A direct path interference suppression method for GNSS-based passive radar
A direct path interference suppression method for GNSS-based passive radar
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- Author(s): Z. Pei 1 ; P. Wang 1 ; X. Zhou 1 ; H. Zeng 1 ; Y. Liu 1
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View affiliations
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Affiliations:
1:
School of Electronics and Information Engineering , Beihang University , Beijing, 100191 , China
Source:
IET International Radar Conference (IET IRC 2020),
2021
p.
1119 – 1123
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Affiliations:
1:
School of Electronics and Information Engineering , Beihang University , Beijing, 100191 , China
- Conference: IET International Radar Conference (IET IRC 2020)
- DOI: 10.1049/icp.2021.0615
- ISBN: 978-1-83953-540-6
- Location: Online Conference
- Conference date: 04-06 November 2020
- Format: PDF
Owing to the advantages of low cost and great concealment, GNSS-based passive radar has gradually become a hotspot in the field of remote sensing and target detection. One of the main problems in GNSS-based radar is direct path interference (DPI) and it severely affects the detection of target echo signals. A direct wave suppression method based on signal reconstruction for GNSS-based passive radar is proposed to solve DPI in this paper. After acquiring the information of the code phase and time-delay, a direct wave signal is reconstructed consistently with that in the main channel by synchronizing the amplitude and phase for the direct wave cancellation. Experimental results demonstrate that this method effectively suppress the direct path interference and benefit the target detection processing.
Inspec keywords: satellite navigation; radar signal processing; radar interference; interference suppression; passive radar; signal reconstruction; signal detection
Subjects: Radionavigation and direction finding; Signal detection; Radar theory; Electromagnetic compatibility and interference; Satellite communication systems; Radar equipment, systems and applications