A Novel Method of Distortionless Correlation Function after STAP for BOC

Abstract

Binary offset carrier (BOC), which is a new modulation and has an additional subcarrier compared with the binary phase shift carrier (BPSK), has superior performance on anti-jamming, anti-multipath, and other aspects in global navigation satellite system (GNSS). However, antenna array, which is equipped with space-time adaptive processor (STAP), could break the correlation function of BOC and make the correlation function distortion. In this letter, we analyze the fundamental reason of the distortion correlation function, and we propose a novel method which can preserve the integrity of correlation function. The proposed method is effective for BOC, which is demonstrated by theory analysis and simulation experiment.