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Chapter and Conference Paper
Research on Spoofing Detection Based on C/N0 Measurements for GNSS Array Receivers
In recent years, Global Navigation Satellite System (GNSS) spoofing detection techniques have attracted wide attention. Compared with jamming, spoofing which always hides in the shadows has stronger concealment l...
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Article
Continuous time and frequency transfer using robust GPS PPP integer ambiguity resolution method
GPS precise point positioning (PPP) technique has been widely used in time and frequency transfer. The performance of PPP can be improved if the phase ambiguities are fixed to the correct integer number. In th...
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Chapter and Conference Paper
Interference Mitigation Based on Polarized Pattern Constrained Minimum Variance (PCMV) Using Dual-Polarized Array
The signals of Global navigation satellite system (GNSS) are susceptible to wideband RF interference. Polarized Pattern Constrained Minimum Variance algorithm (PCMV) is proposed to mitigate the interference an...
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Chapter and Conference Paper
High Precision Time Synchronization of LEO Constellation Based on PPP
Low earth orbit (LEO) constellation has significant advantages in enhancing the accuracy and integrity of GNSS. Navigation enhancement using LEO satellites has become a hot topic in the field of satellite navi...
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Chapter and Conference Paper
Carrier Phase Multipath Error Elimination Method for GNSS Signals Based on an APCRW Correlator
Carrier phase multipath effects are sources of error for high-precision applications of Global Navigation Satellite Systems (GNSS). In this work, we propose a correlator based on the Auxiliary Punctual Code Re...
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Chapter and Conference Paper
Modeling and Evaluation of Pseudorange Deviation of Satellite Navigation Digital Receiver
In GNSS, the pseudo-range deviation of the receiver reduces the positioning and timing accuracy of the user, which significantly affects the service performance of the system. In this paper, the pseudo-range d...
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Chapter and Conference Paper
Double Estimation Tracking Method Based on Chirp Delay Locked Loops for BOCC Modulations
Due to the higher power and faster geometric changes, the enhanced GNSS based on LEO satellites has received more and more attention while it has brought the new interference problem. Binary offset chirp carri...
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Chapter and Conference Paper
Simulation Study of Short Message Burst Signals Based on Poisson Distribution
The simulation of the random characteristics about short message burst signals is an important method to test the receiving performance, while the key is to find the random model of burst signals. This paper p...
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Chapter and Conference Paper
Performance Analysis of GNSS Adaptive Nulling Algorithm Under Signal Power Enhancement
In general, the accuracy and reliability of the GNSS receivers are seriously threatened by interference because the satellite signal arriving at the receivers is extremely weak. Under weak signal conditions, a...
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Chapter and Conference Paper
Subcarrier Periodic Shifting BOC Modulations
Designing the modern satellite navigation signals is essential for modernizing global navigation satellite systems (GNSS). For satisfying the diverse user requirements, more superior receiving performance is o...
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Chapter and Conference Paper
A Method of Carrier Phase Multipath Mitigation Based on Punctual Code Correlation Reference Waveform
Carrier phase multipath is one of the main sources of error for high-precision GNSS applications. In an urban environment with severe multipath fading, multipath effects can cause centimeter-scale shifts in ca...
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Article
Multipath detection based on single orthogonal dual linear polarized GNSS antenna
Based on the polarization difference between the multipath and the line-of-sight (LOS) signal, a method for multipath detection using a single antenna is proposed. The antenna has two channels to receive two o...
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Article
A millisecond integer ambiguity search method based on the inter-satellite distance limit for coarse-time GPS positioning
A technique for finding a priori position with coarse-time assistance and partial measurements is proposed to improve time-free positioning algorithm. The positioning method can be described as follows. First,...
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Chapter and Conference Paper
Optimal Carrier Tracking PLL in the Presence of Phase Noise in GNSS Receiver
Carrier tracking phase lock loop (PLL) applied extensively in GNSS receivers and high-precision time transfer systems. The PLL is one of the important structures for carrier phase tracking in receivers. Genera...
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Chapter and Conference Paper
Research and Application on Enhanced Reception Techniques Based on Distributed Antennas in Ground Station
In order to enhance navigation warfare capabilities of ground station, miniaturization and motorization is a trend. However, the demand of antenna aperture for downlink signal processing is diversity. Then con...
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Chapter and Conference Paper
The GPS Spoofing Detection Based on the Joint WSSE of DOA and Pseudorange
With the development of GPS spoofer techniques, spoofing signals can be consistent with the authentic signals on direction of arrival (DOA) or pseudorange. The receiver will not be effective for detecting such...
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Article
Modernization milestone: BeiDou M2-S initial signal analysis
The successful launch of two new-generation satellites of the BeiDou Navigation Satellite System (BDS), named BeiDou M1-S and BeiDou M2-S, marks another step in expanding BeiDou into a navigation system with ...
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Chapter and Conference Paper
Review of Timing and Positioning with OFDM
OFDM signal systems have been widely used in mobile communications, digital satellite TV, and have provided higher transmission rate and positioning information service. It has the potential in timing and rang...
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Chapter and Conference Paper
High Precision and Difference Measurement of Inter-element Amplitude and Phase Bias Errors Based on Channel Multiplexing
Modern satellite navigation system receiver use adaptive antenna array to suppress the RF interference and mitigate multipath signals in different directions from signals of interest. The inter-element amplitu...
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Chapter and Conference Paper
A Quick A-BDS Location Method Based on Characteristics of GEO Satellite and Ridge Estimate
The calculation of traditional A-GPS time-free positioning method will be very complex without the approximate position. But hybrid constellation was adopted by BeiDou Navigation Satellite System (BDS). And th...
