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Cooperative UAV transport operations in GPS-denied environments pose significant challenges in localization, coordination, and payload stability. This paper introduces a vision-based Leader-Follower drone system using MAVROS and depth cameras for real-...

With aerial systems becoming more accessible, animal-drone interaction opportunities for improving wellness are expanding. Payload drones may provide new ways to encourage space utilization in zoo contexts, as well as minimize human interaction in ...

In this paper, the number of spots and cluster size of a high‐throughput satellite (HTS) is optimized by minimizing the satellite mass in the conceptual design phase. An innovative procedure for deriving the total mass of the payload and relevant ...

In this paper, the number of spots and cluster size of a high‐throughput satellite is optimized by minimizing the satellite mass in the conceptual design phase. A procedure for deriving total mass of the payload and relevant power supply subsystem as a ...

This paper proposes a methodology to benchmark satellite payload architectures and find the optimal trade‐offs between high flexibility and low complexity. High flexibility would enable the satellite to adapt to various distributions of user ...

This paper proposes a methodology to benchmark satellite payload architectures and find the optimal trade‐offs between flexibility and complexity. High flexibility would enable the satellite to adapt to various distributions of user terminals on the ...

Data security includes but not limited to, data encryption and key management practices that protect data across all applications and platforms. In this paper, we aim to explore whether any data leakage takes place in data encryption when encrypted data ...

Vehicular ad hoc networks (VANET) connects the vehicle and the infrastructure in solving various issues on the travel path. In this paper, a multi-hop routing protocol is established to transfer the information among vehicles when the infrastructure is ...

Reversible data hiding is art of concealing secret information such that cover media and secret information are both recovered without any information loss. In this paper high frequency sub-bands of integer wavelet transform are used for data embedding. ...

Sensor node communications are usually the most energy consuming among its activities. Therefore, reducing those communications necessarily preserves the node limited energy. One successful approach to this end is to reduce both the number of ...

Recently, new challenges are imposed to secure video broadcasting and sharing, and to guarantee confidentiality, integrity, copyright and traceability. In addition, due to the social media development, several new problems have emerged in users' privacy ...

Modern communications is an indispensable tool for modern social economy and modern social life. The payload of a communication satellite provides radio relay for links between earth stations. With most commercial communication satellites the payload ...

Intrusion detection systems are widely used security tools to detect cyber-attacks and malicious activities in computer systems and networks. Hypertext Transport Protocol (HTTP) is used for new applications without much interference. In this paper, we ...

In this fast growing digital world, the dramatic rise and progress of the internet have opened a path to connect a computer in the world to any other computer, no matter how far the two are located form each other. This is undoubtedly a great advantage ...

With the result of advancement in today's technology, digital content can be easily copied, modified, or distributed. Digital watermarking provides the solution to this problem. Most of the digital watermarking methods are divided into two categories: ...

In this paper, we proposed a new video forensic marking algorithm to hide special information of the content user in order to prevent the illegal distribution of the video content. The information which is hid to trace the illegal distribution of the ...

The resource planning and scheduling technology of payload is to arrange the works states of various payloads to carry out missions by optimizing the scheme of the resources. Based on the analysis of the satellite’s functions and the payload’s resource ...

The popularity of computer networks broadens the scope for network attackers and increases the damage these attacks can cause. In this context, Intrusion Detection Systems (IDS) are included as part of any complete security package. This work focuses on ...

This paper proposes an image authentication method that detects tamper and localizes tampered areas efficiently. The efficiency of the proposed method is summarized as the following three points. 1) This method offers coarse-to-fine tamper localization ...

Reversible watermarking is suitable for hiding data in 2-D vector maps because the distortions induced by data embedding can be removed after extracting the hidden bits. In this paper, two reversible data-hiding schemes are explored based on the idea of ...

A lossless data embedding method that inserts data in images in the spatial domain is proposed in this paper. Though a lossless data embedding method once distorts an original image to embed data into the image, the method restores the original image as ...

There are many factors contribute to the virus spread and infection. One of the big challenges in confronting computer viruses is to educate user. It needs a lot of effort to educate user about computer virus. The researchers have produced ECOVP which ...