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Journal of System Simulation

Abstract

Abstract: The simulation experiment researches about two key processes of earth-satellite quantum ranging process are carried out, including the transmission and reception about the photon pairs based on the acquisition, tracking and pointing (ATP) system, and the calculation about the time difference of arrival (TDOA) of entangled photon pairs by the coincidence counting principle. Motion trajectory of the quantum satellite “Mozi” based on its six orbital parameters and the acquisition, tracking and pointing process to the optical signal from satellite to ground users are simulated. The function and structure of the acquisition tracking and pointing system are analysed, and a time domain simulation diagram of the ATP system using Simulink is given. By using the azimuth and elevation angle as the input signals of the ATP system, the ATP process are simulated, and the tracking accuracy is within 2 μrad. Based on the accurate tracking of quantum satellite by ground users, the experiments of transmission and reception of entangled photon pair are designed and carried out. Accurate TDOA values of the entangled photon pairs are fitted by coincidence counting results, which has a picosecond level fitting error. This paper provides some theoretical and simulation basis for the realization of quantum positioning system.

First Page

377

Revised Date

2020-01-03

Last Page

388

CLC

TP391.9;V448.2

Recommended Citation

Cong Shuang, Duan Shiqi. Simulation Experiment of Quantum Ranging Process Based on the “Mozi” Quantum Satellite[J]. Journal of System Simulation, 2021, 33(2): 377-388.

DOI

10.16182/j.issn1004731x.joss.19-0543

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