Essays about: "VHF"

Showing result 1 - 5 of 21 essays containing the word VHF.

1. 1. Demonstration of Digital Selective Call spoofing

   University essay from Linköpings universitet/Institutionen för datavetenskap

   Author : Axel Lindbäck; Yamha Javid; [2023]
   Keywords : Digital Selective Calling; Software Defined Radio; Spoofing; Cybersecurity; Maritime Communication Systems;

   Abstract : Digital Selective Calling (DSC) is a vital maritime communications and safety system, enabling ships in distress to alert nearby vessels and coast guard stations of their emergency. While DSC is suitable for calling, its technical format is substandard from a cybersecurity perspective. READ MORE

3. 2. Studies of the PMWE : Polar Mesosphere Winter Echoes

   University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Author : Simon Persson; [2022]
   Keywords : Polar; Mesosphere; Winter; Echoes; ESRAD; Infrasound; PMWE; PMSE; Summer; Radar; VHF; MST; MLT; SPE; HSS; Solar; Wind; evanescent; viscosity; FCA; 42;

   Abstract : This Master thesis examines a phenomenon that occurs in the upper polar atmosphere, namely, Polar Mesospheric Winter Echoes, or PMWEs. PMWEs are radar echoes observed by Very High Frequency Mesosphere Stratosphere Troposphere (VHF MST) radar, from altitudes of 60 to 76 km at 7 to 15 UT, in the winter months from the middle of September to the beginning of May. READ MORE

4. 3. Using Software-Defined Radio for ATN B1 : A look into CPDLC encoding and VDL Mode 2 transmission

   University essay from Linköpings universitet/Institutionen för datavetenskap; Linköpings universitet/Tekniska fakulteten

   Author : Vilhelm Melkstam; Anton Magnusson; [2022]
   Keywords : CPDLC; ATN B1; VDL Mode 2; Software-Defined Radio; Air Communication; Security;

   Abstract : An essential part of European air traffic control is the Aeronautical Telecommunications Network Baseline 1 (ATN B1) specification. This paper sheds some light on Controller–Pilot Data Link Communications (CPDLC) and VHF Data Link Mode 2 (VDL Mode 2), two crucial components of ATN B1. READ MORE

5. 4. Remotely Operated VoIP Radio for Drones

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Hosam Akeel; [2020]
   Keywords : ;

   Abstract : Nowadays, search and rescue organizations are considering using drones to aid in rescue missions. To ensure the drones work properly, we need to design a reliable and stable systems. One of these systems is the communication system, which creates a link between the drone and the operator. READ MORE

6. 5. Development of Ultra-Wide band 500 MHz – 20 GHz Heterogeneous Multi-Layered Phantom Comprises of Human Skin, Fat and Muscle Tissues for Various Microwaves Based Biomedical Application

   University essay from Uppsala universitet/Fasta tillståndets elektronik

   Author : Laya Joseph; [2019]
   Keywords : Anthropomorphic; Phantoms; dielectric properties; Ultra-wide-band; ATE phantoms; Vector Network Analyzer; Keysight technologies;

   Abstract : In biomedical applications realistic phantoms are becoming more useful for validation and testing of precursor systems. These artificial phantoms require stable and flexible tissue-mimicking materials with realistic dielectric properties in order to properly model human tissues. READ MORE