An improved method for eliminating deputy peak of BOC navigation signal

Wang, Encheng; Zhao, Huapeng; Ding, Lin; Wang, Jie; Liu, Mengxin

doi:10.1587/comex.2022xbl0092

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…When only noise is included in U, the false alarm probability can be expressed as Equation (43). When the signal and noise coexist in U, U obeys the Rice distribution, and the mean and variance can be expressed as Equations ( 44) and (45).…”

Section: Acquisition Probability and Phase Discrimination Output Abou...mentioning

confidence: 99%

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Enhanced Synchronization Algorithms for BOC Signals Based on Reconstructed Sub-Correlation Functions

Zhang

Sun

et al. 2023

Electronics

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Aiming at the ambiguous synchronization of binary offset carrier (BOC) and composite binary offset carrier (CBOC) modulation signals due to secondary peaks for Global Navigation Satellite System (GNSS), a reconstructed sub-correlation function synchronization algorithm (RSSA) for BOC and CBOC is proposed. The general autocorrelation subfunctions of BOC and CBOC are obtained by deriving the subfunctions of the cross-correlation function between BOC signals with different modulation orders. According to the characteristics of the subfunctions, the corresponding reconstruction rules are set to obtain the unambiguous correlation functions. To further reduce the complexity of the local auxiliary signal, a local auxiliary signal optimization algorithm (LASOA) is proposed based on RSSA, which only needs to generate a local two-level signal compared to the conventional CBOC local four-level signal. The simulations show that the two algorithms proposed in this paper reduce the amplitude of the side peaks of the normalized correlation peaks of BOC by at least 0.09 compared with the autocorrelation side-peak cancellation technique (ASPeCT), maintain a high detection probability, and the multipath error is smaller than that of the autocorrelation side-peak cancellation technique (ASPeCT) and other traditional algorithms. The phase discrimination curves show that the linear region slope gains of the two algorithms in this paper are above 2 dB compared with the ASPeCT and other conventional algorithms.

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Section: Acquisition Probability and Phase Discrimination Output Abou...mentioning

confidence: 99%

“…From [43,44], the peak-to-average ratio can be expressed as Equation (51) and R RSC (τ) is denoted as the correlation function for each type of algorithm. It is another method to evaluate the acquisition performance, where the peak-to-average ratio is higher in the same case, indicating a better acquisition performance.…”

Section: Peak-to-average Ratiomentioning

confidence: 99%

Enhanced Synchronization Algorithms for BOC Signals Based on Reconstructed Sub-Correlation Functions

Zhang

Sun

et al. 2023

Electronics

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Integrated Communication and Measurement System with BOC-Assisted OFDM

Zeng

Xue

2022

Drones

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For unmanned aerial vehicles (UAVs), high-precision measurement and high-speed communication are necessary to realize flight and operational missions. In this paper, we propose an integrated communication and measurement system in a Doppler frequency offset environment. The system combines orthogonal frequency division multiplexing (OFDM) modulation with binary offset carrier (BOC) modulation to formulate an OFDM+BOC composite signal through power control. High-precision measurement is achieved through BOC modulation, and high data transmission is achieved through OFDM modulation. Furthermore, the high-precision Doppler frequency offset tracked by the BOC signal is adopted to assist in the demodulation of the OFDM signal. This substantially decreases the impact of the Doppler frequency offset on the OFDM signal. Moreover, the ranging error is within 10−2, and the maximum Doppler frequency error is within 2 Hz.

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An improved method for eliminating deputy peak of BOC navigation signal

Cited by 2 publications

References 7 publications

Enhanced Synchronization Algorithms for BOC Signals Based on Reconstructed Sub-Correlation Functions

Enhanced Synchronization Algorithms for BOC Signals Based on Reconstructed Sub-Correlation Functions

Integrated Communication and Measurement System with BOC-Assisted OFDM

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