X-ray pulsar navigation ground verification system based on visible light source

Abstract

The invention discloses an X-ray pulsar navigation ground verification system based on a visible light source, which mainly solves the problems of complex structure of the existing system, low cycle accuracy of simulated pulsar signals and single simulation mode, which includes a contour data generation unit (1) , multi-channel voltage signal output unit (2), photon generation unit (3) and electronics readout unit (4), navigation verification unit (5), contour data generation unit receives the control order of navigation verification unit, and from navigation The verification unit reads the data, generates profile data and transmits them to the multiple voltage signal output unit, outputs multiple voltage signals to drive the photon generation unit, outputs multiple electrical pulse signals to the electronic readout unit, calibrates the pulse arrival time, and converts the time series Transfer to the navigation verification unit. The invention has simple structure and high signal period stability, and can be used for verification of various navigation algorithms.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to an X-ray pulsar navigation ground verification system, which can be used to verify the X-ray pulsar navigation algorithm at the photon level, and provides an experimental platform for theoretical research on pulsar navigation. Background technique [0002] X-ray pulsar autonomous navigation is a completely autonomous navigation method with development prospects, which has important strategic research significance and has attracted the attention of scholars at home and abroad. Since 1999, the major aerospace countries in the world have started the theoretical research and flight experiment verification related to X-ray pulsar navigation. ESA, Russia, Japan and other countries and organizations have carried out a large number of proof-of-principle prototypes and flight experiments. In 2017, NASA launched a Station Explorer for X-ray Timing and Navigation Technology experiment. ...

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Problems solved by technology

[0005] 1. A ground simulation method and device using X-ray pulsar navigation, authorized announcement number: CN101782390B, the device uses an X-ray source for experiments, and has advantages in the research of X-ray detector technology, but due to the introduction of mechanical structure , resulting in low simulation accuracy of pulsar period characteristics, which cannot meet the needs of theoretical research

[0006] 2. X-ray pulsar photon signal ground simulation system with high time-frequency stability, patent application publication number: CN102778236A, this system retains the simulated physical process, has high simulation reliability, and has very high time-frequency stability and Accuracy, but the disadvantage is that it is impossible to simulate pulsar signals with multi-physics characteristics, including pulsar rotation characteristics, pulsar timing noise characteristics, and the Doppler effect generated by spacecraft motion

[0007] 3. X-ray pulsar navigation ground test system, application publication number: CN103048000A, this test system is a closed-loop test system for X-ray pulse signal simulation and navigation algorithm verification, considering the influence of various factors in the actual space, but the control of the system The structure and operation are complex and the scale is large, which is not conducive to flexible use in the laboratory

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