An Anti-Jamming Null-Steering Control Technique Based on Double Projection in Dynamic Scenes for GNSS Receivers

Wang, Hao; Chang, Qing; Xu, Yong

doi:10.3390/s19071661

Cited by 7 publications

(4 citation statements)

References 20 publications

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“…In reference [72], a null guidance control technique based on the binary image algorithm, which can effectively increase the null depth, is proposed. First, the dynamic model between the interference and the receiver is created.…”

Section: Literature Surveymentioning

confidence: 99%

A Review on GNSS-Threat Detection and Mitigation Techniques

Sharifi-Tehrani

Ghasemi²

2022

Cloud Computing and Data Science

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Global navigation satellite systems (GNSS) have played an important role in commercial, military and industrial navigation as well as cloud computing, geospatial analysis and digital modeling. Nowadays, with the advancement of science and technology, the capabilities of electronic warfare, including signal jamming, interference, and spoofing, have also advanced. Attacks and threats at simple, intermediate and advanced levels, endanger the security and reliability of GNSS in the commercial, industrial and military fields such as geolocation, geospatial techniques and digital twins. Therefore, coping with this problem and challenge is very important in maintaining security and reliability. At present, various methods and algorithms have been designed and utilized based on statistical properties, moving receiver, artificial array, wavelet transform and etc., each of which has advantages, disadvantages and blind spots. In this paper, the necessity and requirements for dealing with GNSS threats are emphasized, and the most important researches in the field of GNSS threat (jamming/interference/spoofing) detection and mitigation are studied and reviewed. Their advantages and disadvantages are discussed, and improving areas are also proposed.

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Section: Literature Surveymentioning

confidence: 99%

A Review on GNSS-Threat Detection and Mitigation Techniques

Sharifi-Tehrani

Ghasemi²

2022

Cloud Computing and Data Science

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“…Analysis Equation (6) shows that the n interpolation nodes t i (∀i = 0, 1, … n, i ≠ k) are the double zero points of the basis function 𝛼 k (t), where t k is not the zero point of 𝛼 k (t). In addition, since 𝛼 k (t) is a polynomial of degree 2n+1, we can set…”

Section: Calculate Satellite Position Coordinatesmentioning

confidence: 99%

“…[3][4][5] However, for dynamic scenes such as aircrafts, on the one hand, there is often a relative motion between the interference source and the receiver carrier, and the incident direction of the interference signal relative to the receiver may change at any time. When the relative motion causes the direction of interference to change rapidly, the signal we sample in a time interval is a dynamically changing signal; hence, the anti-jamming weight vector calculated based on the sample covariance matrix will form a widened null in the spatial spectrum, 6 which will cause attenuation and distortion to the satellite signal close to the interference direction. We present a comparison of the anti-jamming null morphology in static and dynamic scenarios, where the anti-interference weight vector is calculated every millisecond and the jamming-to-noise ratio (JNR) is set to 60 dB.…”

Section: Introductionmentioning

confidence: 99%

Anti‐jamming beam steering based on strapdown inertial navigation system aid for global satellite navigation system receivers in highly dynamic scenes

WangHao

Changqing

XuYong

et al. 2021

Trans Emerging Tel Tech

Self Cite

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In highly dynamic scenes, beamforming can alleviate satellite signal attenuation and distortion caused by null widening. In this article, a beam steering scheme based on strapdown inertial navigation system (SINS) aid is proposed.Firstly, the Hermite interpolation algorithm is used to calculate satellite position coordinates to reduce the amount of calculation. On the other hand, the satellite position coordinates are converted to the antenna coordinate system, and the beam direction is calibrated based on the attitude angle measured by the SINS to ensure the optimal beam gain. Finally, the proposed scheme is verified through a simulation, and the influence of SINS measurement errors and interpolation errors on the beamforming performance is evaluated. The simulation results show that the proposed method can effectively improve and stabilize the signal-to-noise ratio and reduce the influence of anti-interference processing on satellite signals close to the interference direction in dynamic scenes.

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“…The antenna array anti-jamming technology uses multiple antenna elements. According to the different incident directions of the signal and jamming, interference cancellation is performed using vector weighting, mainly using spatial domain anti-jamming algorithms [24][25][26][27][28][29][30][31][32][33]. Compared with antenna arrays, single antennas are widely used in the drone field due to their small size, low cost, and low power consumption.…”

Section: Introductionmentioning

confidence: 99%

A Study on Anti-Jamming Algorithms in Low-Earth-Orbit Satellite Signal-of-Opportunity Positioning Systems for Unmanned Aerial Vehicles

Yao,

Qin,

et al. 2024

Drones

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Low-Earth-Orbit (LEO) satellite Signal-of-Opportunity (SOP) positioning technology has gradually matured to meet the accuracy requirements for unmanned aerial vehicle (UAV) positioning in daily scenarios. Advancements in miniaturization technology for positioning terminals have also made this technology’s application to UAV positioning crucial for UAV development. However, in the increasingly complex electromagnetic environment, there remains a significant risk of degradation in positioning performance for UAVs in LEO satellite SOP positioning due to unintentional or malicious jamming. Furthermore, there is a lack of in-depth research from scholars both domestically and internationally on the anti-jamming capabilities of LEO satellite SOP positioning technology. Due to significant differences in the downlink signal characteristics between LEO satellites and Global Navigation Satellite System (GNSS) signals based on Medium Earth Orbit (MEO) or Geostationary Earth Orbit (GEO) satellites, the anti-jamming research results of traditional satellite navigation systems cannot be directly applied. This study addresses the narrow bandwidth and high signal-to-noise ratio (SNR) characteristics of signals from LEO satellite constellations. We propose a Consecutive Iteration based on Signal Cancellation (SCCI) algorithm, which significantly reduces errors during the model fitting process. Additionally, an adaptive variable convergence factor was designed to simultaneously balance convergence speed and steady-state error during the iteration process. Compared to traditional algorithms, simulation and experimental results demonstrated that the proposed algorithm enhances the effectiveness of jamming threshold settings under narrow bandwidth and high-power conditions. In the context of LEO satellite jamming scenarios, it improves the frequency-domain anti-jamming performance significantly and holds high application value for drone positioning.

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An Anti-Jamming Null-Steering Control Technique Based on Double Projection in Dynamic Scenes for GNSS Receivers

Cited by 7 publications

References 20 publications

A Review on GNSS-Threat Detection and Mitigation Techniques

A Review on GNSS-Threat Detection and Mitigation Techniques

Anti‐jamming beam steering based on strapdown inertial navigation system aid for global satellite navigation system receivers in highly dynamic scenes

A Study on Anti-Jamming Algorithms in Low-Earth-Orbit Satellite Signal-of-Opportunity Positioning Systems for Unmanned Aerial Vehicles

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