{"title":"基于分数阶傅里叶变换和功率反演的GNSS接收机宽带LFM干扰抑制","authors":"Zeze Yang, Yubai Li, Lei Mao, Fei Wang, Jun Pan","doi":"10.1109/ISCTIS51085.2021.00083","DOIUrl":null,"url":null,"abstract":"In order to improve the anti-jamming ability of global navigation satellite system (GNSS) receiver against wideband LFM jamming signal, a novel wideband LFM interference suppression method based on fractional Fourier transform (FRFT) and power inversion (PI) algorithm is proposed. Firstly, the fractional Fourier (FRF) domain correlation matrix of array received signal with wideband LFM interference is derived to replace the traditional correlation matrix. Then, the PI algorithm is used to suppress the wideband LFM interference in the FRF domain. Finally, the inverse FRFT is taken to get the signal with the LFM interference being mitigated. Simulation results demonstrate that the proposed method can effectively suppress the wideband LFM interference. Even though the direction-of-arrival(DOA) of the GNSS signal is similar to or even the same as that of the wideband LFM interference, it can also effectively suppress the interference signal without causing significant GNSS signal loss, and it can provide correctly acquisition.","PeriodicalId":403102,"journal":{"name":"2021 International Symposium on Computer Technology and Information Science (ISCTIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Wideband LFM Interference Suppression of GNSS Receiver Based on Fractional Fourier Transform and Power Inversion\",\"authors\":\"Zeze Yang, Yubai Li, Lei Mao, Fei Wang, Jun Pan\",\"doi\":\"10.1109/ISCTIS51085.2021.00083\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In order to improve the anti-jamming ability of global navigation satellite system (GNSS) receiver against wideband LFM jamming signal, a novel wideband LFM interference suppression method based on fractional Fourier transform (FRFT) and power inversion (PI) algorithm is proposed. Firstly, the fractional Fourier (FRF) domain correlation matrix of array received signal with wideband LFM interference is derived to replace the traditional correlation matrix. Then, the PI algorithm is used to suppress the wideband LFM interference in the FRF domain. Finally, the inverse FRFT is taken to get the signal with the LFM interference being mitigated. Simulation results demonstrate that the proposed method can effectively suppress the wideband LFM interference. Even though the direction-of-arrival(DOA) of the GNSS signal is similar to or even the same as that of the wideband LFM interference, it can also effectively suppress the interference signal without causing significant GNSS signal loss, and it can provide correctly acquisition.\",\"PeriodicalId\":403102,\"journal\":{\"name\":\"2021 International Symposium on Computer Technology and Information Science (ISCTIS)\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2021 International Symposium on Computer Technology and Information Science (ISCTIS)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISCTIS51085.2021.00083\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 International Symposium on Computer Technology and Information Science (ISCTIS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISCTIS51085.2021.00083","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Wideband LFM Interference Suppression of GNSS Receiver Based on Fractional Fourier Transform and Power Inversion
In order to improve the anti-jamming ability of global navigation satellite system (GNSS) receiver against wideband LFM jamming signal, a novel wideband LFM interference suppression method based on fractional Fourier transform (FRFT) and power inversion (PI) algorithm is proposed. Firstly, the fractional Fourier (FRF) domain correlation matrix of array received signal with wideband LFM interference is derived to replace the traditional correlation matrix. Then, the PI algorithm is used to suppress the wideband LFM interference in the FRF domain. Finally, the inverse FRFT is taken to get the signal with the LFM interference being mitigated. Simulation results demonstrate that the proposed method can effectively suppress the wideband LFM interference. Even though the direction-of-arrival(DOA) of the GNSS signal is similar to or even the same as that of the wideband LFM interference, it can also effectively suppress the interference signal without causing significant GNSS signal loss, and it can provide correctly acquisition.