A SYSTEM DESIGN OF REAL-TIME NARROWBAND RFI DETECTION AND MITIGATION FOR GNSS-R RECEIVER

NSSC OpenIR

	A SYSTEM DESIGN OF REAL-TIME NARROWBAND RFI DETECTION AND MITIGATION FOR GNSS-R RECEIVER
Alternative Title	WOS:000519270604262
	Qiu, Tongsheng 1; Wang, Xianyi 1; Tian, Yusen 1; Du, Qifei 1; Sun, Yueqiang 1
Source Publication	2019 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS 2019)
	2019
Pages	5167-5170
Language	英语
ISSN	2153-6996
ISBN	978-1-5386-9154-0
Abstract	With the rapid development of radio detection and wireless communication, narrowband radio-frequency interference (NB-RFI) is a serious threat for GNSS-R (global navigation satellite systems - reflectometry) receivers. However, interferometric GNSS-R (iGNSS-R) is more prone to the NB-RFIs than conventional GNSS-R (cGNSS-R), due to wider bandwidth and unclean replica. Therefore, there is strong demand of detecting and mitigating NB-RFIs for GNSS-R receivers, especially iGNSS-R receivers. Hence, focusing on working with high sampling rate and simplifying the fixed-point implementation on FPGA, this paper proposes a system design exploiting cascading IIR band-stop filters (BSFs) to suppress NB-RFIs. Furthermore, IIR BSF compared with IIR notch filter (NF) and IIR band-pass filter (BPF) is the merely choice that is able to mitigate both white narrowband interference (WNBI) and continuous wave interference (CWI) well. Finally, validation and evaluation are conducted, and then it is indicated that the system design can detect NB-RFIs and suppress WNBI and CWI effectively, which improves the signal-to-noise ratio (SNR) of the Delay-Doppler map (DDM).
Keyword	RFI detection mitigation GNSS-R DDM system design FPGA
Conference Name	IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Conference Date	JUL 28-AUG 02, 2019
Conference Place	Yokohama, JAPAN
Indexed By	CPCI
Document Type	会议论文
Identifier	http://ir.nssc.ac.cn/handle/122/7784
Collection	中国科学院国家空间科学中心
Affiliation	1.Chinese Acad Sci, Natl Space Sci Ctr, Beijing Key Lab Space Environm Explorat, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation GB/T 7714	Qiu, Tongsheng,Wang, Xianyi,Tian, Yusen,et al. A SYSTEM DESIGN OF REAL-TIME NARROWBAND RFI DETECTION AND MITIGATION FOR GNSS-R RECEIVER[C],2019:5167-5170.

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