Method for eliminating interference of broadband time domain in pulsar arrival time data

A technology of arrival time and pulsar, applied in astronomical navigation and other directions, can solve the problems of affecting the contour shape of pulsar, complex establishment, difficult to realize, etc., to achieve the effect of reliable guarantee and improved accuracy

Active Publication Date: 2017-01-04
XINJIANG ASTRONOMICAL OBSERVATORY CHINESE ACADEMY OF SCI
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Problems solved by technology

[0007] The adaptive filtering method is the most effective interference elimination method in the current pulsar observation, but the adaptive filtering method requires a complex hardware environment, requiring two telescopes, receivers and real-time acquisition terminals, the two telescopes are the main telescope and the reference telescope , this method is effective, but it is very difficult to implement. First, a complex hardware environment needs to be established. At the same time, the adaptive filtering algorithm needs repeated debugging. Currently, it i...

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  • Method for eliminating interference of broadband time domain in pulsar arrival time data
  • Method for eliminating interference of broadband time domain in pulsar arrival time data
  • Method for eliminating interference of broadband time domain in pulsar arrival time data

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Embodiment Construction

[0052] The present invention will be further described below in conjunction with specific embodiments.

[0053] Such as figure 1 As shown, the present invention provides a method for eliminating broadband time-domain interference in pulsar time-of-arrival data, comprising the following steps:

[0054] S1: Observe the pulse signal of the pulsar;

[0055] Such as figure 2 As shown, the radio telescope is used to receive the pulsar signal from the universe, and the arrival time of the pulsar is observed. After the pulsar signal is focused by the radio telescope, it is amplified and mixed by a high-sensitivity receiver, and then digitally collected.

[0056] Such as image 3 As shown, in the pulsar observation, since the pulsar sends pulse signals of multiple frequencies at the same time, after all the pulse signals propagate through the interstellar space, the signals of different frequencies arrive at the earth at different times, image 3 The middle ordinate is the channel...

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Abstract

The invention relates to the technical field of astrophysics, and in particular relates to a method for eliminating the interference of a broadband time domain in pulsar arrival time data. The method comprises the following steps: observing a pulse signal of a pulsar, obtaining a periodical pulse outline of the pulsar, eliminating a dispersion delay of the periodical pulse outline of the pulsar, observing broadband radio interference in the pulse signal data of the pulsar, and eliminating the interference of the broadband time domain in the pulsar arrival time data. By utilizing the correlation of the broadband time domain interference, the broadband time domain interference is eliminated by virtue of channel subtraction so as to eliminate the broadband time domain interference in the pulsar observation data, a real pulsar outline is obtained, the precision of the pulsar arrival time is improved, and the observation and research of the pulsar arrival time can be more reliably guaranteed.

Description

technical field [0001] The invention relates to the technical field of astrophysics, in particular to a method for eliminating broadband time-domain interference in pulsar time-of-arrival data. Background technique [0002] Pulsar is one of the four major astronomical discoveries in the 1960s. Its discovery has had a huge impact on the development of contemporary astrophysics. Related research work has won the Nobel Prize in Physics twice, which shows that the observation and theory of pulsars The research is of great scientific significance. The observation and research of pulsars has always been a hot spot in the field of astrophysics. It is a "natural laboratory" for studying the properties and laws of matter under extreme physical conditions. [0003] One of the most notable features of pulsars is their extremely stable rotation period. Long-term monitoring results show that the long-term stability of their period is comparable to or even better than that of atomic clock...

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Application Information

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IPC IPC(8): G01C21/02
CPCG01C21/02
Inventor 刘志勇王娜陈卯蒸袁建平闫文明
Owner XINJIANG ASTRONOMICAL OBSERVATORY CHINESE ACADEMY OF SCI
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