Unambiguous Acquisition and Tracking Technique for General BOC Signals

Abstract

Abstract. This article presents a new unambiguous acquisition and tracking technique for general Binary

Unambiguous method for DLL BOC signals tracking

“…Likewise, Shen et al, a novel unambiguous acquisition and tracking technique (UATT) dedicated to BOCs (kn,n), BOCc (kn,n), and MBOC signals was proposed using the same principle as that of Liu and Feng . UATT, as stated by the authors, presents an efficient solution in modern GPS, European Galileo and Chinese BeiDou systems, since it removes the ambiguity problem in the acquisition process with relatively higher acquisition performance for low‐order BOC signals.…”

“…Actually, in presence of noise and MP, these side peaks, even though they seem to be very small, may have a very bad effect on the acquisition and tracking processes. In addition, the UATT DFs amplitudes show some reduction that affects negatively its performance …”

BOC Signal Acquisition Algorithm Based on Similar Enfoldment

“…In order to eliminate the ambiguity of BOC signal ACF, plenty of methods have been proposed by scholars all over the world. The main ideas are as follows: capturing the BOC signal with the acquisition method similar to the BPSK signal [2,[4][5][6][7][8], constructing auxiliary signals to eliminate the ambiguity of BOC signal ACF [3,[9][10][11][12][13][14][15][16], and constructing a filter to eliminate ambiguity of ACF [17]. Literature [5,6] (hereinafter referred to as the Fishman method) filters the upper (lower) sideband of the received signal and the local BOC code, respectively, and after that processes the upper (lower) sideband separately.…”

“…Subcarrier phase cancellation (SCPC) technology [8,11,12] eliminates ambiguity of ACF by two auxiliary signals. In Reference [13], the ambiguity of ACF is eliminated by two symmetrical auxiliary signals, which is applicable to all BOC ðm, nÞ signals. Other methods of constructing auxiliary signals can be referred to References [14][15][16].…”

“…Yang reconstructs [20,21] the BOC signal ACF by the removing zeros of crosscorrelation (RZCC) algorithm, which greatly increases the peak value of the main peak. In addition, plenty of researchers focus on the tracking problem of the BOC signal [4,9,13,22,23]. Many scholars have studied the BOC signal multipath elimination technology [24][25][26][27], which can be mainly categorized into nonparametric and parameterized class [26].…”