Results 41 to 50 of about 1,502 (175)
ABSTRACT With the rapid proliferation of unmanned aerial vehicles (UAVs) in the military, logistics and public safety sectors, the threat of illegal intrusion, information theft, and security breaches has increased. This paper provides a comprehensive review of recent developments in counter‐unmanned aerial vehicle (counter‐UAV) systems, focussing on ...
Lei Xing, Can Cui, Miao Wang, Chao Xu
wiley +1 more source
A photomixing-based frequency-hopping spread spectrum (FHSS) system is effective for future secure terahertz (THz) wireless communications. Conventional photomixing systems are typically composed of two lasers, which result in an increased system size ...
Naoto Masutomi +7 more
doaj +1 more source
Optimal Designs of k‐Coincidence Wide‐Gap Frequency‐Hopping Sequence Sets
As a specific type of FHS, k$k$‐coincidence FHS sets enable their application in synchronous detection across numerous engineering fields due to their optimal self‐synchronization property. k‐coincidence uniform special FHS sets that possess wide‐gap and uniform properties contribute to enhancing the reliability and security of application systems ...
Changyuan Wang, Yi Zhang, Wan'an Yang
wiley +1 more source
This study investigates the near-field blast resistance of 316L stainless steel honeycomb sandwich structures (HSS) manufactured via selective laser melting (SLM), with a PVC foam-filled honeycomb sandwich structure (FHSS) designed for improved ...
Jingbo Huang +6 more
doaj +1 more source
Securing Machine‐Type Communications: A Survey on Privacy Threats and Countermeasures
Machine‐type communication (MTC) is a fundamental enabler of the Internet of Things (IoT) and emerging 5G/6G networks, supporting massive deployments of heterogeneous and resource‐constrained devices. However, large‐scale data collection, persistent connectivity, and limited device capabilities introduce critical privacy challenges that are not ...
Amirhosein Imani +2 more
wiley +1 more source
This is a Student Support portal for FHSS students. It is designed to bring together in one place answers to many of the questions raised by students.
Robert Drake
core +3 more sources
The Frequency-hopping Spread Spectrum (FHSS) systems and techniques are using in military and civilianradar recently and in the communication system for securing the information on wireless communications link channels, for example in the Wi-Fi 8.02.X ...
Saifuldeen A. Mohammed
doaj +1 more source
ABSTRACT With reference to Simmel's work, this article puts forward the notion of ‘stranger views’, which are expressive on the one hand, of the experiences of those who occupy a marginal position in society characterised by experiences of belonging and non‐belonging, and on the other, of our own position as researchers, probing spaces of non‐belonging
Simon Stewart, Marianela Barrios Aquino
wiley +1 more source
Uplink Transmission Policies for LoRa-Based Direct-to-Satellite IoT
Direct-to-Satellite IoT (DtS-IoT) is a promising approach to deliver data transfer services to IoT devices in remote areas where deploying terrestrial infrastructure is not appealing or feasible.
Guido Alvarez +4 more
doaj +1 more source
The algorithm of radioelectronic suppression of radiostations with frequency-hopping spread spectrum
The algorithm for suppressing tactical radiostations with frequency-hopping spread spectrum (FHSS) was developed. The effectiveness impact of polyharmonic unmodulated interference on the radiotransmission of a radio station with FHSS was estimated.
A. L. Matyushkov +2 more
doaj

