Complex double-binary-offset-carrier modulation for a unitary characterisation of Galileo and GPS signals

2006 ◽  
Vol 153 (5) ◽  
pp. 403 ◽  
Author(s):  
E.S. Lohan ◽  
A. Lakhzouri ◽  
M. Renfors
Keyword(s):  
Binary Offset Carrier

An Improved Acquisition Method for High-Order BOC-Modulated Signals Based on Fractal Geometry

2013 ◽  
Vol 846-847 ◽  
pp. 1185-1188 ◽  
Author(s):  
Hua Bing Wu ◽  
Jun Liang Liu ◽  
Yuan Zhang ◽  
Yong Hui Hu
Keyword(s):  
Fractal Geometry ◽  
Output Signal ◽  
Signal To Noise Ratio ◽  
High Order ◽  
Main Peak ◽  
Signal To Noise ◽  
Binary Offset Carrier ◽  
Simulation Results ◽  
Modulated Signals ◽  
Acquisition Method

This paper proposes an improved acquisition method for high-order binary-offset-carrier (BOC) modulated signals based on fractal geometry. We introduced the principle of our acquisition method, and outlined its framework. We increase the main peak to side peaks ratio in the BOC autocorrelation function (ACF), with a simple fractal geometry transform. The proposed scheme is applicable to both generic high-order sine-and cosine-phased BOC-modulated signals. Simulation results show that the proposed method increases output signal to noise ratio (SNR).

scholarly journals Receiving and Assessing L1C Signal for In-Orbit GPS III and QZSS Transmissions Using a Software-Defined Receiver

Electronics ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 11
Author(s):  
Xiang Huo ◽  
Xue Wang ◽  
Sen Wang ◽  
Xiaofei Chen ◽  
Ganghua Zhou ◽  
...  
Keyword(s):  
Test Equipment ◽  
Signal Interference ◽  
Positioning Error ◽  
Signal Modulation ◽  
Binary Offset Carrier ◽  
Satellite Constellations ◽  
Satellite Constellation ◽  
Omnidirectional Antenna ◽  
Positioning Method ◽  
Message Structure

To avoid signal interference in L1 frequency and provide various services, GPS has updated a modern signal, called L1C, which has been tested with three QZSS satellites launched in 2017. In December 2018, the first GPS III satellite was launched, which implies improved joint positioning using GPS and QZSS L1C signal. The L1C signal offers a series of advanced designs in signal modulation, message structure and coding. We present complete methodologies for joint L1C signal receiving and processing. For the transmitted signals, we present a methodology and results from collecting and assessing Binary Offset Carrier (BOC) modulation and time-multiplexed BOC (TMBOC) modulation used in the L1C signal. Using the same omnidirectional antenna and test equipment, we collected the L1C signal in Xi’an and Sanya, China, respectively. The experiments in Xi’an verify the joint positioning method to complement the GPS III and QZSS satellite constellations. Our methodology evaluates the ranging difference and positioning error of BOC and TMBOC modulation under the same environment and satellite constellation configuration in Sanya. It is also verified that the joint positioning error is less than the QZSS-only positioning due to the optimization of the satellite constellation.

Ambiguity Mitigating Technique for Cosine-Phased Binary Offset Carrier Signal

2012 ◽  
Vol 11 (6) ◽  
pp. 1981-1984 ◽  
Author(s):  
Yanling Zhou ◽  
Xiulin Hu ◽  
Ting Ke ◽  
Zuping Tang
Keyword(s):  
Binary Offset Carrier
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