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Semi-physical simulation method and system for X-ray pulsar dynamic signals

A simulation method and dynamic signal technology, applied in the field of spacecraft navigation, can solve problems such as the inability to accurately simulate X-ray pulsar signals, and achieve the effects of promoting research work, high accuracy, and high profile precision

Active Publication Date: 2016-10-26
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide an X-ray dynamic signal simulation method and system with high reliability, precise controllable signal period, and modulated signal waveform, so as to solve the technical problem that the prior art cannot accurately simulate X-ray pulsar signals

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  • Semi-physical simulation method and system for X-ray pulsar dynamic signals
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  • Semi-physical simulation method and system for X-ray pulsar dynamic signals

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Embodiment Construction

[0046] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered by the claims.

[0047] The semi-physical simulation method of the X-ray pulsar dynamic signal of the present application comprises the following steps:

[0048] 1. Set the trajectory parameters of the spacecraft, the observation pulsar parameters, and the observation duration parameters, and the dynamic profile data generation server generates the dynamic profile data of the pulsar signal according to the set parameters.

[0049] Set the example simulation conditions: observe the pulsar PSR B0531+21 for 5400s. The spacecraft orbit selects the initial state of the low-Earth orbit as [x x0 ,x y0 ,x z0 ,v x0 ,v y0 ,v z0 ] T =[0,6578000,0,-7784.3384,0,0] T , the unit of position is meters, and the unit of velocity is m / s. The pulsar standard template profile waveform...

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Abstract

The invention relates to a semi-physical simulation method for X-ray pulsar dynamic signals. The method includes 1) a step of setting spacecraft motional orbit parameters, observation pulsar parameters and observation time parameters, and generating pulsar signal dynamic contour data by a dynamic contour data generating server according to the set parameters, 2) a step of sending in real time the dynamic contour data by the dynamic contour data generating server to a radiation source flow controller every certain time, 3) a step of driving an X-ray generator, by the radiation source flow controller, to generate pulsar dynamic X-ray photon signals, and 4) a step of measuring an X-ray photon arrival event by an X-ray detector. The method achieves semi-physical simulation of the X-ray pulsar dynamic signals, and is suitable for verification and engineering technique research of a pulsar navigation system theoretical method.

Description

technical field [0001] The invention relates to the technical field of spacecraft navigation, in particular to a half-physical simulation method and system for X-ray pulsar dynamic signals, which are suitable for the verification of theoretical methods of pulsar navigation systems and the research of engineering technology. Background technique [0002] X-ray pulsar navigation technology is a forward-looking autonomous navigation method, which uses X-ray signals radiated by pulsars to guide spacecraft. A pulsar is a high-speed rotating neutron star that can radiate X-ray signals at a high-precision and stable frequency. The long-term stability of the rotation period of some millisecond pulsars is comparable to that of current atomic clocks. Since pulsars are far away from the solar system, the high-precision time information provided by pulsars can provide position reference information for earth-orbiting spacecraft and deep space probes, thereby realizing navigation and pos...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00G01C21/24G01C21/02
CPCG01C21/02G01C21/24G01C25/00
Inventor 郑伟张大鹏汤国建王奕迪
Owner NAT UNIV OF DEFENSE TECH
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