Numerical model of the QiTai radio Telescope PAF receiver signal and simulation of interference mitigation

Xinjiang Qitai is constructing a 110-m fully steerable radio telescope (QiTai radio Telescope [QTT]) equipped with a phased array feeds (PAF) receiver, which will install the focal plane operating from 0.7 to 1.8 GHz. In this article, we introduce a PAF receiver model for beamforming, and the numeri...

Full description

Saved in:
Bibliographic Details
Published inFrontiers in astronomy and space sciences Vol. 11
Main Authors Wu, Peng, Li, Jian, Chen, Mao-Zheng
Format Journal Article
LanguageEnglish
Published Frontiers Media S.A 10.07.2024
Subjects
array signal processing
beamforming
linear constraint minimum variance
phased array feeds
QiTai radio Telescope
signal numerical model
Online AccessGet full text
ISSN2296-987X
2296-987X
DOI10.3389/fspas.2024.1392970

Cover

More Information
Summary:Xinjiang Qitai is constructing a 110-m fully steerable radio telescope (QiTai radio Telescope [QTT]) equipped with a phased array feeds (PAF) receiver, which will install the focal plane operating from 0.7 to 1.8 GHz. In this article, we introduce a PAF receiver model for beamforming, and the numerical model of the internal and external noise for this PAF receiver is provided using electromagnetic field simulation software. The linear constraint minimum variance (LCMV) algorithm is used to simulate the interference mitigation. The interference mitigation rate is from 0.581 to 0.921, and the signal restoration rate is from 0.998 to 1.512 within the error range of an interference arrival angle of 10°. This conclusion can be used in the signal correction of the PAF receiver for interference mitigation.
ISSN:2296-987X
2296-987X
DOI:10.3389/fspas.2024.1392970