laser time transfer processing method and system, a storage medium, a device and an application, and the method comprises the steps: constructing respective local time systems of a ground observation station and a spacecraft, and controlling a laser pulse transmitting link and a laser pulse receiving link with thereference of the local time systems; in a transmitting link, performing event moment measurement on a first transmitted pulse, encoding the measurement moment, performing pulse position encoding modulation on subsequent pulses, and generating an encoded laser pulse sequence; receiving a sent coded laser pulse sequence containing time information at a spacecraft receiving link end, and convertingthe coded laser pulse sequence into an electric signal; measuring the moment of each pulse, and comparing the decoding moment with the measured pulse moment to obtain the system time deviation betweenthe spacecraft and the ground observation station. According to the invention, time transmission and synchronization between deep space aircrafts with farther distances are realized, and the controlprecision of the deep space aircrafts is improved.

Description

technical field [0001] The invention belongs to the technical field of laser time transfer, and in particular relates to a laser time transfer processing method, system, storage medium, device and application. Background technique [0002] At present, in daily production and life, it is often necessary to transfer time information between two systems. For example, in order to maintain the unity of time between the two systems, that is, time synchronization, it is necessary to transmit the time information of the local system to other systems. There are many traditional time transfer methods, such as broadcast time reporting, manual time synchronization, etc. to transfer time. However, the accuracy of the final time transfer result is not high due to the time delay generated by the traditional time transfer method. [0003] With the development of modern science and technology, the requirements for the accuracy of time information transmission in practical applications are ...

AI Technical Summary

Problems solved by technology

[0007] (1) The existing laser link time transfer system requires the satellite to be equipped with a corner reflector to perform two-way distance measurement to obtain the distance information from the satellite to the ground station. The two-way distance measurement greatly limits the application distance of the laser time transfer

[0008] (2) The existing laser link time transfer system can only realize the laser time transfer in the space near the earth

[0009] (3) The laser time-of-flight correction in the time transfer process relies on the traditional satellite laser ranging technology to measure the distance between the station and the satellite synchronously. The transfer efficiency is affected, the time transfer accuracy is limited by the laser ranging technology, and the ranging delay correction It will also be affected by factors such as the accuracy of the atmospheric model

[0010] (4) The existing laser link time transfer system uses radio as a carrier to send the synchronization information of time transfer to the ground station, which needs to occupy a downlink radio communication channel, and the ground and satellite need to increase the radio communication equipment to complete the time transfer

[0011] (5) The time transfer process is affected by radio data transmission, which restricts the development of deep space laser time transfer applications. With the significant increase in transmission distance, the quality and volume of radio communication equipment will also increase significantly

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