Assessing the Unmanned Aerial Vehicles' Surveillance Problems and Actual Solution Options from the Different Stakeholders' Viewpoint

Károly, Bianka; Sághi, Balázs

doi:10.3311/pptr.13749

Cited by 5 publications

(5 citation statements)

References 6 publications

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“…In recent decades, many domestic and foreign experts and scholars have conducted in-depth research on the relevant theories and practices of multitarget tracking methods and have achieved fruitful results. Related methods have been widely used in military fields such as air defense security reconnaissance and early warning, missile defense, battlefield target monitoring, and civil fields such as traffic control in civil aviation, vehicle automatic driving systems, and computer vision [4]. Multitarget tracking is to use the observations obtained by sensors to continuously estimate and predict the state of multiple targets.…”

Section: Related Workmentioning

confidence: 99%

Research on Channel Optimization of Ads‐B Aviation Target Surveillance Radar Based on Improved Filtering Algorithm

Zheng¹,

Tang²,

2021

Complexity

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In order to improve the surveillance effect of the aviation target surveillance radar, this paper improves the traditional filtering algorithm and builds the channel optimization system of the ADS-B aviation target surveillance radar based on the improved filtering algorithm. Moreover, this paper uses algorithm improvement to ensure the positive definite or semipositive definiteness of the state covariance and uses the root mean square volume Kalman filter to avoid the filter divergence or tracking interruption caused by the nonpositive definiteness of the matrix; the filtering principle of the interactive multimodel is to use multiple filters for parallel processing and achieve the adaptive adjustment algorithm residual error by adjusting the one-step prediction covariance in the adjustment algorithm. In addition, this paper combines the actual needs to construct a system functional structure to optimize the channel of the ADS-B aviation target surveillance radar and uses software engineering methods to model and analyze the requirements. Finally, this paper designs experiments to verify system performance. The research results show that the performance of the system constructed in this paper meets actual needs.

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Section: Related Workmentioning

confidence: 99%

Research on Channel Optimization of Ads‐B Aviation Target Surveillance Radar Based on Improved Filtering Algorithm

Zheng¹,

Tang²,

2021

Complexity

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“…Let us consider the conventional linear state-space representation of the above described system, where the partial derivatives, which determine the dynamics of the plant, are considered changing with the operational mode of the engine, thus the modeled object has variable matrices, which yield the system of Equations (5) and (6), as described in textbooks like [44] or [45]. The tilde sign shown over the variables indicates the deviation from a selected nominal operating condition.x…”

Section: Lpv Model Of the Turbojetmentioning

confidence: 99%

“…Turbojet engines, even if their utilization has reduced in commercial aviation during the past decades due to their comparably less propulsive efficiency [4], still have a role in different propulsion systems. There is an increasing interest in Unmanned Aerial Vehicles (UAV's) in the past decade [5], which has led to a considerable interest in developing micro turbojet engines, as stated in [6,7] or [8], because these engines can be applied on military UAV's, which can include high-speed aircraft (as shown in [9]), where the turbojet already provides fair propulsive efficiency. Meanwhile, there is an ever-increasing interest in radio-controlled model airplanes that imitate real aircraft in civil sector as already reported by [10], and these devices are becoming more attractive [11].…”

Section: Introductionmentioning

confidence: 99%

Sliding Mode Control for Micro Turbojet Engine Using Turbofan Power Ratio as Control Law

Derbel

Beneda

2020

Energies

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The interest in turbojet engines was emerging in the past years due to their simplicity. The purpose of this article is to investigate sliding mode control (SMC) for a micro turbojet engine based on an unconventional compound thermodynamic parameter called Turbofan Power Ratio (TPR) and prove its advantage over traditional linear methods and thrust parameters. Based on previous research by the authors, TPR can be applied to single stream turbojet engines as it varies proportionally to thrust, thus it is suitable as control law. The turbojet is modeled by a linear, parameter-varying structure, and variable structure sliding mode control has been selected to control the system, as it offers excellent disturbance rejection and provides robustness against discrepancies between mathematical model and real plant as well. Both model and control system have been created in MATLAB® Simulink®, data from real measurement have been taken to evaluate control system performance. The same assessment is conducted with conventional Proportional-Integral-Derivative (PID) controllers and showed the superiority of SMC, furthermore TPR computation using turbine discharge temperature was proven. Based on the results of the simulation, a controller layout is proposed and its feasibility is investigated. The utilization of TPR results in more accurate thrust output, meanwhile it allows better insight into the thermodynamic process of the engine, hence it carries an additional diagnostic possibility.

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“…Several potential solutions exist to reduce the number of missed ADS-B messages inherent in high-density airspace, including (a) allocating additional channels for ADS-B messages [10]; (b) limiting the number of vehicles that can be in the airspace simultaneously [11]; (c) reducing the power of UAT ADS-B communications for slow-flying vehicles, such as UASs [12]; (d) offloading UAS message communication to Long-Term Evolution (LTE) or 5G networks [10,13]; and (e) implementing a central message coordination system for UAT ADS-B messages [14].…”

Section: Introductionmentioning

confidence: 99%

“…While each approach has potential benefits, they likewise come with their own drawbacks. For instance, allocating new communication channels would require collaboration with the international community [10] and creating/installing new equipment to match different frequency specifications [13]. Limiting aircraft operations would reduce the application benefits of using UASs [11].…”

Section: Introductionmentioning

confidence: 99%

Collision Avoidance Capabilities in High-Density Airspace Using the Universal Access Transceiver ADS-B Messages

Karch,

Barrett,

Ellingson

et al. 2024

Drones

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The safe integration of a large number of unmanned aircraft systems (UASs) into the National Airspace System (NAS) is essential for advanced air mobility. This requires reliable air-to-air transmission systems and robust collision avoidance algorithms. Automatic Dependent Surveillance-Broadcast (ADS-B) is a potential solution for a dependable air-to-air messaging system, but its reliability when stressed with hundreds to thousands of vehicles operating simultaneously is in question. This paper presents an ADS-B model and analyzes the capabilities of the Universal Access Transceiver (UAT), which operates at a frequency of 978 MHz. We use a probabilistic collision avoidance algorithm to examine the impact of varying parameters, including the number of vehicles and the transmission power of the UAT, on the overall safety of the vehicles. Additionally, we investigate the root causes of co-channel interference, proposing enhancements for safe operations in environments with a high density of UAS. Simulation results show message success and collision rates. With our proposed enhancements, UAT ADS-B can provide a decentralized air traffic system that operates safely in high-density situations.

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Assessing the Unmanned Aerial Vehicles' Surveillance Problems and Actual Solution Options from the Different Stakeholders' Viewpoint

Cited by 5 publications

References 6 publications

Research on Channel Optimization of Ads‐B Aviation Target Surveillance Radar Based on Improved Filtering Algorithm

Research on Channel Optimization of Ads‐B Aviation Target Surveillance Radar Based on Improved Filtering Algorithm

Sliding Mode Control for Micro Turbojet Engine Using Turbofan Power Ratio as Control Law

Collision Avoidance Capabilities in High-Density Airspace Using the Universal Access Transceiver ADS-B Messages

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