Pulsar observation device, system and method

An observation device and pulsar technology, applied in the application field, can solve the problems of inaccurate superposition, data time misalignment, etc., and achieve the effect of improving precision and accuracy

Inactive Publication Date: 2017-02-15
XINJIANG ASTRONOMICAL OBSERVATORY CHINESE ACADEMY OF SCI
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Problems solved by technology

If the long-term observation data is lost, it will cause time misalignment and cannot be superimposed accurately

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  • Pulsar observation device, system and method
  • Pulsar observation device, system and method
  • Pulsar observation device, system and method

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Embodiment Construction

[0029] The invention provides a pulsar observation device, system and method, which can provide a time precision up to 4 nanoseconds and can realize precise timing and observation of pulsars. Time accuracy includes two meanings of precise time information and precise time interval. The present invention counts clock pulses to obtain accurate time interval information. Accurate time information is obtained by combining precise GPS integer seconds with fractional seconds of clock pulses , so as to obtain high-precision time; at the same time, in order to avoid the time error caused by data transmission loss, a frame check header is added to the data frame, and if a frame loss is found, it will be compensated to ensure data integrity under long-term observation and temporal continuity.

[0030] First, the working principle of the pulsar observation device is introduced through the processing flow of the pulsar signal. figure 1 Shown is the processing flow of the pulsar signal. T...

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Abstract

The invention provides a pulsar observation device, system and method. Accurate time interval information can be obtained by counting a sampling clock, the time information of sampling time and sampled data are input into a data frame together to ensure highly consistent time and signal, the integer seconds obtained by time synchronization of a hydrogen atomic clock and a GPS receiver and the decimal seconds obtained by counting the sampling clock are utilized to acquire time information, thereby acquiring nanosecond scale high precision pulsar signal arrival time, and greatly improving the precision and accuracy of pulsar observation. In order to avoid the time error caused by data transmission loss, a network checking head is added in the data frame, compensation can be carried out if data frame loss is found, thus guaranteeing the data integrity and time continuity of long-time observation, and being of important significance to pulsar observation data processing.

Description

technical field [0001] The present invention relates to a pulsar observation device, system and method, which are suitable for pulsar observation and related scientific research, such as pulsar arrival time, intense pulse radiation, nulling, sub-pulse drift, magnetar, gamma ray pulsar, Observation studies such as the Fermi source are also applicable to applications such as pulsar timing and pulsar navigation. Background technique [0002] A pulsar is a type of neutron star rotating at high speed. It is formed when a massive star collapses under its own gravitational force at the end of its evolution. The synchrotron radiation emitted by the charged particles moving inside it rotates with the neutron star to form a radio beam. A pulse is received as the radio beam sweeps past Earth, hence the name pulsar. [0003] The rotation period of a pulsar ranges from a few milliseconds to more than ten seconds. The period stability is excellent, and it has ultra-high stability time ch...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/02
CPCG01C21/025
Inventor 裴鑫李健陈卯蒸聂俊
Owner XINJIANG ASTRONOMICAL OBSERVATORY CHINESE ACADEMY OF SCI
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