Marine Search and Rescue of UAV in Long-Distance Security Modeling Simulation

Zheng, Lijuan; Hu, Jianbo; Shi, Xu

doi:10.1515/pomr-2017-0122

Cited by 14 publications

(8 citation statements)

References 13 publications

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“…With the rapid development of technology, aerial photography of drones has entered people's work and life, including environmental monitoring [1,2], attacks [3], search and rescue [4][5][6], and so on. That is, taking a picture of the earth from the air and obtaining a top view.…”

Section: Introductionmentioning

confidence: 99%

The optimization model of UAV shooting flight routes

Zheng¹,

Li²,

Xiao³

et al. 2023

Preprint

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For the first drone operator, it is difficult to master the techniques of flight altitude, flight speed and shooting angle. The main task of this paper is to analyze how to adjust the flying height, flight speed and shooting angle of the drone and use the drone to take satisfactory photos. Mainly complete the following four questions. In the first part, we analyze the geometric relationship between the flying height and the camera's acquisition range area. Then, we set a pixel accuracy score index as the criterion. The sum of the weighted capture area and the pixel accuracy score is taken as the objective function, the flight height does not exceed the height limit area, and the unit pixel point is greater than 800 as the constraint condition. An optimization model for the accuracy of drone shooting was established. We use computer simulation to solve the accuracy method step by step. We obtain that the height range of the drone is [25 m, 100 m], and the optimal aerial height is 33 m when θ = 60º. In the second part, based on the first part, we independently analyzed the numerical relationship between the shooting angle and the camera acquisition range area. The sum of the captured area and the pixel accuracy score after updating the weight is the objective function, the shooting angle is the decision variable, and the UAV shooting accuracy score optimization model is used. The golden section algorithm is used to solve this problem. When the flying speed of the drone is 40 m/s and the flying height is 33 m, the optimal range of the shooting angle of the drone is [56.2248º, 77.4972º]. In the third part, we established a small UAV system model and a ground target model based on the knowledge of robotics. We generated motion trajectories of discrete and continuous states of the object. The recursive target tracking algorithm is used to continuously adjust the UAV shooting angle to ensure that the target is within its shooting area. Finally, the corresponding values of the two shooting angles with respect to time are obtained. The range of angle changes is [42.18º, 79.87º] and [32.81º, 79.89º]. In the fourth part, we generated 1 skyscraper, 2 signal towers, 3 telephone poles, 3 residential buildings, for a total of 9 obstacles. We present a new RRT* algorithm for path planning based on the obstacles encountered by UAVs during flight, that is, using the cost function to select the node with the minimum cost in the field of expanding nodes as the parent node, and the two new nodes are recalculated. We use MATLAB to select a reasonable obstacle avoidance strategy, and the global optimal route is obtained by smoothing processing. Finally, we verify the rationality of the model. Through computer simulation, we determine the three-dimensional field of flight speed constant, flying height and shooting angle with respect to the score, which proves model stability and robustness.

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Section: Introductionmentioning

confidence: 99%

The optimization model of UAV shooting flight routes

Zheng¹,

Li²,

Xiao³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…With the rapid development of technology, aerial photography of drones has entered people's work and life, including environmental monitoring [1,2] , attacks [3] , Search and rescue [4][5][6] ,and so on. That is, taking a picture of the earth from the air and obtaining a top view.…”

Section: Introductionmentioning

confidence: 99%

The Optimization Model of Composite Material UAV Shooting Flight Routes

Zheng¹

2021

converter

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UAV is one of the important achievements of scientific and technological innovation, which has been widely used in various fields of life in recent years. UAVs of composite materials are the most popular because the composite itself has designability, and can be optimized according to the strength and stiffness of the aircraft without changing the structural weight. In order to ensure the UAV to carry out more accurate image acquisition under the actual ground conditions, through the analysis of decision variables, this paper uses the linear weighting of image shooting range and pixel accuracy to establish the objective function, and establishes the optimal shooting angle under different constraints Considering the actual motion characteristics of objects such as automobiles, this paper assumes that the tracked ground targets are a class of motion objects with non-integrity constraints when the flight altitude of UAV is fixed and the flight speed is constant. The ground target model and the flight dynamics nonlinear model are established. This paper presents a new RRT* algorithm for path planning based on the obstacles encountered by UAV during flight, that is, using the cost function to select the node with the minimum cost in the field of expanding nodes as the parent node, using the MATLAB to select a reasonable obstacle avoidance strategy, the global optimal route is obtained by smoothing processing, and the data simulation test is carried out. The experimental results show that the model is robust.

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“…In Indonesia, the tourism industry has a positive impact on the national economy, so that marine transportation accidents can reduce the reputation of the country's tourism industry as a whole (Bong, Sugiarto, Lemy, Nursiana, & Arianti, 2019). In addition, the losses created by ship accidents are often immeasurable, so rescue actions are an important focus (Zheng, Hu, & Xu, 2017). According to Permenhub Nomor 20 Tahun 2015, ship crews are required to report to Ship Safety Inspection Officials (Pejabat Pemeriksa Keselamatan Kapal) regarding ship damage and accidents, each ship must be manned by a ship crew who meets the qualification and competency requirements in accordance with national and international provisions, in particular the captain must meet educational requirements, training, ability, and skills as well as health, and the captain is responsible for the safety, security and order of ships, sailors, and cargo.…”

Section: Introductionmentioning

confidence: 99%

The Experience of Sailboat Crews in Dealing with Emergencies during the Accident in Labuan Bajo, East Nusa Tenggara, Indonesia: A Phenomenology

Krowa¹,

Ratnawati²,

Hayati³

2020

IJSOC

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Ship accidents create emergencies and affect victims, both physically and psychologically. Human error and extreme weather are still the main causes of ship accidents. The crew of the ship, especially the skipper, has an important role and responsibility in ensuring the safety and security of passengers while on the ship. This study is a phenomenology study that aimed to explore the experience of the sailboat crew in dealing with an emergency during an accident in Labuan Bajo, East Nusa Tenggara, Indonesia. Data collection using in-depth interviews with six crew members who have experienced accidents with tourist passengers. The interview result was recorded and transcribed by the researcher and data were then analysed using Interpretative Phenomenological Analysis (IPA) which consisted of six steps of analysis (Reading and re-reading, Initial Noting, Developing Emergent Themes, Searching for Connections Across Emergent Themes, Moving the Next Cases, and Looking for Patterns Across Cases). The results of this study indicate that the crew always tries to save passengers by utilizing the safety equipment available onboard. Although other results indicate that the crew felt that the ship accident was a disaster that occurred outside of the human will, or was not crew negligence.

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Marine Search and Rescue of UAV in Long-Distance Security Modeling Simulation

Abstract: Long

Cited by 14 publications

References 13 publications

The optimization model of UAV shooting flight routes

The optimization model of UAV shooting flight routes

The Optimization Model of Composite Material UAV Shooting Flight Routes

The Experience of Sailboat Crews in Dealing with Emergencies during the Accident in Labuan Bajo, East Nusa Tenggara, Indonesia: A Phenomenology

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