Adaptive blind anti-jamming algorithm using acquisition information to reduce the carrier phase bias

Jia, Qiongqiong; Wu, Renbiao; Wang, Wenyi; Lu, Di; Wang, Lu

doi:10.1007/s10291-018-0764-4

Cited by 15 publications

(19 citation statements)

References 8 publications

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“…Hence PI is implemented in a pre-correlation structure, as shown in Figure 1(b). To further enhance the satellite signal quality while nulling high power interference, beam gain can be formed in each satellite direction (Daneshmand et al, 2013a;Jia et al, 2018). The beam gain forming weight can be obtained by using the DOA from the satellite ephemeris and the coarse receiver position, hence it can be implemented as the pre-correlation structure, see Figure 1(c) (Daneshmand et al, 2013a;Broumandan et al, 2016).…”

Section: Techniques For Array Antennamentioning

confidence: 99%

“…The beam null forming method LCMP is used in this paper to assist the discussion. The objective function of LCMP is given by (Jia et al, 2018;Wu et al, 2018) min…”

Section: Lcmp (Multipath Doa Required)mentioning

confidence: 99%

“…It has the ability to separate signals overlapping in frequency and temporal domains due to the usage of spatial DOA information. The superiority of array antenna beam forming has attracted comprehensive study for mitigation of high power interference such as jamming (Li et al., 2014; Fernandez-Prades et al., 2016), continuous wave interference (Li et al., 2011) and low power interference such as spoofing (Cuntz et al., 2016) and multipath (Daneshmand et al, 2013a, 2013b). Although the focus here is on multipath mitigation, high power interference mitigation is briefly reviewed first to help address the special issues for multipath mitigation.…”

Section: Introductionmentioning

confidence: 99%

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A cost-effective beam forming structure for global navigation satellite system multipath mitigation and its assessment

Jia

Hsu

et al. 2020

J. Navigation

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Array antenna beam forming has high potential to improve the performance of the global navigation satellite system (GNSS) in urban areas. However, the widespread application of array antennas for GNSS multipath mitigation is restricted by many factors, such as the complexity of the system, the computation load and conflicts between required performance, cost budget and limited room for the antenna placement. The scope of this work is triplicate. (1) The pre-correlation beam forming structure is first suggested for multipath mitigation to decrease the system complexity. (2) With the pre-correlation structure, the equivalence of adaptive beam forming to quiescent beam forming is revealed. Therefore, the computational load for beam forming is greatly decreased. (3) A theoretical model is established to link the benefits of beam forming with GNSS performance improvement in terms of pseudorange quality. The model can be used by industry to balance the aforementioned restrictions. Numerical results with different array settings are given, and a 2 × 2 rectangle array with $0.4\lambda $ element spacing is suggested as a cost-effective choice in GNSS positioning applications in urban canyon areas.

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Section: Techniques For Array Antennamentioning

confidence: 99%

“…The beam null forming method LCMP is used in this paper to assist the discussion. The objective function of LCMP is given by (Jia et al, 2018;Wu et al, 2018) min…”

Section: Lcmp (Multipath Doa Required)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A cost-effective beam forming structure for global navigation satellite system multipath mitigation and its assessment

Jia

Hsu

et al. 2020

J. Navigation

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“…The algorithm performs quite well in high-power suppression jamming in the radar and navigation field [14][15][16][17], and through algorithm improvement, it has better performance [18]. Proposed an adaptive anti-jamming dualpolarized ellipsoid minimum variance distortionless response (EMVDR) method, while improving the anti-interference performance, the GPS coverage ratio can keep from 60% to 70% [19]. Used the MVDR improvement algorithm for GNSS high precision applications in the presence of jamming and achieved good results [20].…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of repeater spoofing suppression based on GNSS multi-beam receiver

Ren

Chen²,

Ni³

et al. 2022

Front. Phys.

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In order to analyze the anti-spoofing performance of the Global Navigation Satellite System (GNSS) multi-beam anti-jamming receiver in the presence of direct repeater spoofing, this paper deduces the theoretical formulas of the output real signal and the direct repeater spoofing signal power of the multi-beam anti-jamming receiver using the minimum variance distortionless response (MVDR) algorithm, when the number of snapshots is limited. The influence of the power of the spoofing signal reaching the surface of the antenna array on the output power of the real signal and the spoofing signal is analyzed in detail. The analysis shows that no matter how the power of the direct repeater spoofing signal is set, the multi-beam anti-jamming receiver using the MVDR algorithm can always suppress the spoofing below the real signal power level, and the suppression effect is more significant when the spoofing signal-to-noise ratio is high. Finally, the correctness of the conclusion is verified by simulation.

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“…Besides, the GNSS signal is very weak, it comes from 20,000-30,000 kilometers away and is vulnerable to unintentional radio frequency interference or malicious interference (jamming and spoofing) [6], [7]. Therefore, it is of great significance to enhance the reliability and positioning accuracy of GNSS by other means [8].…”

Section: Introductionmentioning

confidence: 99%

Signal acquisition of Luojia-1A low earth orbit navigation augmentation system with software defined receiver

Chen

Shen

et al. 2021

Geo-spatial Information Science

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Low Earth Orbit (LEO) satellite navigation signal can be used as an opportunity signal in the case of a Global Navigation Satellite System (GNSS) outage, or as an enhancement by means of traditional GNSS positioning algorithms. No matter which service mode is used, signal acquisition is a prerequisite for providing enhanced LEO navigation services. Compared with the medium orbit satellite, the transit time of the LEO satellite is shorter. Thus, it is of great significance to expand the successful acquisition time range of the LEO signal. Previous studies on LEO signal acquisition are based on simulation data. However, signal acquisition research based on real data is crucial. In this work, the signal characteristics of LEO satellites: power space density in free space and the Doppler shift of LEO satellites are individually studied. The unified symbolic definitions of several integration algorithms based on the parallel search signal acquisition algorithm are given. To verify these algorithms for LEO signal acquisition, a Software Defined Receiver (SDR) is developed. The performance of these integration algorithms on expanding the successful acquisition time range is verified by the real data collected from the Luojia-1A satellite. The experimental results show that the integration strategy can expand the successful acquisition time range, and it will not expand indefinitely with the integration duration. The performance of the coherent integration and differential integration algorithms is better than the other two integration algorithms, so the two algorithms are recommended for LEO signal acquisition and a 20 ms integration duration is preferred. The detection threshold of 2.5 is not suitable for all integration algorithms and various integration durations, especially for the Maximum-to-Mean Ratio indicator.

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Adaptive blind anti-jamming algorithm using acquisition information to reduce the carrier phase bias

Cited by 15 publications

References 8 publications

A cost-effective beam forming structure for global navigation satellite system multipath mitigation and its assessment

A cost-effective beam forming structure for global navigation satellite system multipath mitigation and its assessment

Performance analysis of repeater spoofing suppression based on GNSS multi-beam receiver

Signal acquisition of Luojia-1A low earth orbit navigation augmentation system with software defined receiver

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