A Pulsar de-dispersion Algorithm Based on the Short Time Fourier Transform (STFT)

GAO Jian-jian; JIN Cheng-jin; GAO Long

Astronomical Research and Technology > 2007 > 4(1): 21-29.

GAO Jian-jian, JIN Cheng-jin, GAO Long. A Pulsar de-dispersion Algorithm Based on the Short Time Fourier Transform (STFT)[J]. Astronomical Research and Technology, 2007, 4(1): 21-29.

Citation:

GAO Jian-jian, JIN Cheng-jin, GAO Long. A Pulsar de-dispersion Algorithm Based on the Short Time Fourier Transform (STFT)[J]. Astronomical Research and Technology, 2007, 4(1): 21-29.

Citation:

GAO Jian-jian, JIN Cheng-jin, GAO Long. A Pulsar de-dispersion Algorithm Based on the Short Time Fourier Transform (STFT)[J]. Astronomical Research and Technology, 2007, 4(1): 21-29.

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A Pulsar de-dispersion Algorithm Based on the Short Time Fourier Transform (STFT)

National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China

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Received Date: April 19, 2006
Revised Date: May 08, 2006
Published Date: January 14, 2007

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Abstract

Abstract

In this paper, a pulsar de-dispersion algorithm based on the Short Time Fourier Transform (STFT) is presented.First of all the reason of the pulsar dispersion and several popular de-dispersion algrithms are introduced.Secondly the Short Time Fourier Transform (STFT)algorithm is also introduced and a de-dispersion algorihm is proposed based on it.Thirdly, the process of this algorithm is described in detail, and a comparison of the de-dispersion results among different size of window functions is made.Finally, after the comparison among these algorithms, it is shown that this easy-to-implement de-dispersion algorithm needs less amount of computation, and can de-disperse pulsar signals effectively.
- Pulsar,
- dispersion,
- de-dispersion,
- Short Time Fourier Transform

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