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An Adaptive Radio Frequency Interference Elimination Method for Radio Astronomy Signals

A technology of radio astronomy and radio frequency interference, which is applied in astronomical navigation, instruments, measuring devices, etc., can solve the problems of observation equipment sensitivity and signal-to-noise ratio decline, and achieve the purpose of solving the sensitivity and signal-to-noise ratio decline, improving sensitivity, and improving The effect of work efficiency

Active Publication Date: 2021-08-27
XINJIANG ASTRONOMICAL OBSERVATORY CHINESE ACADEMY OF SCI
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Problems solved by technology

[0010] The purpose of the present invention is to provide an adaptive radio frequency interference elimination method for radio astronomy signals to solve the problem of decreased sensitivity of observation equipment and signal-to-noise ratio, and to improve the efficiency of observation and search of radio astronomy systems

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  • An Adaptive Radio Frequency Interference Elimination Method for Radio Astronomy Signals
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  • An Adaptive Radio Frequency Interference Elimination Method for Radio Astronomy Signals

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Embodiment Construction

[0056] Such as figure 1 Shown is a flowchart of an adaptive radio frequency interference cancellation method for radio astronomy signals according to an embodiment of the present invention. The adaptive radio frequency interference elimination method of the present invention is applicable to various radio astronomy signals, and in this embodiment, the radio astronomy signals are pulsar signals.

[0057] Such as figure 1 As shown, the adaptive radio frequency interference elimination method of the radio astronomy signal specifically includes the following steps:

[0058] Step S1: Obtain baseband data, which includes reference data and observation data.

[0059] Wherein, the baseband data is acquired by an adaptive interference elimination system, and the adaptive interference elimination system includes a reference antenna system (that is, a reference system) and a radio telescope (that is, an observation system). In practical applications, the observation The data are obtai...

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Abstract

The present invention provides an adaptive radio frequency interference elimination method for radio astronomy signals, comprising: acquiring reference data and observation data, and dividing them into channels; initializing the gain function and output of the adaptive filter; calculating each reference data and observation data Average power of each data block; calculate normalization parameters; calculate cross-correlation function of output of adaptive filter and reference data; obtain cross-correlation average value; calculate gain function of adaptive filter; use gain function to modify reference data magnitude and phase, and get the output of the adaptive filter. The method of the present invention designs the cross-correlator according to the correlation characteristics between the reference data and the observation data, flexibly realizes the automatic adjustment of the gain function of the adaptive filter according to the reference data, effectively eliminates the radio frequency interference in the astronomical signal, and has high operation efficiency , and realize the lossless recovery of astronomical signals, solve the more complex radio frequency interference problems, and have high anti-interference performance.

Description

technical field [0001] The invention belongs to the field of radio astronomy, and in particular relates to an adaptive radio frequency interference elimination method for radio astronomy signals, which is suitable for interference processing of astronomical signals such as pulsars and fast radio bursts and related scientific research. Background technique [0002] With the rapid development of information technology and manufacturing technology, radio astronomy equipment has been continuously upgraded or replaced to make it have better observation performance, including improving the time and frequency resolution of data recording and obtaining higher receiving and recording bandwidth, etc. . However, the contradiction is that the International Telecommunication Union only allocates very limited spectrum resources for radio astronomy, and the result is that radio observation equipment is inevitably affected by the increasing non-astronomical signals, which mainly come from h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/02G01C25/00
CPCG01C21/02G01C25/00
Inventor 托乎提努尔王娜张海龙王杰
Owner XINJIANG ASTRONOMICAL OBSERVATORY CHINESE ACADEMY OF SCI
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